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501370-44-1

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501370-44-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 501370-44-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,1,3,7 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 501370-44:
(8*5)+(7*0)+(6*1)+(5*3)+(4*7)+(3*0)+(2*4)+(1*4)=101
101 % 10 = 1
So 501370-44-1 is a valid CAS Registry Number.

501370-44-1Downstream Products

501370-44-1Relevant articles and documents

New 1,2,3-triazolo[4,5-e]1,2,4-triazolo[4,3-c]pyrimidine derivatives II

Biagi, Giuliana,Giorgi, Irene,Livi, Oreste,Pacchini, Federica,Scartoni, Valerio

, p. 885 - 888 (2007/10/03)

The 7-chloro-3-(2-chlorobenzyl)- and 7-chloro-3-(2-fluorobenzyl)-1,2,3-triazolo[4,5-d]pyrimidines (1 and 4), by nucleophilic replacement with some hydrazides, gave the corresponding 7-hydrazidoderivatives (2a-e and 5a-e). These, by heating in Dowtherm, underwent an intramolecular cyclization to form the new tricyclic 7-substituted-3-(2-chlorobenzyl)- and 3-(2-fluorobenzyl)-1,2,3-triazolo[4,5-e]1,2,4-triazolo[4,3-c]pyrimidines (3a-d and 6a-d). The 7-hydrazino-3-(2-chlorobenzyl)- and 7-hydrazino-3-(2-fluorobenzyl)-triazolo-pyrimidines (9a and 9b) were also prepared via the corresponding mercapto (7a and 7b) and thiomethyl (8a and 8b) derivatives.

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