81683-45-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81683-45-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,8 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 81683-45:
(7*8)+(6*1)+(5*6)+(4*8)+(3*3)+(2*4)+(1*5)=146
146 % 10 = 6
So 81683-45-6 is a valid CAS Registry Number.
81683-45-6Relevant articles and documents
A ONE-POT AND SELECTIVE PREPARATION OF 2-(N-ALKYL-4-CHLOROBUTYLAMINO)-4-CHLOROQUINAZOLINES
Miki, Hideki
, p. 7 - 9 (2007/10/02)
A new and facile synthesis of 2-(N-alkyl-4-chlorobutylamino)-4-chloroquinazolines by the reaction of 2,4(1H,3H)-quinazolinedione with N-alkylpyrrolidines in phosphoryl chloride is described.
