137524-57-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137524-57-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,2 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137524-57:
(8*1)+(7*3)+(6*7)+(5*5)+(4*2)+(3*4)+(2*5)+(1*7)=133
133 % 10 = 3
So 137524-57-3 is a valid CAS Registry Number.
137524-57-3Relevant academic research and scientific papers
Dihalogenation of β-ketosulfides. Synthesis of α-keto methyl esters and α-keto S-phenyl thioesters
Fortes,Souto,Okino
, p. 2045 - 2052 (2007/10/02)
α-Keto esters and α-keto S-phenyl thioesters are synthesized from β-keto sulfides by dihalogenation with sulfuryl chloride followed by solvolysis with methanol and acetone/water respectively.
