91504-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91504-21-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,5,0 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91504-21:
(7*9)+(6*1)+(5*5)+(4*0)+(3*4)+(2*2)+(1*1)=111
111 % 10 = 1
So 91504-21-1 is a valid CAS Registry Number.
91504-21-1Relevant academic research and scientific papers
Satoh, Hisao,Tsuji, Teruji
, p. 1733 - 1736 (1984)
The novel unnatural ring system, 1-phosphacephalosporin, was synthesized for the first time from 4-acetoxy-2-azetidinone.
