157732-65-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157732-65-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,7,3 and 2 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 157732-65:
(8*1)+(7*5)+(6*7)+(5*7)+(4*3)+(3*2)+(2*6)+(1*5)=155
155 % 10 = 5
So 157732-65-5 is a valid CAS Registry Number.
157732-65-5Relevant articles and documents
Syntheses of novel bicyclic β-lactams by intramolecular nucleophile transfer reactions of N-tosyloxy β-lactams
Guzzo,Teng,Miller
, p. 8275 - 8292 (2007/10/02)
Intramolecular nucleophile transfer reaction of several N-tosyloxy β- lactams was applied to construct a new six-membered ring in the product bicyclic β-lactams. The bicyclic products generally possessed cis stereochemistry on the β-lactam ring. The major
