CAS NO:15958-19-7

EC NO:240-089-5

Molecular Formula:C₁₇H₁₃ClN₂O₄S

Molecular Weight:376.8141

Synonyms:D.C. Red No. 9;Lake Red C;Pigment Red 53-1;Red Lake C;2-Chloro-5-((2-hydroxy-1-naphthyl)azo)toluene-4-sulphonic acid;sodium 5-chloro-4-methyl-2-[2-(2-oxonaphthalen-1(2H)-ylidene)hydrazino]benzenesulfonate;5-chloro-4-methyl-2-[2-(2-oxonaphthalen-1(2H)-ylidene)hydrazino]benzenesulfonic acid;calcium bis{5-chloro-4-methyl-2-[(2E)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazino]benzenesulfonate};barium bis{5-chloro-4-methyl-2-[(2Z)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazinyl]benzenesulfonate};strontium bis{5-chloro-4-methyl-2-[(2Z)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazinyl]benzenesulfonate};5-chloro-2-[(2-hydroxy-1-naphthyl)azo]-4-methyl-benzenesulfonic acid;

Molecular Structure: