157496-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157496-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,4,9 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 157496-18:
(8*1)+(7*5)+(6*7)+(5*4)+(4*9)+(3*6)+(2*1)+(1*8)=169
169 % 10 = 9
So 157496-18-9 is a valid CAS Registry Number.
157496-18-9Relevant academic research and scientific papers
Ten Hoeve,Wynberg
, p. 2215 - 2221 (1994)
Cyclic amidines are prepared in 3 steps from an aromatic aldehyde, isobutyraldehyde, and urea. The amidines 1 and 2 are readily resolved using chiral cyclic phosphoric acids.
