Flurbiprofen Related Impurity 1 is a salt-form compound consisting of a methanesulfonic acid salt of methyl (2S,4R)-4-(3-chloro-7-methoxyquinoxalin-2-yl)oxypyrrolidine-2-carboxylate. It is a pharmaceutical impurity reference standard used in analytical testing to support quality control in drug manufacturing.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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CAS 42771-81-3
5-methylisoxazole-4-carboxylic acid
pharmaceutical intermediate
Methyl (R)-3-pyrrolidinecarboxylate
pharmaceutical intermediate
L-Alanine benzyl ester 4-toluenesulfonate
pharmaceutical intermediate
2-methyl-L-proline
pharmaceutical intermediate
methanesulfonic acid;methyl (2S,4R)-4-(3-chloro-7-methoxyquinoxalin-2-yl)oxypyrrolidine-2-carboxylate
CCZFBHQUONFINY-KATIXKQHSA-N
COC1=CC2=C(C=C1)N=C(C(=N2)O[C@@H]3C[C@H](NC3)C(=O)OC)Cl.CS(=O)(=O)O
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