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42020-23-5

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42020-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42020-23-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,2 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 42020-23:
(7*4)+(6*2)+(5*0)+(4*2)+(3*0)+(2*2)+(1*3)=55
55 % 10 = 5
So 42020-23-5 is a valid CAS Registry Number.

42020-23-5Downstream Products

42020-23-5Relevant articles and documents

Biomimetic Total Syntheses of (+)-Chloropupukeananin, (-)-Chloropupukeanolide D, and Chloropestolides

Ikeda, Wataru,Kobayashi, Susumu,Suzuki, Takahiro,Tanino, Keiji,Watanabe, Soichiro

, p. 15597 - 15605 (2021/11/12)

Chloropupukeananin, chloropupukeanolides, and chloropestolides are a family of structurally complex bioactive natural products that possess highly functionalized tricyclo[4.3.1.03,7]decane or bicyclo[2.2.2]octane skeletons. Biosynthesis of the chloropupukeananin family is triggered by the intermolecular heterodimeric Diels-Alder reaction between maldoxin and iso-A82775C; however, the enzymes involved have not yet been identified. We herein report the one-pot biomimetic synthesis of chloropupukeananin and chloropupukeanolide D. Moreover, the effect of the solvent on the intermolecular Diels-Alder reaction of siccayne and maldoxin suggested that the biosynthesis of the chloropupukeananin family involves a Diels-Alderase-catalyzed heterodimeric Diels-Alder reaction.

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