117957-59-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117957-59-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,5 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 117957-59:
(8*1)+(7*1)+(6*7)+(5*9)+(4*5)+(3*7)+(2*5)+(1*9)=162
162 % 10 = 2
So 117957-59-2 is a valid CAS Registry Number.
117957-59-2Relevant academic research and scientific papers
A NEW ENANTIO AND DIASTEREOSELECTIVE SYNTHESIS OF 2-AZETIDINONES AS USEFUL INTERMEDIATES OF β-LACTAM ANTIBIOTICS
Bonini, Carlo,Fabio, Romano Di
, p. 815 - 818 (2007/10/02)
An expeditious enantio and diastereoselective route to β-lactam synthons has been developed; two novel key radical reactions allowed us to obtain two useful intermediates in the synthesis of thienamycin and PS-5.
