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21592-61-0

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21592-61-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21592-61-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,9 and 2 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21592-61:
(7*2)+(6*1)+(5*5)+(4*9)+(3*2)+(2*6)+(1*1)=100
100 % 10 = 0
So 21592-61-0 is a valid CAS Registry Number.

21592-61-0Relevant articles and documents

Jones et al.

, p. 206 (1975)

Synthesis of cyclic ketones by electrochemical reduction of S-(2-methoxycarbonyl)phenyl thiolesters

Ozaki,Yoshinaga,Matsui,Adachi

, p. 2503 - 2505 (2007/10/03)

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Synthesis and nematocidal activity of aralkyl- and aralkenylamides related to piperamide on second-stage larvae of Toxocara canis

Kiuchi, Fumiyuki,Nakamura, Norio,Saito, Makiko,Komagome, Kazue,Hiramatsu, Hirokuni,Takimoto, Noriaki,Akao, Nobuaki,Kondo, Kaoru,Tsuda, Yoshisuke

, p. 685 - 696 (2007/10/03)

Seventy-nine aralkyl- and aralkenylamides related to piperamides were synthesized and their nematocidal activity against second-stage larvae of dog roundworm, Toxocara canis, was examined. The activity was greatly dependent on the alkyl chain length and the nature of the amine moiety, but was scarcely affected by the presence or absence of double bond(s) in the chain. The alkyl chain lengths which showed the strongest activity in a series of homologues were m=11 for the pyrrolidine amides and m=13 for the N- methylpiperazine amides. Although piperamides (3,4-methylenedioxyphenyl homologues) showed the strongest activity among the homologues tested, methoxy substituent(s) on the aromatic ring did not have much effect on the activity. However, conversion of the methoxy group to a hydroxy group greatly decreased the activity and shortened the chain length giving the strongest activity. Calculated log P values of non-phenolic aryl-piperamides fell in the range from 3.5 to 4.5, whereas those of hydroxyphenyl-piperamides were smaller, suggesting that different mechanisms are involved in the nematocidal activity of phenolic and non-phenolic compounds.

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