126839-83-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 126839-83-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,6,8,3 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 126839-83:
(8*1)+(7*2)+(6*6)+(5*8)+(4*3)+(3*9)+(2*8)+(1*3)=156
156 % 10 = 6
So 126839-83-6 is a valid CAS Registry Number.
126839-83-6Relevant articles and documents
A Simple Regioselective Synthesis of Ethyl 1,5-Diarylpyrazole-3-carboxylates
Murray, William V.,Wachter, Michael P.
, p. 1389 - 1392 (2007/10/02)
Improved procedures for the regioselective preparation of ethyl 1,5-diarylpyrazole-3-carboxylates are described.The new procedures utilize prepared lithium aroylpyruvate intermediates which, when combined with arylphenylhydrazine hydrochlorides from 1,5-d
