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287732-37-0

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287732-37-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 287732-37-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,7,7,3 and 2 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 287732-37:
(8*2)+(7*8)+(6*7)+(5*7)+(4*3)+(3*2)+(2*3)+(1*7)=180
180 % 10 = 0
So 287732-37-0 is a valid CAS Registry Number.

287732-37-0Downstream Products

287732-37-0Relevant articles and documents

Chloromethyl-, dichloromethyl-, and trichloromethyl-1,2,4-triazines and their 4-oxides: Method for the synthesis and tele-substitution reactions with C-nucleophiles

Kozhevnikov,Kataeva,Rusinov,Chupakhin

, p. 1295 - 1300 (2007/10/03)

A simple procedure was developed for the synthesis of 1,2,4-triazines and their 4-oxides containing the ClCH2, Cl2CH, or CCl 3 group at position 3 by cyclization of 2-aryl-2-hydrazono-1- oximinoethanes with the corresponding chloroacetonitriles. The reaction pathway depends on the number of halogen atoms in the acetonitrile used. The reactions with trichloroacetonitrile, monochloroacetonitrile, and dichloroacetonitrile afford 3-trichloromethyl-1,2,4-triazines, 3-chloromethyl-1,2,4-triazine 4-oxides, and a mixture of the corresponding dichloromethyltriazines and their 4-oxides, respectively. The reactions of 3-trichloromethyl-1,2,4-triazines with indoles and phenols are accompanied by tele-substitution with elimination of halogen from the trichloromethyl group to give 5-indolyl- (or 5-hydroxyphenyl)-3-dichloromethyl-1,2,4-triazines.

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