Certificate Of Analysis
Product Name Isocytosine,
≥99%
Product Number I2127
Product Brand SIGMA
CAS Number 108-53-2
Molecular Formula C4H5N3O
Molecular Weight 111.10
 
TEST SPECIFICATION LOT 077K1204 RESULTS
APPEARANCE WHITE TO OFF-WHITE POWDER OFF-WHITE POWDER
SOLUBILITY CLEAR COLORLESS SOLUTION AT 50 MG/ML IN ACETIC ACID CLEAR COLORLESS SOLUTION AT 50 MG/ML IN ACETIC ACID
ULTRAVIOLET/VISIBLE SPECTRUM EMM = 6.40 TO 6.70 AT LAMBDA MAX 273NM 0.1 M SODIUM HYDROXIDE EMM = 6.48 AT LAMBDA MAX 273 NM IN 0.1 M SODIUM HYDROXIDE
PURITY BY THIN LAYER CHROMATOGRAPHY > OR = 99% > 99%
QC RELEASE DATE JULY 2007