Chemical Name: 17,21-Dihydroxy-16β-methylpregna-1,4,9(11)-triene-3,20-dione
Smiles: [H][C@@]12C[C@@H]([C@]([C@]1(CC=C3[C@]2(CCC4=CC(C=C[C@]34C)=O)[H])C)(O)C(CO)=O)C
Application of LC–MSn in conjunction with mechanism-based stress studies in the elucidation of drug impurity structure: Rapid identification of a process impurity in betamethasone 17-valerate drug substance
Min Li, Mingxiang Lin, Abu Rustum
Journal of Pharmaceutical and Biomedical Analysis 48 (2008) 1451–1456
Development and Validation of Stability-indicating HPLC Method for Betamethoasone Dipropionate and Related Substances in Topical Formulation
A. s. vairale*, p. sivaswaroop1 and s. bandana
Indian Journal of Pharmaceutical Sciences 74(2):107-15