129055-78-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129055-78-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,0,5 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 129055-78:
(8*1)+(7*2)+(6*9)+(5*0)+(4*5)+(3*5)+(2*7)+(1*8)=133
133 % 10 = 3
So 129055-78-3 is a valid CAS Registry Number.
129055-78-3Relevant academic research and scientific papers
SOME REACTIONS OF N-ETHYLISATIN WITH METHYL KETONES
Metwally, Saoud A.,Younes, Mansour I.,Abbas, Hessin H.
, p. 591 - 598 (2007/10/02)
N-Ethylisatin (1) reacts with some methyl ketones such as acetophenone, 2-acethylthiophene and 2-acethylpyridine to give the corresponding addition products 2.Also, 1 reacts with active methylene derivatives such as oxindole, or 3-methyl-2-pyrazolin-5-one
