199457-72-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199457-72-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,4,5 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 199457-72:
(8*1)+(7*9)+(6*9)+(5*4)+(4*5)+(3*7)+(2*7)+(1*2)=202
202 % 10 = 2
So 199457-72-2 is a valid CAS Registry Number.
199457-72-2Relevant articles and documents
Synthesis of aryl 5-(2-chlorophenyl)-2-furoates under phase transfer catalysis
Li, Zheng,Wang, Xicun
, p. 3081 - 3086 (2007/10/03)
The steric hindered esters, aryl 5-(2-chlorophenyl)-2-furoates (3a-o), are synthesized via the reaction of 5-(2-chlorophenyl)-2-furoic acid (1) with thionyl chloride and phenols under liquid-liquid phase transfer catalysis in excellent yield.
