General Information

Synonyms: CI FOOD RED 12, D AND C RED No. 33, FAST ACID FUCHSINE B, FAST ACID MAGENTA B, NAPHTALENE RED B
Chemical Names: DISODIUM SALT OF 5-AMINO-4-HYDROXY-3-(PHENYLAZO)-2,7-NAPHTHALENEDISULFONIC ACID
CAS number: 3567-66-6
Functional Class: Food Additives
COLOUR

From apps.who.int


Evaluations

Evaluation year: 1964
Meeting: 28
Specs Code: W
Report: NMRS 38/TRS 309-JECFA 8/23
Specification: WITHDRAWN (1984)

From apps.who.int


Computed Descriptors

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2D Structure
CID5359892
IUPAC Namedisodium;(3Z)-5-amino-4-oxo-3-(phenylhydrazinylidene)naphthalene-2,7-disulfonate
InChIInChI=1S/C16H13N3O7S2.2Na/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;;/h1-8,18H,17H2,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b19-15+;;
InChI KeyHZYOIDDAGQUYLF-WTBAQZMLSA-L
Canonical SMILESC1=CC=C(C=C1)NN=C2C(=CC3=CC(=CC(=C3C2=O)N)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
Molecular FormulaC16H11N3Na2O7S2
WikipediaD&C Red 33

From Pubchem


Computed Properties

Property Name Property Value
Molecular Weight467.378
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count10
Rotatable Bond Count2
Complexity867.0
CACTVS Substructure Key Fingerprint A A A D c c B 7 O D B g A A A A A A A A A A A A A A A A A A A A A A A w Y I A A A A A A A A C B Q A A A H g Q Y A A A A D A y B 2 A A w w Y B i A A K o A 6 R y Q H D S B E A k A g A Y i B k g Z N g I I D q A l Z G A I Y R g m A A I y U c Y i I C O k A A A w C A S A A A g A A G A Q C Q A A A A A A A A A A A = =
Topological Polar Surface Area199.0
Monoisotopic Mass466.983
Exact Mass466.983
Compound Is CanonicalizedTrue
Formal Charge0
Heavy Atom Count30
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count1
Undefined Bond Stereocenter Count0
Isotope Atom Count0
Covalently-Bonded Unit Count3

From Pubchem


Taxonomic Classification

KingdomOrganic compounds
SuperclassBenzenoids
ClassNaphthalenes
SubclassNot available
Intermediate Tree NodesNot available
Direct ParentNaphthalenes
Alternative Parents
Molecular FrameworkAromatic homopolycyclic compounds
SubstituentsNaphthalene - Arylsulfonic acid or derivatives - 1-sulfo,2-unsubstituted aromatic compound - Phenylhydrazine - Aryl ketone - Monocyclic benzene moiety - Organic sulfonic acid or derivatives - Organosulfonic acid or derivatives - Organosulfonic acid - Sulfonyl - Vinylogous amide - Ketone - Organic alkali metal salt - Hydrazone - Organic oxygen compound - Organic nitrogen compound - Amine - Primary amine - Hydrocarbon derivative - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic oxide - Organic sodium salt - Organic salt - Organic cation - Aromatic homopolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as naphthalenes. These are compounds containing a naphthalene moiety, which consists of two fused benzene rings.

From ClassyFire