158525-50-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158525-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,5,2 and 5 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 158525-50:
(8*1)+(7*5)+(6*8)+(5*5)+(4*2)+(3*5)+(2*5)+(1*0)=149
149 % 10 = 9
So 158525-50-9 is a valid CAS Registry Number.
158525-50-9Relevant articles and documents
Facile, regioselective syntheses of N-alkylated 2,3-diaminopyridines and imidazo[4,5-b]pyridines
Khanna,Weier,Lentz,Swenton,Lankin
, p. 960 - 965 (1995)
Useful strategies are reported for the differentiation and selective synthetic manipulations of amino groups at the 2- and 3-positions of pyridines. It has been found that 2,3-diaminopyridine reacts with aldehydes under reductive amination conditions to g
