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300678-35-7

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300678-35-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 300678-35-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,0,6,7 and 8 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 300678-35:
(8*3)+(7*0)+(6*0)+(5*6)+(4*7)+(3*8)+(2*3)+(1*5)=117
117 % 10 = 7
So 300678-35-7 is a valid CAS Registry Number.

300678-35-7Relevant articles and documents

Asymmetric synthesis of the natural erythro-(1R,2S)-8-O-4′-neolignan myrislignan

Xia,Wang, Wei

, p. 93 - 96 (2011/10/01)

An efficient and practical asymmetric synthesis of erythro-(1R,2S)-8-O- 4′-neolignan myrislignan was achieved by using vanillin and pyrogallic acid as the starting materials. Two key steps are involved: preparation of an enantiopure threo alcohol of predictable stereochemistry by dihydroxylation with AD-mix-β, and inversion of the absolute configuration from the threo to the erythro isomer using a Mitsunobu reaction. The route illustrates a new methodology for the synthesis of erythro-8-O-4′-neolignan. Graphical abstract: [Figure not available: see fulltext.]

First enantioselective syntheses of (2R,3R)- and (2S,3S)-3-(4-hydroxy-3-methoxyphenyl)-2-hydroxymethyl-1,4-benzodioxan-6-carbaldehyde

Gu, Wenxin,Chen, Xiaochuan,Pan, Xinfu,Chan, Albert S. C.,Yang, Teng-Kuei

, p. 2801 - 2807 (2007/10/03)

An enantioselective and regioselective total synthesis approach to chiral 1,4-benzodioxane lignans (2R,3R)- and (2S,3S)-3-(4-hydroxy-3-methoxyphenyl)-2-hydroxymethyl-1,4-benzodioxan-6-carbaldehyde is reported. Copyright (C) 2000 Elsevier Science Ltd.

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