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120564-72-9

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120564-72-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 120564-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,5,6 and 4 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 120564-72:
(8*1)+(7*2)+(6*0)+(5*5)+(4*6)+(3*4)+(2*7)+(1*2)=99
99 % 10 = 9
So 120564-72-9 is a valid CAS Registry Number.

120564-72-9Downstream Products

120564-72-9Relevant articles and documents

Chemotherapeutic Agents : Part X - Synthesis of 2-Pyridyltriazolopyrimidines as Leishmanicides

Ram, Vishnu J.

, p. 825 - 829 (2007/10/02)

2-Pyridyl-7-hydroxy-5-methyl-triazolopyrimidines (2a,b) have been prepared by condensation of 1a,b with ethyl acetoacetate in acetic acid and transformed into 2-pyridyl-7-chloro-5-methyl-triazolopyrimidines (3) with phosphoryl chloride.Nucleophilic displacement of the chloro group in 3 by amines and hydrazine provides 4a-h and 5 respectively.Boiling of 3 with thiourea in ethanol gives 2-pyridyl-7-mercapto-5-methyl-triazolopyrimidine (6).The hydrazine 5 on reaction with ethyl acetoacetate forms the hydrazone (7).Condensation of 1a,b with acetylacetone, ethoxymethylenemalononitrile, ethyl ethoxymethylenecyanoacetate and diethyl ethoxymethylenemalonate yields 8, 9, 10 and 11 respectively.Similarly, 12a-e are prepared by condensation of 1 with β-ketoesters.Fusion of 1 with β,β-bis(methylmercapto)-α-cyanoacrylonitrile and methyl β,β-bis(methylmercapto)-α-cyanoacrylate at 170-180 deg C provides 15 and 16 respectively.

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