158692-54-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158692-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,6,9 and 2 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 158692-54:
(8*1)+(7*5)+(6*8)+(5*6)+(4*9)+(3*2)+(2*5)+(1*4)=177
177 % 10 = 7
So 158692-54-7 is a valid CAS Registry Number.
158692-54-7Relevant articles and documents
An Efficient Synthesis of 2-Chloro-3-carboethoxy- or 2-Chloro-3-cyano- 4,5-disubstituted and 5-substituted Pyrroles
Foley, Louise H.
, p. 5989 - 5992 (1994)
Reaction of substituted 2-cyano-4-oxo-alkanoic acid ethyl esters or 2-cyano-4-oxo-alkanonitriles with HCl gas in 2-propanol or concentrated HCl in 2-propanol for the dinitriles provides an efficient synthesis of substituted 2-chloropyrroles from readily a
