Details
Stereochemistry | ABSOLUTE |
Molecular Formula | C16H21NO2 |
Molecular Weight | 259.3434 |
Optical Activity | ( - ) |
Defined Stereocenters | 1 / 1 |
E/Z Centers | 0 |
Charge | 0 |
SHOW SMILES / InChI
SMILES
CCC(=O)NCC[C@@H]1CCC2=CC=C3OCCC3=C12
InChI
InChIKey=YLXDSYKOBKBWJQ-LBPRGKRZSA-N
InChI=1S/C16H21NO2/c1-2-15(18)17-9-7-12-4-3-11-5-6-14-13(16(11)12)8-10-19-14/h5-6,12H,2-4,7-10H2,1H3,(H,17,18)/t12-/m0/s1
Molecular Formula | C16H21NO2 |
Molecular Weight | 259.3434 |
Charge | 0 |
Count |
|
Stereochemistry | ABSOLUTE |
Additional Stereochemistry | No |
Defined Stereocenters | 1 / 1 |
E/Z Centers | 0 |
Optical Activity | UNSPECIFIED |
DescriptionCurator's Comment: description was created based on several sources, including
https://www.takeda.com/news/2011/20111007_3902.html
Curator's Comment: description was created based on several sources, including
https://www.takeda.com/news/2011/20111007_3902.html
Ramelteon was approved by the United States (U.S.) in July 2005, and the Japanese Ministry of Health, Labour and Welfare in April 2010. It is currently available in the USA and Japan as ROZEREM and is indicated for the treatment of insomnia characterized by difficulty with sleep onset. In October 7, 2011, Takeda has decided to discontinue the development of ramelteon in Europe for the treatment of insomnia in order to best optimize Takeda’s resources for its research and development activities. Ramelteon is a melatonin receptor agonist with both high affinity for melatonin MT1 and MT2 receptors and selectivity over the MT3 receptor. Ramelteon demonstrates full agonist activity in vitro in cells expressing human MT1 or MT2 receptors, and high selectivity for human MT1 and MT2 receptors compared to the MT3 receptor. The activity of ramelteon at the MT1 and MT2 receptors is believed to contribute to its sleep-promoting properties since these receptors are acted upon by endogenous melatonin and are thought to be involved in the maintenance of the circadian rhythm underlying normal sleep-wake cycles. Ramelteon has no appreciable affinity for the GABA receptor complex or for receptors that bind neuropeptides, cytokines, serotonin, dopamine, noradrenaline, acetylcholine, and opiates.
Originator
Sources: https://www.takeda.com/news/2011/20111007_3902.html
Curator's Comment: # Takeda
Approval Year
Targets
Primary Target | Pharmacology | Condition | Potency |
---|---|---|---|
Target ID: CHEMBL2094268 Sources: https://www.ncbi.nlm.nih.gov/pubmed/15494157 |
Conditions
Condition | Modality | Targets | Highest Phase | Product |
---|---|---|---|---|
Primary | ROZEREM Approved UseROZEREM is indicated for the treatment of insomnia characterized by difficulty with sleep onset. The clinical trials performed in support of efficacy were up to 6 months in duration. The final formal assessments of sleep latency were performed after 2 days of treatment during the crossover study (elderly only), at 5 weeks in the 6-week studies (adults and elderly), and at the end of the 6-month study (adults and elderly) [see Clinical Studies (14) Launch Date2005 |
Cmax
Value | Dose | Co-administered | Analyte | Population |
---|---|---|---|---|
25.9 ng/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/16432265 |
64 mg single, oral dose: 64 mg route of administration: Oral experiment type: SINGLE co-administered: |
RAMELTEON serum | Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED |
AUC
Value | Dose | Co-administered | Analyte | Population |
---|---|---|---|---|
36.1 ng × h/mL EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/16432265 |
64 mg single, oral dose: 64 mg route of administration: Oral experiment type: SINGLE co-administered: |
RAMELTEON serum | Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED |
T1/2
Value | Dose | Co-administered | Analyte | Population |
---|---|---|---|---|
1.9 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/16432265 |
64 mg single, oral dose: 64 mg route of administration: Oral experiment type: SINGLE co-administered: |
RAMELTEON serum | Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED |
Funbound
Value | Dose | Co-administered | Analyte | Population |
---|---|---|---|---|
30% EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/16432265 |
64 mg single, oral dose: 64 mg route of administration: Oral experiment type: SINGLE co-administered: |
RAMELTEON serum | Homo sapiens population: HEALTHY age: ADULT sex: FEMALE / MALE food status: FASTED |
Doses
Dose | Population | Adverse events |
---|---|---|
32 mg 1 times / day multiple, oral Highest studied dose Dose: 32 mg, 1 times / day Route: oral Route: multiple Dose: 32 mg, 1 times / day Sources: |
unhealthy, 42.8 years n = 63 Health Status: unhealthy Condition: chronic primary insomnia Age Group: 42.8 years Sex: M+F Population Size: 63 Sources: |
Other AEs: Somnolence, Malaise... Other AEs: Somnolence (12.7%) Sources: Malaise (1.6%) Dizziness (3.2%) Nasopharyngitis (4.8%) |
40 mg 1 times / day multiple, oral Overdose Dose: 40 mg, 1 times / day Route: oral Route: multiple Dose: 40 mg, 1 times / day Sources: |
unhealthy, 47 years n = 1 Health Status: unhealthy Condition: insomnia Age Group: 47 years Sex: F Population Size: 1 Sources: |
|
8 mg 1 times / day steady, oral Recommended Dose: 8 mg, 1 times / day Route: oral Route: steady Dose: 8 mg, 1 times / day Sources: |
unhealthy, adult n = 3594 Health Status: unhealthy Condition: insomnia Age Group: adult Population Size: 3594 Sources: |
Disc. AE: Somnolence, Dizziness... AEs leading to discontinuation/dose reduction: Somnolence (0.8%) Sources: Dizziness (0.5%) Nausea (0.3%) Fatigue (0.3%) Headache (0.3%) Insomnia (0.3%) |
160 mg single, oral Highest studied dose Dose: 160 mg Route: oral Route: single Dose: 160 mg Sources: |
unknown Health Status: unknown Sources: |
AEs
AE | Significance | Dose | Population |
---|---|---|---|
Malaise | 1.6% | 32 mg 1 times / day multiple, oral Highest studied dose Dose: 32 mg, 1 times / day Route: oral Route: multiple Dose: 32 mg, 1 times / day Sources: |
unhealthy, 42.8 years n = 63 Health Status: unhealthy Condition: chronic primary insomnia Age Group: 42.8 years Sex: M+F Population Size: 63 Sources: |
Somnolence | 12.7% | 32 mg 1 times / day multiple, oral Highest studied dose Dose: 32 mg, 1 times / day Route: oral Route: multiple Dose: 32 mg, 1 times / day Sources: |
unhealthy, 42.8 years n = 63 Health Status: unhealthy Condition: chronic primary insomnia Age Group: 42.8 years Sex: M+F Population Size: 63 Sources: |
Dizziness | 3.2% | 32 mg 1 times / day multiple, oral Highest studied dose Dose: 32 mg, 1 times / day Route: oral Route: multiple Dose: 32 mg, 1 times / day Sources: |
unhealthy, 42.8 years n = 63 Health Status: unhealthy Condition: chronic primary insomnia Age Group: 42.8 years Sex: M+F Population Size: 63 Sources: |
Nasopharyngitis | 4.8% | 32 mg 1 times / day multiple, oral Highest studied dose Dose: 32 mg, 1 times / day Route: oral Route: multiple Dose: 32 mg, 1 times / day Sources: |
unhealthy, 42.8 years n = 63 Health Status: unhealthy Condition: chronic primary insomnia Age Group: 42.8 years Sex: M+F Population Size: 63 Sources: |
Fatigue | 0.3% Disc. AE |
8 mg 1 times / day steady, oral Recommended Dose: 8 mg, 1 times / day Route: oral Route: steady Dose: 8 mg, 1 times / day Sources: |
unhealthy, adult n = 3594 Health Status: unhealthy Condition: insomnia Age Group: adult Population Size: 3594 Sources: |
Headache | 0.3% Disc. AE |
8 mg 1 times / day steady, oral Recommended Dose: 8 mg, 1 times / day Route: oral Route: steady Dose: 8 mg, 1 times / day Sources: |
unhealthy, adult n = 3594 Health Status: unhealthy Condition: insomnia Age Group: adult Population Size: 3594 Sources: |
Insomnia | 0.3% Disc. AE |
8 mg 1 times / day steady, oral Recommended Dose: 8 mg, 1 times / day Route: oral Route: steady Dose: 8 mg, 1 times / day Sources: |
unhealthy, adult n = 3594 Health Status: unhealthy Condition: insomnia Age Group: adult Population Size: 3594 Sources: |
Nausea | 0.3% Disc. AE |
8 mg 1 times / day steady, oral Recommended Dose: 8 mg, 1 times / day Route: oral Route: steady Dose: 8 mg, 1 times / day Sources: |
unhealthy, adult n = 3594 Health Status: unhealthy Condition: insomnia Age Group: adult Population Size: 3594 Sources: |
Dizziness | 0.5% Disc. AE |
8 mg 1 times / day steady, oral Recommended Dose: 8 mg, 1 times / day Route: oral Route: steady Dose: 8 mg, 1 times / day Sources: |
unhealthy, adult n = 3594 Health Status: unhealthy Condition: insomnia Age Group: adult Population Size: 3594 Sources: |
Somnolence | 0.8% Disc. AE |
8 mg 1 times / day steady, oral Recommended Dose: 8 mg, 1 times / day Route: oral Route: steady Dose: 8 mg, 1 times / day Sources: |
unhealthy, adult n = 3594 Health Status: unhealthy Condition: insomnia Age Group: adult Population Size: 3594 Sources: |
Overview
CYP3A4 | CYP2C9 | CYP2D6 | hERG |
---|---|---|---|
OverviewOther
Other Inhibitor | Other Substrate | Other Inducer |
---|---|---|
Drug as perpetrator
Drug as victim
Target | Modality | Activity | Metabolite | Clinical evidence |
---|---|---|---|---|
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 60.0 |
inconclusive | |||
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 11, 13 |
major | yes (co-administration study) Comment: fluvoxamine increased ramelteon AUC 190-fold and Cmax 70-fold; rifampin decreased total expsoure to ramelteon by 80% Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 11, 13 |
||
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 11, 13 |
minor | yes (co-administration study) Comment: rifampin decreased total expsoure to ramelteon by 80% Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 11, 13 |
||
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 11, 13 |
minor | yes (co-administration study) Comment: ketaconazole increased ramelteon AUC by 84% and Cmax 36%; rifampin decreased total expsoure to ramelteon by 80% Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 11, 13 |
||
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 13.0 |
yes | yes (co-administration study) Comment: fluconazole increased AUC by 150% and Cmax by 150%; rifampin decreased total expsoure to ramelteon by 80% Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_biopharmr.pdf Page: 13.0 |
Tox targets
Target | Modality | Activity | Metabolite | Clinical evidence |
---|---|---|---|---|
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2005/021782s000_Rozerem_pharmr_CORRECTED_REVIEW.pdf Page: 53, 66 |
PubMed
Title | Date | PubMed |
---|---|---|
Gateways to clinical trials. | 2003 Nov |
|
Gateways to clinical trials. | 2004 Dec |
|
Gateways to clinical trials. | 2004 Jul-Aug |
|
Gateways to clinical trials. | 2004 Nov |
|
Melatonin, sleep, and circadian rhythms: rationale for development of specific melatonin agonists. | 2004 Nov |
|
The sleep-promoting action of ramelteon (TAK-375) in freely moving cats. | 2004 Nov 1 |
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Effects of ramelteon (TAK-375) on nocturnal sleep in freely moving monkeys. | 2004 Nov 19 |
|
Relative abuse liability of hypnotic drugs: a conceptual framework and algorithm for differentiating among compounds. | 2005 |
|
Sleep and aging: prevalence of disturbed sleep and treatment considerations in older adults. | 2005 |
|
Ramelteon. | 2005 |
|
Ramelteon: TAK 375. | 2005 |
|
Gateways to clinical trials. | 2005 Apr |
|
Melatonin and sleep in aging population. | 2005 Dec |
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Neurochemical properties of ramelteon (TAK-375), a selective MT1/MT2 receptor agonist. | 2005 Feb |
|
Ramelteon (TAK-375) accelerates reentrainment of circadian rhythm after a phase advance of the light-dark cycle in rats. | 2005 Feb |
|
TAK-375 Takeda. | 2005 Jan |
|
Recent advances in melatonin receptor ligands. | 2005 Jun |
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Ramelteon (TAK-375), a selective MT1/MT2-receptor agonist, reduces latency to persistent sleep in a model of transient insomnia related to a novel sleep environment. | 2005 Mar |
|
Fresh from the pipeline: Ramelteon. | 2005 Nov |
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Ramelteon (Rozerem) for insomnia. | 2005 Nov 7 |
|
Gateways to clinical trials. | 2005 Oct |
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New drugs and dosage forms. | 2005 Sep 15 |
|
Use of sleep-promoting medications in nursing home residents : risks versus benefits. | 2006 |
|
New drugs 06, part II. | 2006 Aug |
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Pharmacologic management of insomnia: past, present, and future. | 2006 Dec |
|
Treating insomnia: Current and investigational pharmacological approaches. | 2006 Dec |
|
A look back at the most influential drug approvals of 2005. | 2006 Feb |
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Disposition kinetics and tolerance of escalating single doses of ramelteon, a high-affinity MT1 and MT2 melatonin receptor agonist indicated for treatment of insomnia. | 2006 Feb |
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An efficacy, safety, and dose-response study of Ramelteon in patients with chronic primary insomnia. | 2006 Jan |
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Searching for new options for treating insomnia: are melatonin and ramelteon beneficial? | 2006 Jul |
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Ramelteon: a novel treatment for the treatment of insomnia. | 2006 Jul |
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Effect of ramelteon (TAK-375), a selective MT1/MT2 receptor agonist, on motor performance in mice. | 2006 Jul 24 |
|
Gateways to clinical trials. | 2006 Jul-Aug |
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Management of chronic insomnia in elderly persons. | 2006 Jun |
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Acute and chronic effects of ramelteon in rhesus monkeys (Macaca mulatta): dependence liability studies. | 2006 Jun |
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Ramelteon for the treatment of insomnia. | 2006 Oct |
|
[Melatonin, melatonin receptor agonists and tryptophan as sleep aids]. | 2007 |
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Age and gender effects on the pharmacokinetics and pharmacodynamics of ramelteon, a hypnotic agent acting via melatonin receptors MT1 and MT2. | 2007 Apr |
|
Putting "sleepdriving" and new safety warning in perspective. | 2007 Aug |
|
Evaluation of the efficacy and safety of ramelteon in subjects with chronic insomnia. | 2007 Aug 15 |
|
Greater incidence of depression with hypnotic use than with placebo. | 2007 Aug 21 |
|
New perspectives for the treatment of disorders of sleep and arousal. | 2007 Jul |
|
A 2-night, 3-period, crossover study of ramelteon's efficacy and safety in older adults with chronic insomnia. | 2007 May |
|
[Drugs for insomnia and improving quality of life (QOL): research and development of ramelteon, an MT1/MT2-receptor agonist]. | 2008 Jan |
|
Jet lag: therapeutic use of melatonin and possible application of melatonin analogs. | 2008 Jan-Mar |
|
Ramelteon: a melatonin receptor agonist for the treatment of insomnia. | 2008 Jan-Mar |
|
Melatonin and its agonists: an update. | 2008 Oct |
|
The effects of ramelteon in a first-night model of transient insomnia. | 2009 Jan |
|
The effects of ramelteon on respiration during sleep in subjects with moderate to severe chronic obstructive pulmonary disease. | 2009 Mar |
Patents
Sample Use Guides
The recommended dose 8 mg taken within 30 minutes of going to bed. It is recommended that drug not be taken with or immediately after a high fat meal.
Route of Administration:
Oral
In Vitro Use Guide
Sources: https://www.ncbi.nlm.nih.gov/pubmed/15695169
Curator's Comment: Ramelteon inhibited forskolin-stimulated cAMP production in the CHO cells that express the human MT1 or MT2 receptors.
Unknown
Substance Class |
Chemical
Created
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on
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on
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Record UNII |
901AS54I69
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N05CH02
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NBK548437
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N0000175743
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NCI_THESAURUS |
C47795
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Ramelteon
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RAMELTEON
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Related Record | Type | Details | ||
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METABOLIC ENZYME -> SUBSTRATE |
MINOR
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METABOLIC ENZYME -> SUBSTRATE |
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EXCRETED UNCHANGED |
FECAL; URINE
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METABOLIC ENZYME -> SUBSTRATE |
MINOR
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TARGET -> AGONIST |
AGONIST
Ki
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METABOLIC ENZYME -> SUBSTRATE |
MAJOR
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TARGET -> AGONIST |
HUMAN RECEPTOR IN CHO CELLS
Ki
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BINDER->LIGAND |
independent of concentration
BINDING
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Related Record | Type | Details | ||
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METABOLITE INACTIVE -> PARENT | |||
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METABOLITE INACTIVE -> PARENT | |||
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METABOLITE ACTIVE -> PARENT |
metabolite M-II, has a longer half-life and greater systemic exposure than ramelteon. Hence, M-II may contribute significantly to the hypnotic benefits of ramelteon. S-ISOMER represents 94% of M-II.
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METABOLITE -> PARENT | |||
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METABOLITE -> PARENT | |||
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METABOLITE INACTIVE -> PARENT | |||
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METABOLITE ACTIVE -> PARENT |
major isozyme metabolizes to S-isomer
MAJOR
PLASMA
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METABOLITE -> PARENT | |||
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METABOLITE ACTIVE -> PARENT |
minor isozyme
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Related Record | Type | Details | ||
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IMPURITY -> PARENT |
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IMPURITY -> PARENT |
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IMPURITY -> PARENT | |||
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IMPURITY -> PARENT |
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IMPURITY -> PARENT | |||
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IMPURITY -> PARENT | |||
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IMPURITY -> PARENT |
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IMPURITY -> PARENT |
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IMPURITY -> PARENT |
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IMPURITY -> PARENT |
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ACTIVE MOIETY |
Name | Property Type | Amount | Referenced Substance | Defining | Parameters | References |
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Biological Half-life | PHARMACOKINETIC |
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Elimination PHARMACOKINETIC |
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Tmax | PHARMACOKINETIC |
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FASTED ORAL ADMINISTRATION |
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ORAL BIOAVAILABILITY | PHARMACOKINETIC |
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Volume of Distribution | PHARMACOKINETIC |
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