134772-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134772-89-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,7,7 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 134772-89:
(8*1)+(7*3)+(6*4)+(5*7)+(4*7)+(3*2)+(2*8)+(1*9)=147
147 % 10 = 7
So 134772-89-7 is a valid CAS Registry Number.
134772-89-7Relevant 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
