76943-40-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76943-40-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,9,4 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 76943-40:
(7*7)+(6*6)+(5*9)+(4*4)+(3*3)+(2*4)+(1*0)=163
163 % 10 = 3
So 76943-40-3 is a valid CAS Registry Number.
76943-40-3Relevant articles and documents
Rearrangement of 2-Ethynylpyridinium N-Imides to Pyrazolopyridines
Tsuchiya, Takashi,Sashida, Haruki
, p. 1109 - 1110 (1980)
Pyrazolopyridines (6) are obtained from the N-amino-2-ethynylpyridinium salts (5) on treatment with base.