137242-86-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137242-86-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,4 and 2 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 137242-86:
(8*1)+(7*3)+(6*7)+(5*2)+(4*4)+(3*2)+(2*8)+(1*6)=125
125 % 10 = 5
So 137242-86-5 is a valid CAS Registry Number.
137242-86-5Relevant academic research and scientific papers
A convenient synthesis of β-lactams from alkylthioimidates
Grochowski, Edward,Pupek, Krzysztof
, p. 6759 - 6768 (2007/10/02)
Stereoselective syntheses of trans-3,4,4-substituted-azetidin-2-ones from alkylthioimidates are described. Reduction of these compounds gave stereoselectively cis-4-alkyl-azetidin-2-ones which could be useful intermediates for preparation of biologically
