Bivalirudin Impurity A

(15R,21S,24S,27S,30S)-15-(2-amino-2-oxoethyl)-1-((S)-1-((S)-2-((S)-1-((R)-2-amino-3-phenylpropanoyl)pyrrolidine-2-carboxamido)-5-guanidinopentanoyl)pyrrolidin-2-yl)-24-benzyl-30-(((2S,3S)-1-((S)-2-(((S)-4-carboxy-1-(((S)-4-carboxy-1-(((S)-1-(((S)-1-carboxy-3-methylbutyl)amino)-3-(4-hydroxyphenyl)-1-oxopropan-2-yl)amino)-1-oxobutan-2-yl)amino)-1-oxobutan-2-yl)carbamoyl)pyrrolidin-1-yl)-3-methyl-1-oxopentan-2-yl)carbamoyl)-27-(2-carboxyethyl)-21-(carboxymethyl)-1,4,7,10,13,16,19,22,25,28-decaoxo-2,5,8,11,14,17,20,23,26,29-decaazatritriacontan-33-oic acid

(3S,9S,12S,15S,18S)-3-(1-((S)-1-((S)-2-((S)-1-((R)-2-amino-3-phenylpropanoyl)pyrrolidine-2-carboxamido)-5-guanidinopentanoyl)pyrrolidin-2-yl)-1,4,7,10-tetraoxo-2,5,8,11-tetraazatridecanamido)-12-benzyl-18-(((2S,3S)-1-((S)-2-(((S)-4-carboxy-1-(((S)-4-carboxy-1-(((S)-1-(((S)-1-carboxy-3-methylbutyl)amino)-3-(4-hydroxyphenyl)-1-oxopropan-2-yl)amino)-1-oxobutan-2-yl)amino)-1-oxobutan-2-yl)carbamoyl)pyrrolidin-1-yl)-3-methyl-1-oxopentan-2-yl)carbamoyl)-15-(2-carboxyethyl)-9-(carboxymethyl)-4,7,10,13,16-pentaoxo-5,8,11,14,17-pentaazahenicosane-1,21-dioic acid

(15S,24S,27S,30S,33S)-15-(2-amino-2-oxoethyl)-1-((S)-1-((S)-2-((S)-1-((R)-2-amino-3-phenylpropanoyl)pyrrolidine-2-carboxamido)-5-guanidinopentanoyl)pyrrolidin-2-yl)-27-benzyl-33-(((2S,3S)-1-((S)-2-(((S)-4-carboxy-1-(((S)-4-carboxy-1-(((S)-1-(((S)-1-carboxy-3-methylbutyl)amino)-3-(4-hydroxyphenyl)-1-oxopropan-2-yl)amino)-1-oxobutan-2-yl)amino)-1-oxobutan-2-yl)carbamoyl)pyrrolidin-1-yl)-3-methyl-1-oxopentan-2-yl)carbamoyl)-30-(2-carboxyethyl)-24-(carboxymethyl)-1,4,7,10,13,16,19,22,25,28,31-undecaoxo-2,5,8,11,14,17,20,23,26,29,32-undecaazahexatriacontan-36-oic acid

(S)-2-(3-amino-2,5-dioxopyrrolidin-1-yl)acetic acid