1277097-22-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1277097-22-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,7,0,9 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1277097-22:
(9*1)+(8*2)+(7*7)+(6*7)+(5*0)+(4*9)+(3*7)+(2*2)+(1*2)=179
179 % 10 = 9
So 1277097-22-9 is a valid CAS Registry Number.
1277097-22-9Relevant academic research and scientific papers
3-formylpyrroles from 3-furfurylamines by bromine oxidation reaction
Harn, Piin-Jye,Lin, Chu-Chung,Wu, Hsien-Jen
, p. 1321 - 1326 (2011/10/07)
Oxidation of 3-furfurylamines 3a-e with bromine in acetone-water solution gave N-substituted 3-formylpyrroles 4a-e in good yields. A reaction mechanism via the Clauson-Kaas reaction followed by the cis-trans isomerization of the 2-ene-1,4-diones 13 and 14
