172758-08-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172758-08-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,7,5 and 8 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 172758-08:
(8*1)+(7*7)+(6*2)+(5*7)+(4*5)+(3*8)+(2*0)+(1*8)=156
156 % 10 = 6
So 172758-08-6 is a valid CAS Registry Number.
InChI:InChI=1/C18H22N6O3/c1-9(2)15(25)22-18-21-14-13(16(26)23-18)24(11(4)10(3)20-14)17(27)12-6-5-7-19-8-12/h5-11H,1-4H3,(H3,20,21,22,23,25,26)
172758-08-6Relevant articles and documents
Pteridines CXX.1 synthesis and properties of tetrahydro-pterins coupled to 1,4-dihydropyridines
Rehse, Joachim,Pfleiderer, Wolfgang
experimental part, p. 953 - 970 (2010/10/03)
N2-Isobutyroyl-5,6,7,8-tetrahydropterins (610) have been coupled with nicotinic acid to form the N5-nicotinoyl derivatives 1115. Quaternization at the pyridine moiety led to 1931 which can be reduced to the corresponding N-substitute