128227-59-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128227-59-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,2 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128227-59:
(8*1)+(7*2)+(6*8)+(5*2)+(4*2)+(3*7)+(2*5)+(1*9)=128
128 % 10 = 8
So 128227-59-8 is a valid CAS Registry Number.
128227-59-8Relevant academic research and scientific papers
6-Diazopenicillanates. Part 1. Reactions with Furans
Matlin, Stephen A.,Chan, Lam,Catherwood, Bettina
, p. 89 - 96 (2007/10/02)
Benzhydryl, p-nitrobenzyl, and pivaloyloxymethyl esters of 6-diazopenicillanic acid undergo rhodium-catalysed reactions with furan giving 6-(4'-oxobut-2-enylidene)penicillanates in high yields.Substitution on the furan ring results in a strong steric effe
