67395-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67395-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,3,9 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 67395-21:
(7*6)+(6*7)+(5*3)+(4*9)+(3*5)+(2*2)+(1*1)=155
155 % 10 = 5
So 67395-21-5 is a valid CAS Registry Number.
67395-21-5Relevant articles and documents
ON THE MECHANISM OF THE REACTION OF ENAMINES AND DIMETHYL ACETYLENEDICARBOXYLATE (DMAD) IN POLAR AND APOLAR SOLVENTS
Visser, G. W.,Verboom, W.,Trompenaars, W. P.,Reinhoudt, D. N.
, p. 1217 - 1220 (1982)
-Cycloadducts of enamines and DMAD, formed in apolar solvents, isomerize to pyrrolizine derivatives under mild conditions in protic polar solvents like methanol and 1-butanol.