D&C RED NO. 33 FREE ACID

Possibly Marketed Outside US

First approved in 1950

Details

Stereochemistry	ACHIRAL
Molecular Formula	C16H13N3O7S2
Molecular Weight	423.42
Optical Activity	NONE
Defined Stereocenters	0 / 0
E/Z Centers	1
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

NC1=CC(=CC2=C1C(O)=C(\N=N\C3=CC=CC=C3)C(=C2)S(O)(=O)=O)S(O)(=O)=O

InChI

InChIKey=UDCKXEFJOHLCKM-VHEBQXMUSA-N

InChI=1S/C16H13N3O7S2/c17-12-8-11(27(21,22)23)6-9-7-13(28(24,25)26)15(16(20)14(9)12)19-18-10-4-2-1-3-5-10/h1-8,20H,17H2,(H,21,22,23)(H,24,25,26)/b19-18+

HIDE SMILES / InChI

Molecular Formula	C16H13N3O7S2
Molecular Weight	423.42
Charge	0
Count

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	1
Optical Activity	NONE

Description
Sources: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=dfe6a47c-ec31-4421-877e-f953e4c99889

D&C RED NO. 33, a red dye, is used as a colorant in cosmetic product. It’s also an inactive ingredient of JOHNSONS BATH DISCOVERY BABY GIFT SET, which is used to prevent diaper rash.

Approval Year

Conditions

Condition	Modality	Targets	Highest Phase	Product
Diaper rash 8 Sources: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=dfe6a47c-ec31-4421-877e-f953e4c99889	Inactive ingredient		Approved 8583	JOHNSONS BATH DISCOVERY BABY GIFT SET Approved Use JOHNSONS BATH DISCOVERY BABY GIFT SET is used to treat and prevent diaper rash. It protects chafed skin due to diaper rash and helps seal out wetness.

Substance Class	Chemical Created by `admin` on `Mon Mar 31 22:31:09 GMT 2025` Edited by `admin` on `Mon Mar 31 22:31:09 GMT 2025`
Record UNII	942D1H6FKF
Record Status	`Validated (UNII)`
Record Version

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Name

Type

Language

D&C RED NO. 33 FREE ACID

Common Name

English

1-NAPHTHOL-3,6-DISULFONIC ACID, 8-AMINO-2-PHENYLAZO-

Preferred Name

English

2,7-NAPHTHALENEDISULFONIC ACID, 5-AMINO-4-HYDROXY-3-(PHENYLAZO)-

Systematic Name

English

2,7-NAPHTHALENEDISULFONIC ACID, 5-AMINO-4-HYDROXY-3-(2-PHENYLDIAZENYL)-

Systematic Name

English

Code System Code Type Description

FDA UNII

942D1H6FKF