Pigment Orange 13 Chemical Name PIGMENT ORANGE 13 C.I. No. 21110 CAS No. 3520-72-7 Synonyms Oppasin Orange 3050,Panax Orange P,Eljon Orange GNS,Flexiverse Orange 13,Permanent Orange G,Fast Orange G Molecular Formula C32H24Cl2N8O2 Molecular Weight 623.49