Pill Identification by Imprints: S407 Home Pill Identification by Imprints: S407 1 result POTASSIUM CITRATE ER 10 MEQ TB Side 1: S407 Color: Pale Yellow Side 2: Shape: Oblong Other Popular Drug Imprint CL61 SZ C224 NT 50 WPI 867 D12 93 711 294 R PARLODEL 5 mg par 258 logo and 8 V01 MYLAN 7160 N6 M 575 O23 M. Amphet Salts S8 M945 RJ70 NORCO 539 MP 4 668 54 515 54 315 par 084 M 522 logo 150 93 311 179 M 447 2.5/1000 810 fentanyl 600 mcg A 2 1 298 MYLAN 6380 E 146 44-491 or 44-466 CL 26