1-[(2S)-3-(Acetylthio)-2-methyl-1-oxopropyl]-L-proline monohydrate;WOOVUTUKNLXXPF-JXLXBRSFSA-N;Captopril impurity J CRS;(2S)-1-[(2S)-3-(Acetylsulfanyl)-2-m;1-[(2S)-3-(Acetylthio)-2-methylpropanoyl]-L-proline Hydrate;Captopril Impurity J as Hydrate;Captopril EP Impurity J as Hydrate