215657-43-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 215657-43-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,5,6,5 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 215657-43:
(8*2)+(7*1)+(6*5)+(5*6)+(4*5)+(3*7)+(2*4)+(1*3)=135
135 % 10 = 5
So 215657-43-5 is a valid CAS Registry Number.
215657-43-5Relevant articles and documents
A versatile synthon for chemoselective N-acylation reagents, 2-fluoro-N-mesylaniline
Kondo, Kazuhiro,Sekimoto, Erika,Miki, Kazuki,Murakami, Yasuoki
, p. 2973 - 2974 (1998)
2-Fluoro-N-mesylaniline 3b undergoes various N-acylalions easily to give 2-fluoro-N-acyl-N-mesylanilines 4b-8b, which function as good chemoselective N-acylation reagents, especially for benzyloxycarbonylation.
