250686-82-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 250686-82-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,6,8 and 6 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 250686-82:
(8*2)+(7*5)+(6*0)+(5*6)+(4*8)+(3*6)+(2*8)+(1*2)=149
149 % 10 = 9
So 250686-82-9 is a valid CAS Registry Number.
250686-82-9Relevant articles and documents
Synthesis of furo[2,3-c]quinolin-4(5H)-ones
Majumdar,Kundu,Biswas
, p. 2399 - 2406 (2007/10/03)
A number of 1-aryloxymethyl-3H-pyrano[2,3-c]quinolin-5(6H)-ones (4a-d, 4f-i) on heating in N,N-diethylaniline for 8 h underwent an unusual ring contraction to give 1-aryloxymethyl-2-methylfuro[2,3-c]quinolin-4(5H)-ones (Sa-d, 5f-i) in 66-79 % yields.
