91638-71-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91638-71-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,3 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91638-71:
(7*9)+(6*1)+(5*6)+(4*3)+(3*8)+(2*7)+(1*1)=150
150 % 10 = 0
So 91638-71-0 is a valid CAS Registry Number.
91638-71-0Relevant articles and documents
Efficient method for the synthesis of new [2-(alkylarylthio)ethyl]pyridines
Sviridova,Laba,Vasil'ev,Litvinov
, p. 563 - 565 (2001)
An efficient method for the synthesis of new [2-(alkylarylthio)ethyl]pyridines was developed. The method is based on one-step mono- and polyalkylchlorosulfonation of arenes with complex electrophilic reagents (RX-HSO3Cl, RX = Bu1Cl, and 1-AdBr).