140-03-4 9-Octadecenoic acid, 12-(acetyloxy)-, methyl ester, [R-(Z)]- Flexricin P-4 Methyl 12-acetoxy-9-octadecenoate Methyl 12-acetoxyoleate Methyl acetyl ricinoleate Methyl ricinoleate, acetate NSC2398 Ricinoleic acid, methyl ester, acetate WLN: 9U2YOV1&5VO1