57501-29-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57501-29-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,5,0 and 1 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 57501-29:
(7*5)+(6*7)+(5*5)+(4*0)+(3*1)+(2*2)+(1*9)=118
118 % 10 = 8
So 57501-29-8 is a valid CAS Registry Number.
57501-29-8Relevant articles and documents
Preparation and Stereochemistry of Some 1,1-Disubstituted Buta-1,3-dienes
Curry, Michael J.,Stevens, D.R.
, p. 1756 - 1760 (2007/10/02)
The preparation of five (E)- and five (Z)-1,1-disubstituted buta-1,3-dienes is described and their stereochemistry assigned.The effect of the Z-E isomerism on the chemical shifts in the 13C and 1H n.m.r. spectra is discussed.
