111659-22-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111659-22-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,6,5 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 111659-22:
(8*1)+(7*1)+(6*1)+(5*6)+(4*5)+(3*9)+(2*2)+(1*2)=104
104 % 10 = 4
So 111659-22-4 is a valid CAS Registry Number.
111659-22-4Relevant articles and documents
On Alkylation and Acylation of 5-Hydrazino-1,2,3,4-thiatriazole Derivatives
Graubaum, Heinz,Seeboth, Helmuth
, p. 409 - 416 (2007/10/02)
5-Hydrazino-1,2,3,4-thiatriazole reacts with oxo carboxylic acids to give highly unstable 5-carboxyalkylidene-hydrazino-1,2,3,4-thiatriazoles (2).The more stable 5-alkylidene-hydrazino-1,2,3,4-thiatriazoles (3) may be alkylated; the thiatriazole system is