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63403-43-0

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63403-43-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 63403-43-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,4,0 and 3 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 63403-43:
(7*6)+(6*3)+(5*4)+(4*0)+(3*3)+(2*4)+(1*3)=100
100 % 10 = 0
So 63403-43-0 is a valid CAS Registry Number.

63403-43-0Relevant articles and documents

Quantitative structure activity relationship studies in pyrethroid esters derived from substituted 3-methyl-2-phenoxybutanoic acids against Culex quinquefasciatus

Mathew, Nisha,Subramanian,Kalyanasundaram

, p. 40 - 44 (2007/10/03)

QSAR studies in relation to three physicochemical substituent parameters, lipophilicity, electronic and steric factors have been carried out with pyrethroid esters derived from substituted 3-methyl-2-phenoxybutanoic acids against Culex quinquefasciatus applying multiple regression analysis by grouping the esters into three based on their alcohol moiety. In the case of 3-phenoxybenzyl and α-cyano-3-phenoxybenzyl esters the larvicidal activity is mainly influenced by the lipophilic and electronic nature of the substituent at 4-position of the phenyl ring of the acid moiety. For adulticidal activity the lipophilicity of the substituent at 4-position followed by that of the substituents at 2-and 3-positions along with the steric effect are the important factors for 3-phenoxybenzyl and α-cyano-3-phenoxybenzyl esters. The larvicidal and adulticidal activities of 3,4-methylenedioxybenzyl esters are influenced by electronic factor followed by steric effect of the substituent.

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