117901-03-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117901-03-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,0 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 117901-03:
(8*1)+(7*1)+(6*7)+(5*9)+(4*0)+(3*1)+(2*0)+(1*3)=108
108 % 10 = 8
So 117901-03-8 is a valid CAS Registry Number.
117901-03-8Relevant articles and documents
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.
