51500-54-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 51500-54-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,5,0 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 51500-54:
(7*5)+(6*1)+(5*5)+(4*0)+(3*0)+(2*5)+(1*4)=80
80 % 10 = 0
So 51500-54-0 is a valid CAS Registry Number.
51500-54-0Relevant articles and documents
SYNTHESIS OF 1-ARYL-5-CHLOROPYRAZOLES
Dudinov, A. A.,Belen'kii, L. I.,Krayushkin, M. M.
, p. 36 - 39 (2007/10/02)
A method for obtaining 1-aryl-5-chloropyrazoles with vacant 3 and 4 positions by cyclization of 3,3-dichloro-2-propenal arylhydrazones is proposed.