254732-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 254732-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,4,7,3 and 2 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 254732-19:
(8*2)+(7*5)+(6*4)+(5*7)+(4*3)+(3*2)+(2*1)+(1*9)=139
139 % 10 = 9
So 254732-19-9 is a valid CAS Registry Number.
254732-19-9Relevant academic research and scientific papers
Kraus, George A.,Wang, Xuemei
, p. 8513 - 8514 (1999)
A six-step synthesis of aflatoxin M2 starting from 1,3,5-trimethoxybenzene is described. The key step is the addition of dichloromethyllithium.
