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Details

Stereochemistry ACHIRAL
Molecular Formula C16H12N4O9S2
Molecular Weight 468.418
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 1
Charge 0

SHOW SMILES / InChI
Structure of FD&C YELLOW NO. 5 FREE ACID

SMILES

OC(=O)C1=NN(C(O)=C1\N=N\C2=CC=C(C=C2)S(O)(=O)=O)C3=CC=C(C=C3)S(O)(=O)=O

InChI

InChIKey=KPIQXPLWZCDIHI-ISLYRVAYSA-N
InChI=1S/C16H12N4O9S2/c21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29/h1-8,21H,(H,22,23)(H,24,25,26)(H,27,28,29)/b18-17+

HIDE SMILES / InChI

Molecular Formula C16H12N4O9S2
Molecular Weight 468.418
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 1
Optical Activity NONE

FD&C Yellow No. 5 (Tartrazine, Colour Index No. 19140) is a color additive permitted in the United States for coloring foods (including dietary supplements), ingested and externally applied drugs, and cosmetics. It is a nitrous derivative and is known to cause allergic reactions such as asthma and urticaria, as well as having been the focus of studies on mutagenesis and carcinogenesis due to its transformation into aromatic amine sulfanilic acid after being metabolized by the gastrointestinal microflora.

Approval Year

Substance Class Chemical
Created
by admin
on Sat Dec 16 01:43:36 UTC 2023
Edited
by admin
on Sat Dec 16 01:43:36 UTC 2023
Record UNII
6TP696149N
Record Status Validated (UNII)
Record Version
  • Download
Name Type Language
FD&C YELLOW NO. 5 FREE ACID
Common Name English
C.I. ACID YELLOW 23 (FREE ACID)
Common Name English
1H-PYRAZOLE-3-CARBOXYLIC ACID, 4,5-DIHYDRO-5-OXO-1-(4-SULFOPHENYL)-4-(2-(4-SULFOPHENYL)DIAZENYL)-
Systematic Name English
ACID YELLOW 23 FREE ACID
Common Name English
5-HYDROXY-1-(4-SULFOPHENYL)-4-(4-SULFOPHENYLAZO)PYRAZOLE-3-CARBOXYLIC ACID
Systematic Name English
Code System Code Type Description
EPA CompTox
DTXSID8047212
Created by admin on Sat Dec 16 01:43:36 UTC 2023 , Edited by admin on Sat Dec 16 01:43:36 UTC 2023
PRIMARY
RXCUI
1926832
Created by admin on Sat Dec 16 01:43:36 UTC 2023 , Edited by admin on Sat Dec 16 01:43:36 UTC 2023
PRIMARY
DAILYMED
6TP696149N
Created by admin on Sat Dec 16 01:43:36 UTC 2023 , Edited by admin on Sat Dec 16 01:43:36 UTC 2023
PRIMARY
CAS
1017018-26-6
Created by admin on Sat Dec 16 01:43:36 UTC 2023 , Edited by admin on Sat Dec 16 01:43:36 UTC 2023
ALTERNATIVE
CAS
34175-08-1
Created by admin on Sat Dec 16 01:43:36 UTC 2023 , Edited by admin on Sat Dec 16 01:43:36 UTC 2023
PRIMARY
ECHA (EC/EINECS)
251-862-1
Created by admin on Sat Dec 16 01:43:36 UTC 2023 , Edited by admin on Sat Dec 16 01:43:36 UTC 2023
PRIMARY
FDA UNII
6TP696149N
Created by admin on Sat Dec 16 01:43:36 UTC 2023 , Edited by admin on Sat Dec 16 01:43:36 UTC 2023
PRIMARY
Related Record Type Details
SALT/SOLVATE -> PARENT