136745-44-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136745-44-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,7,4 and 5 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 136745-44:
(8*1)+(7*3)+(6*6)+(5*7)+(4*4)+(3*5)+(2*4)+(1*4)=143
143 % 10 = 3
So 136745-44-3 is a valid CAS Registry Number.
136745-44-3Relevant academic research and scientific papers
Reactions of 2-Aminoazulenes with Electron-Deficient Acetylenes
Abe, Noritaka
, p. 2393 - 2397 (2007/10/02)
2-Aminoazulene (1a) reacted with dimethyl acetylenedicarboxylate (DMAD) to give dimethyl 1,2-azulene-dicarboxylate, tetramethyl 2,2'-(2-amino-1,3-azulenediyl)bis, and dimethyl 2-(4-methoxycarbonyl-2-oxo-1,2-dihydroazulenopyridin-10-yl)fum
