131889-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131889-34-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,8,8 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 131889-34:
(8*1)+(7*3)+(6*1)+(5*8)+(4*8)+(3*9)+(2*3)+(1*4)=144
144 % 10 = 4
So 131889-34-4 is a valid CAS Registry Number.
131889-34-4Relevant articles and documents
Synthesis and Mesomorphic Properties of 4-Substituted Phenyl and Phenylthio-4'--Benzoates
Neubert, M. E.,Sabol-Keast, S.
, p. 67 - 74 (2007/10/02)
A variety of esters and thioesters of the type were prepared by esterification of the acid with the phenols and thiols using the carbodiimide method.These compounds were of interest as possible ferroelectric liquid crystals.The required acid was
