CAS 89957-38-0 appears in our catalog under these names: CYTOCHROME P450 CYP3A1, RB X-100UL, CYTOCHROM P450 CYP1A1&1A2,RBX-100UL, CYTOCHROME P450 CYP1A1, RB X-100UL, CYTOCHR P450 CYP4A1/2/3,RBXRT-100UL, OPIOID RECPT DELTA, RB X-50UL. Offered by: Sigma-Aldrich. Available pack sizes: 1EA, -, 1ML.