116785-93-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 116785-93-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,7,8 and 5 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 116785-93:
(8*1)+(7*1)+(6*6)+(5*7)+(4*8)+(3*5)+(2*9)+(1*3)=154
154 % 10 = 4
So 116785-93-4 is a valid CAS Registry Number.
116785-93-4Relevant articles and documents
New Fused Nitrogen-Rich Heterocycles from 5,6-Dichloropyrazine-2,3-dicarbonitrile
Ried, Walter,Tsiotis, Georgios
, p. 1197 - 1200 (2007/10/02)
In the easily accessible 5,6-dichloropyrazine-2,3-dicarbonitrile (1) the chlorine atoms can be readily exchanged by amines yielding the new pyrazinedicarbonitriles 2-5, which upon treatment with hydrazine hydrate form the nitrogen-rich heterocycles 6-9.
