144631-61-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 144631-61-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,4,6,3 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 144631-61:
(8*1)+(7*4)+(6*4)+(5*6)+(4*3)+(3*1)+(2*6)+(1*1)=118
118 % 10 = 8
So 144631-61-8 is a valid CAS Registry Number.
144631-61-8Relevant articles and documents
Synthesis of 1,5-dimethyl-1,4-dihydropyrrolo[3,4-b]-pyrrol-6(5H)-one by intramolecular Diels-Alder reaction to the imidazole nucleus
Wuonola, Mark A.,Smallheer, Joanne M.
, p. 5697 - 5698 (1992)
N-Methyl-N-propargylimidazole-5-carboxamide undergoes thermal intramolecular Diels-Alder reaction to give the title compound. A related reaction of the corresponding sydnone system is also described.