117759-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117759-91-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,7,5 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 117759-91:
(8*1)+(7*1)+(6*7)+(5*7)+(4*5)+(3*9)+(2*9)+(1*1)=158
158 % 10 = 8
So 117759-91-8 is a valid CAS Registry Number.
117759-91-8Relevant articles and documents
A GENERAL METHOD FOR THE N-ALKYLATION OF THIOAMIDES.
Katritzky, Alan R.,Drewniak, Malgorzata
, p. 1755 - 1758 (2007/10/02)
Thioamides are N-alkylated in a two-step procedure: (i) Reaction with an aldehyde and benzotriazole yields an adduct which is (ii) reduced to the N-alkylthioamide by NaBH4.