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41743-39-9

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41743-39-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 41743-39-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,7,4 and 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 41743-39:
(7*4)+(6*1)+(5*7)+(4*4)+(3*3)+(2*3)+(1*9)=109
109 % 10 = 9
So 41743-39-9 is a valid CAS Registry Number.

41743-39-9Relevant articles and documents

New Phenolic Components from Dalbergia Volubilis

Chawla, H. Mohindra,Johny, C. J.,Mittal, Ram S.

, p. 82 - 87 (2007/10/02)

Phytochemical examination of non green branches of Dalbergia volubilis on extensive column and preparative thin layer chromatography yielded twelve compounds eight of which are already known compounds and were identified as sitosterol, 7-hydroxy-4-methyl-coumarin, dalbergin, biochanin-A, umbelliferone, p-hydroxy cinnamic acid, kaempferol and quercetin-3-O-glucoside.The other four compounds were new natural products, three of which were identified as novel 4-phenyl-2H-1-benzopyran-2-ones while the fourth one was a new 12a-hydroxy rotenoid.The structure of these new compounds has been established on the basis of chemical and spectral evidences and through derivatization, as 4',7-dihydroxy-3'-methoxy-4-phenyl-2H-1-benzopyran-2-one, 3',7-dihydroxy-4',5-dimethoxy-2H-1-benzopyran-2-one, 3',7-dihydroxy4',5-dimethoxy-6-formyl-2H-1-benzopyran-2-one and a complex rotenoid determined to be as (VII).The co-occurence of 4-methyl-2H-1-benzopyran-2-ones, 4-phenyl-2H-1-benzopyran-2-ones, isoflavones and rotenoids is of interest from biogenetic considerations.

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