72237-07-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72237-07-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,2,3 and 7 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 72237-07:
(7*7)+(6*2)+(5*2)+(4*3)+(3*7)+(2*0)+(1*7)=111
111 % 10 = 1
So 72237-07-1 is a valid CAS Registry Number.
72237-07-1Relevant academic research and scientific papers
The Chemistry of 4-Mercaptoazetidine-2-ones. Part 2. Synthesis of Bisnorpenicillins
Osborne, Neal F.
, p. 150 - 155 (2007/10/02)
Reaction of the 4-mercaptoazetidinone (2) with benzyl 2-bromoacrylate gave the C-3-epimeric bisnorpenicillin esters (6b) and (7b).Standard procedures were used to convert the ester (6b) into bisnorpenicillin V (3) and bisnorampicillin (15).By contrast (2)
