116131-08-9 Usage
Uses
Dyphylline (D826500) impurity.
Check Digit Verification of cas no
The CAS Registry Mumber 116131-08-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,1,3 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 116131-08:
(8*1)+(7*1)+(6*6)+(5*1)+(4*3)+(3*1)+(2*0)+(1*8)=79
79 % 10 = 9
So 116131-08-9 is a valid CAS Registry Number.
116131-08-9Relevant articles and documents
Concerning the identity test for caffeine in the pharmacopoeia. Part 1: Imidazo[1,5-a]pyrimidinium salts
Moehrle,Wirtz
, p. 115 - 123 (2007/10/03)
Since the edition of the DAB 9 a specific reaction is proposed as identity test for caffeine. According to the literature, at first a hydrolysis to caffeidine occurs with following reaction to the enaminone of acetylacetone. Model experiments however show