Pigment Red 49:1 Chemical Name PIGMENT RED 49:1 C.I. No. 15630:1 CAS No. 1103-38-4 Synonyms Lithol Rubine RB-SCH,Aquasol Red CL Paste,Flexobrite Red AD491,IRGALITE Red LBO Molecular Formula C20H14N2O4S Molecular Weight 378.40