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81581-98-8

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81581-98-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81581-98-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,8 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81581-98:
(7*8)+(6*1)+(5*5)+(4*8)+(3*1)+(2*9)+(1*8)=148
148 % 10 = 8
So 81581-98-8 is a valid CAS Registry Number.

81581-98-8Relevant articles and documents

THE N,N'-DIACYL-4,5-DIHYDROIMIDAZOLIUM ION AS AN ELECTROPHILE

Bergman, Jan,Goonewardena, Harris,Sjoeberg, Birger

, p. 297 - 300 (2007/10/02)

2-Methyl-4,5-dihydroimidazole/acetic anhydride reacts smoothly with indole at room temperature giving N,N'-diacetyl-2-methyl-2-(3-indolyl)-imidazolidine.This adduct can be hydrolysed to 3-acetylindole.Other aromatics, like 1,3-dimethoxybenzene, undergo similar reactions.

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