81093-58-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81093-58-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,9 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81093-58:
(7*8)+(6*1)+(5*0)+(4*9)+(3*3)+(2*5)+(1*8)=125
125 % 10 = 5
So 81093-58-5 is a valid CAS Registry Number.
81093-58-5Relevant academic research and scientific papers
Syntheses of Some 2-Pyrrolidones Carrying N-Heterocycles as Substituents
Paul, Heinz,Richter, Ulrich,Huschert, Guenter
, p. 17 - 22 (2007/10/02)
Cyclisations of 2-(4-chlorobutyrylamino)thiazoles or 2,5-bis(4-chlorobutyrylamino)-1,3,4-thiadiazole in the presence of piperidine or ammonia lead to 1--2-pyrrolidones and 2,5-bis(2-oxopyrrolidino)-1,3,4-thiadiazole, in analogy to the synthes
