Chemical Name: 17α,21-Dihydroxy-16ß-methylpregna-1,4,9(11)-triene-3,20-dione-21-acetate
Smiles: O=C1C=C[C@@]2(C)C(CC[C@]3([H])C2=CC[C@@]4(C)C3C[C@H](C)[C@]4(O)C(COC(C)=O)=O)=C1
Inchi: InChI=1S/C23H27ClO7/c24-17-6-5-14(23-22(28)21(27)20(26)19(11-25)31-23)10-15(17)9-13-3-1-2-4-18(13)30-16-7-8-29-12-16/h1-6,10,16,19-23,25-28H,7-9,11-12H2/t16-,19+,20+,21-,22+,23-/m0/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