634917-02-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 634917-02-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,4,9,1 and 7 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 634917-02:
(8*6)+(7*3)+(6*4)+(5*9)+(4*1)+(3*7)+(2*0)+(1*2)=165
165 % 10 = 5
So 634917-02-5 is a valid CAS Registry Number.
634917-02-5Relevant articles and documents
Preparation of Chiral N-Vinyl Oxazolidinones by a Simple General Procedure
Gaulon, Catherine,Dhal, Robert,Dujardin, Gilles
, p. 2269 - 2272 (2003)
A high yielding, general, and practical procedure for the N-vinylation of 2-oxazolidinones via TMSOTf-promoted dehydroalkoxylation of N,O-acetals is described.