Pill Identification by Imprints: 54 420 Home Pill Identification by Imprints: 54 420 2 results MERCAPTOPURINE 50 MG TABLET Side 1: 54 420 Color: Pale Yellow Side 2: Shape: Round MERCAPTOPURINE 50 MG TABLET Side 1: 54 420 Color: Pale Yellow Side 2: Shape: Round Other Popular Drug Imprint amneal CORGARD 40 MF 1 RDY M 434 C41 G&W 0555 MYLAN 2045 M L21 PRAVACHOL 20 CT WPI 3699 D2/850 RP 868 AN 321 L009 251 TAK ALG-12.5 R0.50 E 32 PreQue TEVA TEVA 398 9 3 MPC 600 KPI 284 logo and 831 GG 623 WATSON 487 UT 0.25 MONODOX 50 260 CL 042 A/P 12.5 / 45 P 400 OR X10 GG 977 874 4 ZANTAC 150