25997-59-5 Usage
Uses
6-Bromo-2-naphthyl α-D-galactopyranoside can be acted as a useful reagent for determination of alpha-D-Galactosidase activity.
Definition
ChEBI: An alpha-D-galactoside having a 6-bromo-2-naphthyl substituent at the anomeric position.
Purification Methods
It is prepared from penta-O-acetyl-D-galactoside, 6-bromo-2naphthol and ZnCl2. The resulting tetra-acetate (2g) is hydrolysed by dissolving in 0.3N KOH (100mL) and heating until the solution is clear, then filtering and cooling to give colourless crystals of the -isomer which are collected and recrystallised twice from hot MeOH. The high specific rotation is characteristic of the isomer. The tetraacetate has m 155-156o, [] D 20 +60o (c 1, CHCl3) [Dey & Pridham Biochem J 115 47 1969] [reported m 75-85o, [] D 24 +94o (c 1.3, dioxane), Monis et al. J Histochem Cytochem 11 653 1963]. [Beilstein 17 IV 2972.]
Check Digit Verification of cas no
The CAS Registry Mumber 25997-59-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,9,9 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 25997-59:
(7*2)+(6*5)+(5*9)+(4*9)+(3*7)+(2*5)+(1*9)=165
165 % 10 = 5
So 25997-59-5 is a valid CAS Registry Number.
InChI:InChI=1/C16H17BrO6/c17-10-3-1-9-6-11(4-2-8(9)5-10)22-16-15(21)14(20)13(19)12(7-18)23-16/h1-6,12-16,18-21H,7H2/t12-,13+,14+,15-,16+/m1/s1
