Certificate Of Analysis
Product Name Estrone,
meets USP testing specifications
Product Number E1274
Product Brand SIGMA
CAS Number 53-16-7
Molecular Formula C18H22O2
Molecular Weight 270.37
 
TEST SPECIFICATION LOT 097H0470 RESULTS
CLARITY OF SOLUTION PASS PASS
IDENTITY PASS PASS
SPECIFIC ROTATION +158 DEG TO +165 DEG +162.8 DEG
LOSS ON DRYING NMT 0.5% 0.02%
RESIDUE ON IGNITION NMT 0.5% PASS
LIMIT OF EQUILENIN AND EQUILIN PASS PASS
ORDINARY IMPURITIES PASS PASS
ASSAY 97.0% TO 103.0% (DRY BASIS) 100.3%
NOTE ALL RESULTS SUPPLIER DATA
MEETS CURRENT USP REQUIREMENTS
RECOMMENDED RETEST 7 YEARS APRIL 2005 EXTENDED FROM APRIL 2004
QC RELEASE DATE APRIL 2004