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Reference substances

Reference substances

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General information

Inventory

EC number:
235-473-4
EC name:
4-[(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulphonic acid
CAS number:
12239-15-5

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Reference substance information

IUPAC name:
4-[(E)-2-(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)diazen-1-yl]-2,5-dichlorobenzene-1-sulfonic acid
Synonyms
Names:
Identifier:
common name
Acid Yellow 49
4-[(5-amino-3-methyl-1-phenyl-1H-pyrazol-4-yl)azo]-2,5-dichlorobenzenesulphonic acid

CAS information

CAS number:
12239-15-5

Molecular and structural information

Molecular formula:
C16H13Cl2N5O3S
Molecular weight:
426.283
SMILES notation:
n1(c2ccccc2)c(c(\N=N\c2c(cc(S(O)(=O)=O)c(c2)Cl)Cl)c(n1)C)N
InChl:
1S/C16H13Cl2N5O3S/c1-9-15(16(19)23(22-9)10-5-3-2-4-6-10)21-20-13-7-12(18)14(8-11(13)17)27(24,25)26/h2-8H,19H2,1H3,(H,24,25,26)/b21-20+
Structural formula:
Chemical structure