Vat Violet 3
Name:C.I.Vat Violet 3,C.I.73395.
Molecular Structure: Thioindigo class.
Molecular Formula:C20H14Cl2NO2S2
Molecular Weight: 421.36.
CAS Registry Number:2379-75-1.
Manufacturing Methods: 2,5-Dimethyl-4-chlorophenyl mercapto acetic acid with Chlorosulfonic acid cyclization, oxidation.