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724432-09-1

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724432-09-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 724432-09-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,4,4,3 and 2 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 724432-09:
(8*7)+(7*2)+(6*4)+(5*4)+(4*3)+(3*2)+(2*0)+(1*9)=141
141 % 10 = 1
So 724432-09-1 is a valid CAS Registry Number.

724432-09-1Relevant articles and documents

Natural-product-based insecticidal agents 14. Semisynthesis and insecticidal activity of new piperine-based hydrazone derivatives against Mythimna separata Walker in vivo

Qu, Huan,Yu, Xiang,Zhi, Xiaoyan,Lv, Min,Xu, Hui

supporting information, p. 5552 - 5557 (2013/10/01)

In continuation of our program aimed at the discovery and development of natural-product-based insecticidal agents, twenty-six new piperine-based hydrazone derivatives were synthesized from piperine, an alkaloid isolated from Piper nigrum Linn. The single-crystal structures of 6c, 6q and 6w were unambiguously confirmed by X-ray crystallography. Their insecticidal activity was evaluated against the pre-third-instar larvae of Mythimna separata Walker in vivo. Especially compounds 6b, 6i and 6r, the final mortality rates of which, at the concentration of 1 mg/mL, were 62.1%, 65.5% and 65.5%, respectively, exhibited more pronounced insecticidal activity compared to toosendanin at 1 mg/mL, a commercial botanical insecticide isolated from Melia azedarach. It suggested that introduction of the substituents at the C-2 position on the phenyl ring of the hydrazone derivatives was important for their insecticidal activity.

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