1331772-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1331772-20-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,1,7,7 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1331772-20:
(9*1)+(8*3)+(7*3)+(6*1)+(5*7)+(4*7)+(3*2)+(2*2)+(1*0)=133
133 % 10 = 3
So 1331772-20-3 is a valid CAS Registry Number.
1331772-20-3Relevant academic research and scientific papers
Kinetic resolution of β-lactams via enantioselective N-acylation
Yang, Xing,Bumbu, Valentina D.,Birman, Vladimir B.
experimental part, p. 4755 - 4757 (2011/11/04)
Enantioselective N-acylation of 4-aryl-β-lactams in the presence of acyl transfer catalyst Cl-PIQ provides an effective method for their non-enzymatic kinetic resolution.
