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689277-85-8

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689277-85-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 689277-85-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,9,2,7 and 7 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 689277-85:
(8*6)+(7*8)+(6*9)+(5*2)+(4*7)+(3*7)+(2*8)+(1*5)=238
238 % 10 = 8
So 689277-85-8 is a valid CAS Registry Number.

689277-85-8Upstream product

689277-85-8Relevant articles and documents

Convenient preparation and spectroscopic characterization of 7r-hydroxymatairesinol

Ciriello, Umberto,Colombo, Eleonora,Paladino, Giuseppe,Passarella, Daniele

, (2021/09/30)

The preparation of 7R-HMR (allo-hydroxymatairesinol) is reported by: (a) NaBH4 kinetic reduction of 7R/7S diastereomeric mixture; and (b) epimerization of the C7 hydroxyl group by Mitsunobu reaction and subsequent ester hydrolysis. The availability of highly pure target compound (7R-HMR) made it possible to confirm the structure of the target compound and to complete the full spectroscopic characterization.

Radical carboxyarylation approach to lignans. Total synthesis of (-)-arctigenin, (-)-matairesinol, and related natural products

Fischer, Joshua,Reynolds, Aaron J.,Sharp, Lisa A.,Sherburn, Michael S.

, p. 1345 - 1348 (2007/10/03)

Total syntheses of seven biologically important lignan natural products, including (-)-arctigenin, (-)-matairesinol, and (-)α-conidendrin, by way of a highly stereoselective domino radical sequence is presented. The reported stereochemistry of the natural product 7-hydroxyarctigenin is shown to be erroneous; a diastereoisomeric structure is assigned to the natural product.

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