Specification Sheet
Product Name Fluorescein diacetate 5(6)-isothiocyanate
Product Number 16231
Product Brand SIGMA
Molecular Weight 473.45
 
TEST SPECIFICATION
APPEARANCE (COLOR) White to Faint Yellow
APPEARANCE (FORM) Powder
PURITY (HPLC AREA %) ≥ 90 % (SUM OF ISOMERS)
PROTON NMR SPECTRUM CONFORMS TO STRUCTURE
EMISSION MAXIMUM 517 ± 5 nm
REMARKS ON LUMINESCENCE EX. 497 NM IN 0.1 M PHOSPHATE PH 7.0, ESTERASE
SUITABILITY ASSAY SUITABLE AS A FLUOROGENIC SUBSTRATE FOR ESTERASES
RECOMMENDED RETEST PERIOD 24 MONTHS