TRYPTOPHAN

US Previously Marketed

Details

Stereochemistry	ABSOLUTE
Molecular Formula	C11H12N2O2
Molecular Weight	204.2252
Optical Activity	UNSPECIFIED
Defined Stereocenters	1 / 1
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

N[C@@H](CC1=CNC2=C1C=CC=C2)C(O)=O

InChI

InChIKey=QIVBCDIJIAJPQS-VIFPVBQESA-N

InChI=1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)/t9-/m0/s1

HIDE SMILES / InChI

Molecular Formula	C11H12N2O2
Molecular Weight	204.2252
Charge	0
Count

Stereochemistry	ABSOLUTE
Additional Stereochemistry	No
Defined Stereocenters	1 / 1
E/Z Centers	0
Optical Activity	UNSPECIFIED

Description
Sources: https://www.drugbank.ca/drugs/DB00150
Curator's Comment: description was created based on several sources, including https://www.drugs.com/tryptophan.html

Tryptophan is alpha-aminoacid that is used in the biosynthesis of proteins. It is essential aminoacid in humans, meaning the body cannot synthesize and it must be obtained from the diet. Tryptophan is a precursor of serotonin, and as such is sold over the counter in many countries as a dietary supplement for use as an antidepressant, anxiolytic and sleep aid, however application of tryptophan in these indications is not approved by FDA.

CNS Activity

Originator

Approval Year

Targets

Primary Target	Pharmacology	Condition	Potency
Serotonergic synapse 2 Target ID: map04726 Sources: https://www.ncbi.nlm.nih.gov/pubmed/2271952	Substrate 661
Tryptophan metabolism 1 Target ID: map00380 Sources: https://www.ncbi.nlm.nih.gov/pubmed/2271952	Substrate 661

Conditions

Condition	Modality	Targets	Highest Phase	Product
Depression 240 Sources: http://www.mhra.gov.uk/home/groups/par/documents/websiteresources/con454366.pdf	Primary		Approved 8583	OPTIMAX Approved Use Optimax capsules are used only in combination with other anti-depressants when these anti-depressants have been used alone in a patient for a period of time but have not been sufficiently effective. Launch Date 2014
Anxiety 275 Sources: http://www.mhra.gov.uk/home/groups/par/documents/websiteresources/con454366.pdf	Primary		Approved 8583	OPTIMAX Approved Use Optimax 500 ing capsules contain L-tryptophan winch is found naturally in animal and plant proteins. L-tryptophan is considered an essential amino acid because our bodies can't make it. It is important for the development and functioning of many organs in the body. After absorbing L-tryptophan from food, our bodies convert it to 5-HTP (5-liydroxytryptophan) and then to serotonin which reduces feelings of anxiety and depression. Launch Date 2014

C_max

Value	Dose	Co-administered	Analyte	Population
717 μM EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/6210561/	100 mg/kg single, oral dose: 100 mg/kg route of administration: Oral experiment type: SINGLE co-administered:		TRYPTOPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

AUC

Value	Dose	Co-administered	Analyte	Population
2538 μM × h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/6210561/	100 mg/kg single, oral dose: 100 mg/kg route of administration: Oral experiment type: SINGLE co-administered:		TRYPTOPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

T_1/2

Value	Dose	Co-administered	Analyte	Population
2 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/6210561/	100 mg/kg single, oral dose: 100 mg/kg route of administration: Oral experiment type: SINGLE co-administered:		TRYPTOPHAN plasma	Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED

Doses

Dose	Population	Adverse events
10 g single, intravenous Highest studied dose Dose: 10 g Route: intravenous Route: single Dose: 10 g Sources: https://pubmed.ncbi.nlm.nih.gov/4541674	healthy, 18-40 years Health Status: healthy Age Group: 18-40 years Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/4541674	Sources: https://pubmed.ncbi.nlm.nih.gov/4541674
1800 mg 1 times / day multiple, oral Dose: 1800 mg, 1 times / day Route: oral Route: multiple Dose: 1800 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/2219890	healthy, 52 years Health Status: healthy Age Group: 52 years Sex: F Sources: https://pubmed.ncbi.nlm.nih.gov/2219890	Disc. AE: Eosinophilia myalgia syndrome... AEs leading to discontinuation/dose reduction: Eosinophilia myalgia syndrome (7 patients) Sources: https://pubmed.ncbi.nlm.nih.gov/2219890
1.5 g 2 times / day multiple, oral Dose: 1.5 g, 2 times / day Route: oral Route: multiple Dose: 1.5 g, 2 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/2314425	unhealthy, adult Health Status: unhealthy Age Group: adult Sources: https://pubmed.ncbi.nlm.nih.gov/2314425	Disc. AE: Eosinophilia myalgia syndrome... AEs leading to discontinuation/dose reduction: Eosinophilia myalgia syndrome Sources: https://pubmed.ncbi.nlm.nih.gov/2314425

AEs

AE	Significance	Dose	Population
Eosinophilia myalgia syndrome	7 patients Disc. AE	1800 mg 1 times / day multiple, oral Dose: 1800 mg, 1 times / day Route: oral Route: multiple Dose: 1800 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/2219890	healthy, 52 years Health Status: healthy Age Group: 52 years Sex: F Sources: https://pubmed.ncbi.nlm.nih.gov/2219890
Eosinophilia myalgia syndrome	Disc. AE	1.5 g 2 times / day multiple, oral Dose: 1.5 g, 2 times / day Route: oral Route: multiple Dose: 1.5 g, 2 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/2314425	unhealthy, adult Health Status: unhealthy Age Group: adult Sources: https://pubmed.ncbi.nlm.nih.gov/2314425

Sourcing

Vendor/Aggregator	ID	URL
3B Scientific (Wuhan) Corp	3B1-01564	http://www.3bsc.com/index/pro_info.php?id=21776
3B Scientific (Wuhan) Corp	3B3-048371	http://www.3bsc.com/index/pro_info.php?id=85809
AA Blocks	AA003R3R	http://www.aablocks.com/goods/Goods/detail?id=AA003R3R
Aaron Chemicals	AR003RVJ	http://www.aaronchem.com/73-22-3
abcr GmbH	AB119999	http://www.abcr.com/shop/en/AB119999
abcr GmbH	AB354899	http://www.abcr.com/shop/en/AB354899
AbMole Bioscience	M10213	http://www.abmole.com/products/l-tryptophan.html
Acadechem	ACDS-064120	http://www.acadechemical.com/product/138819
Acadechem	ACDS-070492	http://www.acadechemical.com/product/145191
Achemo Scientific Limited	AC-62341	http://www.achemo.com/search/?Keyword= 73-22-3
Achemtek	0101-001288	http://www.achemtek.com/73-22-3
Acorn PharmaTech	ACN-033629	http://www.acornpharmatech.com/
Acros Organics	AC140590010	https://www.fishersci.com/shop/products/l-tryptophan-99-acros-organics-2/AC140590010
Acros Organics	AC140590050	https://www.fishersci.com/shop/products/l-tryptophan-99-acros-organics-3/AC140590050
Acros Organics	AC140590250	https://www.fishersci.com/shop/products/l-tryptophan-99-acros-organics-3/AC140590250
Acros Organics	AC140591000	https://www.fishersci.com/shop/products/l-tryptophan-99-acros-organics-3/AC140591000
Acros Organics	AC140595000	https://www.fishersci.com/shop/products/l-tryptophan-99-acros-organics-3/AC140595000
AHH Chemical co.,ltd	MB-00567	http://www.ahhchemical.com/product/MB-00567.html
AHH Chemical co.,ltd	MT-53335	http://www.ahhchemical.com/product/MT-53335.html
AHH Chemical co.,ltd	NP-1203	http://www.ahhchemical.com/product/NP-1203.html
AK Scientific, Inc. (AKSCI)	HTS001390	http://www.aksci.com/item_detail.php?cat=HTS001390
Alfa Aesar	A10230	https://www.alfa.com/en/catalog/A10230/
Alfa Chemistry	73-22-3	https://www.alfachemic.com/catalysts/l-tryptophan-cas-73-22-3-item-293486.htm
Alfa Chemistry	AP73223-A	https://reagents.alfa-chemistry.com/product/l-tryptophan-cas-73-22-3-15687.html
Alfa Chemistry	AP73223-B	https://reagents.alfa-chemistry.com/product/l-tryptophan-cas-73-22-3-15688.html
Alichem	471002005	http://www.alichem.com/en/products/73-22-3.html
Angene	AGN-PC-0WADMD	http://www.angenechemical.com/productshow/AGN-PC-0WADMD.html
Anward	ANW-36308	http://www.anward.com/pro_result/24963
ApexBio Technology	A7403	http://www.apexbt.com/h-trp-oh.html
Avantor Inc	200006-766	https://us.vwr.com/store/product/7515186/l-tryptophan
Avantor Inc	200031-662	https://us.vwr.com/store/product/7515186/l-tryptophan
BLD Pharm	BD34769	http://www.bldpharm.com/products/73-22-3.html
BroadPharm	BP-13286	http://www.broadpharm.com/products/BP-13286/
Capot Chemical	10984	http://www.capotchem.com/en/10984.htm
Capot Chemical	PubChem10984	http://www.capotchem.com/en/10984.htm
Chem Scene	CS-W020011	http://www.chemscene.com/73-22-3.html
Chemenu	CM119384	http://www.chemenu.com/products/CM119384
ChemFaces	CFN90473	http://www.chemfaces.com/natural/Tryptophan-CFN90473.html
ChemMol	1201553	http://www.chemmol.com/chemmol/1201553.html
ChemMol	1202875	http://www.chemmol.com/chemmol/1202875.html
ChemMol	30105830	http://www.chemmol.com/chemmol/30105830.html
ChemMol	30201390	http://www.chemmol.com/chemmol/30201390.html
ChemMol	83603028	http://www.chemmol.com/chemmol/83603028.html
Chemspace	CSSB00011417517	https://chem-space.com/CSSB00011417517
China MainChem Co., Ltd	73-22-3	https://www.mainchem.com/product/l-tryptophan-cas-73-22-3/
CSNpharm	CSN23596	https://www.csnpharm.com/products/l-tryptophan.html
DC Chemicals	DCS-083	http://www.dcchemicals.com//product_show-L_Tryptophan.html
Debye Scientific	DB-029986	http://www.debyesci.com/DB-029986.html
Enamine	Z1245635763	https://www.enaminestore.com/catalog/Z1245635763
eNovation Chemicals	D383233	http://www.enovationchem.com/productDetails.asp?productID=D383233
FondChemical	FDB-1659	http://www.fondchemical.com/cpshow_cid_8_pid_847.html
Glentham Life Sciences	GM0674	http://www.glentham.com/products/product/GM0674/
Hairui	HR134419	http://www.hairuichem.com/en/product/54-12-6.html
Hairui	HR135739	http://www.hairuichem.com/en/product/73-22-3.html
Hefei Hirisun Pharmatech Co., Ltd	HR013068	http://www.hirisunpharm.com/153-94-6.html
iChemical	EBD2198136	http://www.ichemical.com/products/73-22-3.html?utm_source=PubChem&utm_medium=website&utm_campaign=product%20catalogs
Lab Network	LN00008613	https://labnetwork.com/frontend-app/p/#!/moleculedetails/LN00008613
LGC Standards	DRE-C17895020	https://www.lgcstandards.com/US/en/p/DRE-C17895020
LGC Standards	LGCFOR0172.00	https://www.lgcstandards.com/US/en/p/LGCFOR0172.00
LGC Standards	MM0172.00	https://www.lgcstandards.com/US/en/p/MM0172.00
Matrix Scientific	127509	https://www.matrixscientific.com/127509.html
mcule	MCULE-8004234494	https://mcule.com/MCULE-8004234494/
MedChem Express	HY-N0623	https://www.medchemexpress.com/L-Tryptophan.html
MuseChem	R048596	https://www.musechem.com/product/R048596.html
Oakwood	102089	http://www.oakwoodchemical.com/ProductsList.aspx?CategoryID=-2&txtSearch=170588&ExtHyperLink=1
Oakwood	M02943	http://www.oakwoodchemical.com/ProductsList.aspx?CategoryID=-2&txtSearch=127747&ExtHyperLink=1
OChem	2893	http://www.ocheminc.com/index.php?act=psearch&pid=73T223
Otava	1194815	https://search.otavachemicals.com/#!/search?query=1194815&type=code&base=dbb
Parchem	441	http://www.parchem.com/chemical-supplier-distributor/L-Tryptophan-001124.aspx
R&D Chemicals	5569	http://www.rdchemicals.com/chemicals.php?mode=details&mol_id=8318
Renno Tech	RP26086	http://www.rennotech.com/product_show.asp?id=31715
Sigma-Aldrich	1700501_USP	https://www.sigmaaldrich.com/catalog/product/usp/1700501?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sigma-Aldrich	51145_SIAL	https://www.sigmaaldrich.com/catalog/product/sial/51145?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sigma-Aldrich	93659_SIGMA	https://www.sigmaaldrich.com/catalog/product/sigma/93659?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sigma-Aldrich	T0254_SIAL	https://www.sigmaaldrich.com/catalog/product/sial/t0254?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sigma-Aldrich	T2610000_SIAL	https://www.sigmaaldrich.com/catalog/product/sial/t2610000?utm_source=pubchem&utm_campaign=pubchem_2017&utm_medium=referral
Sinfoo Biotech	S048463	http://www.sinfoobiotech.com/product/1051861
Sinfoo Biotech	S054835	http://www.sinfoobiotech.com/product/1058233
Synblock Inc	SB14997	http://www.synblock.com/product/73-22-3.html
TCI (Tokyo Chemical Industry)	T0541	http://www.tcichemicals.com/eshop/en/us/commodity/T0541/index.html
THE BioTek	bt-309360	https://www.thebiotek.com/product/others/bt-309360
THE BioTek	bt-334965	https://www.thebiotek.com/product/others/bt-334965
VladaChem	VL144982	https://www.vladachem.com/product.php?products=73-22-3
VladaChem	VL165717	https://www.vladachem.com/product.php?products=73-22-3
VladaChem	VL268496-100G	https://www.vladachem.com/product.php?products=73-22-3
Watanabe Chemical Ind.	G00034	https://www.watanabechem.co.jp/en/search/details.php?code=G00034
Yuhao Chemical	LT7526	http://www.chemyuhao.com/73-22-3.html

PubMed

Title	Date	PubMed
Influence of solvents and leucine configuration at position 5 on tryptophan fluorescence in cyclic enkephalin analogues.	2001-04-05	11180057
Reduced brain serotonin activity disrupts prepulse inhibition of the acoustic startle reflex. Effects of 5,7-dihydroxytryptamine and p-chlorophenylalanine.	2001-04	11182535
A nonsense mutation in the NDUFS4 gene encoding the 18 kDa (AQDQ) subunit of complex I abolishes assembly and activity of the complex in a patient with Leigh-like syndrome.	2001-03-01	11181577
Spectral and metal-binding properties of three single-point tryptophan mutants of the human transferrin N-lobe.	2001-03-01	11171122
Src homology 3 domain-dependent interaction of Nck-2 with insulin receptor substrate-1.	2001-03-01	11171109
Cooperative binding of inhaled anesthetics and ATP to firefly luciferase.	2001-03-01	11170198
Improvement of encapsulation efficiency of water-in-oil-in-water emulsion with hypertonic inner aqueous phase.	2001-02-24	11201337
Extracellular amino acid profiles in the paraventricular nucleus of the rat hypothalamus are influenced by diet composition.	2001-02-23	11172779
Trp 346 and Leu 352 residues in protective antigen are required for the expression of anthrax lethal toxin activity.	2001-02-16	11178978
Hypochlorous acid damages erythrocyte membrane proteins and alters lipid bilayer structure and fluidity.	2001-02-15	11182291
Tryptophan glycoconjugate as a novel marker of renal function.	2001-02-15	11182105
Kynurenine aminotransferase I activity in human placenta.	2001-02-15	11170833
Tryptophan 95, an amino acid residue of the Caprine arthritis encephalitis virus vif protein which is essential for virus replication.	2001-02-15	11162837
Engineered antibodies with increased activity to recruit complement.	2001-02-15	11160318
N-methyltryptophan oxidase from Escherichia coli: reaction kinetics with N-methyl amino acid and carbinolamine substrates.	2001-02-06	11170473
Characterization of the FAD-containing N-methyltryptophan oxidase from Escherichia coli.	2001-02-06	11170472
Phosphorescence and optically detected magnetic resonance of HIV-1 nucleocapsid protein complexes with stem-loop sequences of the genomic Psi-recognition element.	2001-02-06	11170468
Structural stabilization of [2Fe-2S] ferredoxin from Halobacterium salinarum.	2001-02-06	11170454
Orientations of Tyr 21 and Tyr 24 in the capsid of filamentous virus Ff determined by polarized Raman spectroscopy.	2001-02-06	11170449
Probing the kinetics of formation of the bacteriophage MS2 translational operator complex: identification of a protein conformer unable to bind RNA.	2001-02-02	11162119
Excessive activation of serotonin (5-HT) 1B receptors disrupts the formation of sensory maps in monoamine oxidase a and 5-ht transporter knock-out mice.	2001-02-01	11157075
IL-4 and IL-13 regulate the induction of indoleamine 2,3-dioxygenase activity and the control of Toxoplasma gondii replication in human fibroblasts activated with IFN-gamma.	2001-02	11180096
Anti-microbial activity and cell binding are controlled by sequence determinants in the anti-microbial peptide PR-39.	2001-02	11179998
Contribution of tryptophan residues to the CD spectrum of the extracellular domain of human tissue factor: application in folding studies and prediction of secondary structure.	2001-02	11179978
A comparison of kinetic and regulatory properties of the tetrameric and dimeric forms of wild-type and Thr427-->Pro mutant human phenylalanine hydroxylase: contribution of the flexible hinge region Asp425-Gln429 to the tetramerization and cooperative substrate binding.	2001-02	11179966
Pumping capacity of bacterial reaction centers and backpressure regulation of energy transduction.	2001-02	11179962
Mutagenesis of key residues identifies the connection subdomain of HIV-1 reverse transcriptase as the site of inhibition by heme.	2001-02	11179958
The mood-lowering effect of tryptophan depletion: possible explanation for discrepant findings.	2001-02	11177123
Interaction of L-tryptophan with alpha-cyclodextrin: studies with calorimetry and proton nuclear magnetic resonance spectroscopy.	2001-02	11169530
Increased antibacterial activity of 15-residue murine lactoferricin derivatives.	2001-02	11168896
Interaction of pleurocidin and its analogs with phospholipid membrane and their antibacterial activity.	2001-02	11168895
Mechanism of porcine pancreatic alpha-amylase. Inhibition of amylose and maltopentaose hydrolysis by alpha-, beta- and gamma-cyclodextrins.	2001-02	11168426
Active site characterization of the single endo-polygalacturonase produced by Fusarium moniliforme NCIM 1276.	2001-02	11168425
Effects of pressure on the activity and spectroscopic properties of carboxyl proteinases. Apparent correlation of pepstatin-insensitivity and pressure response.	2001-02	11168403
Effect of hypothyroidism on pathways for iodothyronine and tryptophan uptake into rat adipocytes.	2001-02	11158928
Molecular engineering of myoglobin: the improvement of oxidation activity by replacing Phe-43 with tryptophan.	2001-01-30	11170427
Paramecium calmodulin mutants defective in ion channel regulation associate with melittin in the absence of calcium but require it for tertiary collapse.	2001-01-30	11170410
Oxidation of human lens recombinant alphaA-crystallin and cysteine-deficient mutants.	2001-01-26	11162107
Crystal structures of pristine and oxidatively processed lignin peroxidase expressed in Escherichia coli and of the W171F variant that eliminates the redox active tryptophan 171. Implications for the reaction mechanism.	2001-01-26	11162097
A differential scanning calorimetric and 31P NMR spectroscopic study of the effect of transmembrane alpha-helical peptides on the lamellar-reversed hexagonal phase transition of phosphatidylethanolamine model membranes.	2001-01-23	11170393
Solution conformation of EcoRI restriction endonuclease changes upon binding of cognate DNA and Mg2+ cofactor.	2001-01-23	11170385
Molecular mechanism of stop codon recognition by eRF1: a wobble hypothesis for peptide anticodons.	2001-01-19	11163755
Amino acid phosphoramidate monoesters of 3'-azido-3'-deoxythymidine: relationship between antiviral potency and intracellular metabolism.	2001-01-18	11170632
Acute tryptophan depletion in schizophrenia.	2001-01	11200962
Autofluorescence characteristics of immortalized and carcinogen-transformed human bronchial epithelial cells.	2001-01	11178578
Regional changes in kynurenic acid, quinolinic acid, and glial fibrillary acidic protein concentrations in the fetal sheep brain after experimentally induced placental insufficiency.	2001-01	11174503
Near-infrared reflectance spectroscopy enables the fast and accurate prediction of the essential amino acid contents in soy, rapeseed meal, sunflower meal, peas, fishmeal, meat meal products, and poultry meal.	2001-01	11170560
Tryptophan fluorescence of yeast actin resolved via conserved mutations.	2001-01	11159413
Depressive symptoms in hypothyroid disorder with some observations on biochemical correlates.	2001	11174048
Mechanisms of biosynthesis of protein-derived redox cofactors.	2001	11153267

Patents

Sample Use Guides

In Vivo Use Guide

As a dietary supplement, tryptophan is administered orally with tryptophan-reach food (turkey, eggs, beans) or as dietary supplements in the form of tablets.

Route of Administration: Oral

In Vitro Use Guide

Tryptophan hydroxylase activity was assayed in a low-speed supernatant fraction of cerebral cortex or midbrain from a single rat. The enzyme preparation contained 2 mM dithiothreitol and had been subjected to gel filtration to remove small molecules. The assay was carried out in the presence of 200 uM L-tryptophan and 50 gM DL-6-methyl-5,6,7,8-tetrahydropterin.

Substance Class	Chemical Created by `admin` on `Mon Mar 31 18:17:42 GMT 2025` Edited by `admin` on `Mon Mar 31 18:17:42 GMT 2025`
Record UNII	8DUH1N11BX
Record Status	`Validated (UNII)`
Record Version

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Name

Type

Language

L-TRYPTOPHAN

Preferred Name

English

TRYPTOPHAN

Official Name

English

Tryptophan [WHO-DD]

Common Name

English

TRYPTOPHAN [HSDB]

Common Name

English

L-TRYPTOPHAN [VANDF]

Common Name

English

NSC-13119

Code

English

TRYPTOPHAN [EP MONOGRAPH]

Common Name

English

TRYTOPHAN-

Common Name

English

TRYPTOPHAN [II]

Common Name

English

TRYPTOPHAN [VANDF]

Common Name

English

N-ACETYLTRYPTOPHAN IMPURITY A [EP IMPURITY]

Common Name

English

TRYPTOPHAN [MART.]

Common Name

English

L-TRYPTOPHAN [USP-RS]

Common Name

English

tryptophan [INN]

Common Name

English

TRYPTOPHAN, L-

Systematic Name

English

L-TRYPTOPHAN [FCC]

Common Name

English

TRYPTOPHAN ((-),L,S)

Common Name

English

1H-INDOLE-3-PROPANOIC ACID, .ALPHA.-AMINO-, (S)-

Systematic Name

English

(-)-TRYPTOPHAN

Common Name

English

TRYPTOPHAN [USAN]

Common Name

English

L-TRYPTOPHAN [JAN]

Common Name

English

TRYPTOPHAN [USP MONOGRAPH]

Common Name

English

L-.ALPHA.-AMINO-3-INDOLEPROPIONIC ACID

Common Name

English

TRYPTOPHAN [MI]

Common Name

English

Classification Tree Code System Code

LOINC

25546-3