Certificate Of Analysis
Product Name Timolol maleate salt,
≥98% (TLC), powder
Product Number T6394
Product Brand SIGMA
CAS Number 26921-17-5
Molecular Formula C13H24N4O3S · C4H4O4
Molecular Weight 432.49
 
TEST SPECIFICATION LOT 073H0074 RESULTS
APPEARANCE WHITE POWDER WITH A YELLOW CAST
SOLUBILITY CLEAR FAINT YELLOW SOLUTION AT 50 MG PLUS 1.0 ML OF WATER
IR SPECTRUM CONSISTENT WITH STRUCTURE
ULTRAVIOLET/VISIBLE SPECTRUM E1% = 204 AT LAMBDA MAX 294 NM AT PH 1.0
PURITY BY PERCHLORIC ACID TITRATION 99.8%
PURITY BY THIN LAYER CHROMATOGRAPHY >99% (SINGLE SPOT)