87931-49-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 87931-49-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,9,3 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 87931-49:
(7*8)+(6*7)+(5*9)+(4*3)+(3*1)+(2*4)+(1*9)=175
175 % 10 = 5
So 87931-49-5 is a valid CAS Registry Number.
87931-49-5Relevant articles and documents
Studies in Decarboxylation. Part 16. Steric Inhibition of Resonance in a 1,5-Sigmatropic Reaction
al-Borno, Amal,Bigley, David B.
, p. 1311 - 1312 (2007/10/02)
The rates of gas-phase decarboxylation of some 3-phenyl-substituted but-3-enoic acids are best rationalized in terms of steric inhibition of resonance in the more sterically crowded members.