Chemical Name: 17,21-Dihydroxy-16β-methylpregna-1,4,11-triene-3,20-dione
Smiles: [H][C@@]12C[C@@H]([C@@](C(CO)=O)(O)[C@]1(C=C[C@]3([C@]2(CCC4=CC(C=C[C@]34C)=O)[H])[H])C)C
Inchi: InChI=1S/C22H28O5/c1-12-8-16-15-5-4-13-9-14(24)6-7-19(13,2)22(15)18(27-22)10-20(16,3)21(12,26)17(25)11-23/h6-7,9,12,15-16,18,23,26H,4-5,8,10-11H2,1-3H3/t12-,15-,16-,18-,19-,20-,21-,22+/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