166191-74-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 166191-74-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,1,9 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 166191-74:
(8*1)+(7*6)+(6*6)+(5*1)+(4*9)+(3*1)+(2*7)+(1*4)=148
148 % 10 = 8
So 166191-74-8 is a valid CAS Registry Number.
166191-74-8Relevant academic research and scientific papers
A facile synthesis of 3-hydroxythienoquinolin-4(5H)-ones
Gupta, M. C. L. N.,Darbarwar, Malleshwar
, p. 432 - 435 (2007/10/02)
Reaction of 4-chloroquinolin-2(1H)-ones (1a-c) with 2-mercapto acetic/propionic acids (2a,b) in the presence of base furnishes 2-acetic/propionic acids (3a-f), which on cyclodehydration in polyphosphoric acid afford 3-h
