13857-55-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13857-55-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,8,5 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 13857-55:
(7*1)+(6*3)+(5*8)+(4*5)+(3*7)+(2*5)+(1*5)=121
121 % 10 = 1
So 13857-55-1 is a valid CAS Registry Number.
InChI:InChI=1/C8H14/c1-4-6-8(3)7-5-2/h4,7H,1,5-6H2,2-3H3/b8-7+
13857-55-1Relevant 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.