664971-15-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664971-15-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,9,7 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 664971-15:
(8*6)+(7*6)+(6*4)+(5*9)+(4*7)+(3*1)+(2*1)+(1*5)=197
197 % 10 = 7
So 664971-15-7 is a valid CAS Registry Number.
664971-15-7Relevant articles and documents
Substituted 2-(2-Arylethenyl)quinazolines. Synthesis and Structure
Harutyunyan,Gukasyan,Panosyan,Tamazyan,Ayvazyan,Danagulyan
, p. 1363 - 1369 (2019/11/02)
The reaction of 2-methyl-4H-3,1-benzoxazin-4-one and its 6-iodo derivatives with a number of amines in polyphosphoric acid afforded 3- and 3,6-substituted 2-methylquinazolin-4(3H)-ones. The latter reacted with aromatic and heterocyclic aldehydes under sol