Leuprolide Acetate EP Impurity D

Chemical Name: (6S,9S,12R,15S,18S)-18-((S)-2-((S)-3-(1H-imidazol-5-yl)-2-((S)-5-oxopyrrolidine-2-carboxamido)propanamido)-3-(1H-indol-3-yl)propanamido)-1-amino-6-((S)-2-(ethylcarbamoyl)pyrrolidine-1-carbonyl)-15-(4-hydroxybenzyl)-1-imino-9,12-diisobutyl-8,11,14,17-tetraoxo-2,7,10,13,16-pentaazanonadecan-19-yl acetate

Synonym: (6R,7R)-7-(4-hydroxyisoxazole-3-carboxamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid