Pigment Red 2 Chemical Name PIGMENT RED 2 C.I. No. 12310 CAS No. 6041-94-7 Synonyms Aquaflex Scarlet R,Fast Red 2R,Irgalite Red FBN,Yorabrite Red 2G,Unisperse Red FBN-PI Molecular Formula C23H15Cl2N3O2 Molecular Weight 436.29