Chemical Name: (11β,16β)-9-Fluoro-11,17-dihydroxy-16-methyl-21-[(methylsulfonyl)oxy]pregna-1,4-diene-3,20-dione
Smiles: C[C@@]1([C@@]2(O)C(CO[S](C)(=O)=O)=O)[C@](C[C@@H]2C)([H])[C@@](CCC3=CC4=O)([H])[C@@](F)([C@]3(C=C4)C)[C@@H](O)C1
Inchi: InChI=1S/C12H26N4O5/c13-3-8-7(17)2-6(16)12(20-8)21-11-5(15)1-4(14)9(18)10(11)19/h4-12,17-19H,1-3,13-16H2/t4-,5+,6-,7+,8-,9+,10-,11-,12-/m1/s1
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