4857-17-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4857-17-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,5 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4857-17:
(6*4)+(5*8)+(4*5)+(3*7)+(2*1)+(1*7)=114
114 % 10 = 4
So 4857-17-4 is a valid CAS Registry Number.
4857-17-4Relevant articles and documents
Wittig reactions in the ionic solvent [bmim][BF4]
Boulaire, Virginie Le,Gree, Rene
, p. 2195 - 2196 (2007/10/03)
The ionic salt [bmim][BF4] is an attractive solvent for Wittig reactions, allowing both easier separation of alkenes from Ph3PO together with eficient reuse to the solvent.
