Certificate Of Analysis
Product Name Leu-Trp,
crystalline
Product Number L0503
Product Brand SIGMA
CAS Number 5156-22-9
Molecular Formula C17H23N3O3
Molecular Weight 317.38
 
TEST SPECIFICATION LOT 034H0728 RESULTS
APPEARANCE WHITE POWDER WITH A FAINT YELLOW CAST
SOLUBILITY SLIGHTLY HAZY FAINT PINK SOLUTION AT 100 MG PLUS 2 ML OF 1 M HYDROCHLORIC ACID
IR SPECTRUM CONSISTENT WITH STRUCTURE
WATER CONTENT BY KARL FISCHER 4.4%
ELEMENTAL ANALYSIS 61.5% CARBON 12.4% NITROGEN
PURITY BY THIN LAYER CHROMATOGRAPHY GREATER THAN 99%
QC RELEASE DATE OCTOBER 2003