128381-38-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128381-38-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,3,8 and 1 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 128381-38:
(8*1)+(7*2)+(6*8)+(5*3)+(4*8)+(3*1)+(2*3)+(1*8)=134
134 % 10 = 4
So 128381-38-4 is a valid CAS Registry Number.
128381-38-4Relevant academic research and scientific papers
Mesoionic compounds with a bridge nitrogen atom. 19. Thiazolo[3,2-a]quinoxalinium oxides
Fedotov,Romanov
, p. 1399 - 1402 (2007/10/02)
(2-Quinoxalylthio)acetic acids have been found to cyclize on treatment with acetic anhydride to give the mesoionic thiazolo[3,2-a]quinoxalinium oxides. Some reactions of these compounds have been studied, and the relationship of the color of the compounds
