Certificate Of Analysis
Product Name Betamethasone 17-valerate
Product Number B0515
Product Brand SIGMA
CAS Number 2152-44-5
Molecular Formula C27H37FO6
Molecular Weight 476.58
 
TEST SPECIFICATION LOT 106K1615 RESULTS
APPEARANCE WHITE POWDER WHITE POWDER
SOLUBILITY CLEAR COLORLESS SOLUTION AT 50 MG PLUS 1.0 ML OF METHANOL:CHLOROFORM (1:1) CLEAR COLORLESS SOLUTION AT 50 MG PLUS 1.0 ML OF METHANOL:CHLOROFORM (1:1)
LOSS ON DRYING 0.05%
ULTRAVIOLET/VISIBLE SPECTRUM EMM = 15.4 TO 15.8 AT LAMBDA MAX 238 TO 240 NM IN METHANOL EMM = 15.6 AT LAMBDA MAX 239 NM IN METHANOL (AS IS)
PURITY BY HPLC > OR = 98% 98.8%
QC RELEASE DATE NOVEMBER 2006