683779-79-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 683779-79-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,3,7,7 and 9 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 683779-79:
(8*6)+(7*8)+(6*3)+(5*7)+(4*7)+(3*9)+(2*7)+(1*9)=235
235 % 10 = 5
So 683779-79-5 is a valid CAS Registry Number.
683779-79-5Relevant articles and documents
Synthesis of substituted 4-aminothieno[2,3-d]-, 4-aminothieno[3,2-d]- and 4-aminothieno[3,4-d]pyrimidines
Zadorozhny
, p. 1028 - 1032 (2013/03/13)
A study was carried out on the nucleophilic cleavage of the lactam bond in 4-amino(pyrrolidino, piperidino, morpolino)thieno[2,3-d]-, -[3,2-d]-, and -[3,4-d]pyrimido[1,2-b]isoquinolin-11-ones. This bond is readily cleaved upon heating in methanolic NaOH a