74377-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74377-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,7 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 74377-20:
(7*7)+(6*4)+(5*3)+(4*7)+(3*7)+(2*2)+(1*0)=141
141 % 10 = 1
So 74377-20-1 is a valid CAS Registry Number.
74377-20-1Relevant academic research and scientific papers
SYNTHESIS OF 1H-BENZOTHIOPYRANOIMIDAZOL-4-ONES
Savel'ev, V.L.,Afanas'eva, T.G.,Klyuev, S.M.,Zagorevskii, V.A.
, p. 363 - 367 (2007/10/02)
By the condensation of 3,4-diaminothiocoumarins containing primary or secondary amino groups in position 4, with formic and acetic acids (or acetic anhydrides), a number of 1H-benzothiopyranoimidazol-4-ones and their 2-methyl derivatives have be
