115203-90-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 115203-90-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,5,2,0 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 115203-90:
(8*1)+(7*1)+(6*5)+(5*2)+(4*0)+(3*3)+(2*9)+(1*0)=82
82 % 10 = 2
So 115203-90-2 is a valid CAS Registry Number.
115203-90-2Relevant academic research and scientific papers
Improved Procedure for Conversion of Penicillin V into Monocyclic β-Lactams
Davis, Michael,Wu, Wen-Yang
, p. 223 - 229 (2007/10/02)
Improved procedures for the preparation of the Kamiya compound (3R,4R)-4-(benzothiazol-2'-yldithio)-3-phenoxyacetamidoazetidin-2-one (6) from penicillin V (1) are described.A novel feature is ozonolysis, near room temperature, in aqueous methanol in the p
