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(1R,2S,4R,6S)-4-Benzyloxy-8,8-dichloro-1,2-dimethyl-bicyclo[4.2.0]octan-7-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

133661-18-4

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133661-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133661-18-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,6,6 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 133661-18:
(8*1)+(7*3)+(6*3)+(5*6)+(4*6)+(3*1)+(2*1)+(1*8)=114
114 % 10 = 4
So 133661-18-4 is a valid CAS Registry Number.

133661-18-4Relevant articles and documents

Stereoselective synthesis of homogynolide-A, A bakkane from homogyne alpina

Hartmann, Benoit,Kanazawa, Alice M.,Depres, Jean-Pierre,Greene, Andrew E.

, p. 767 - 768 (1991)

Homogynolide-A, an antifeedant sesquiterpene, has been stereoselectively prepared from benzoquinone.

First comprehensive bakkane approach: Stereoselective and efficient dichloroketene-based total syntheses of (±)- and (-)-9-acetoxyfukinanolide, (±)- and (+)-bakkenolide a, (-)-bakkenolides III, B, C, H, L, V, and X, (±)- and (-)-homogynolide A, (±)-homogynolide B, and (±)-palmosalide C

Brocksom, Timothy J.,Coelho, Fernando,Depres, Jean-Pierre,Greene, Andrew E.,Freire de Lima, Marco E.,Hamelin, Olivier,Hartmann, Benoit,Kanazawa, Alice M.,Wang, Yanyun

, p. 15313 - 15325 (2007/10/03)

Cycloaddition of dichloroketene with dimethylcyclohexenes has been used as the key reaction in an efficient, general approach to the bakkanes. New methods and methodologies that have been developed in this work include spiro β-methylene-γ-butyrolactonizations, a vicinal dicarboxylation, an angelic ester preparation, a transesterification, an epoxy ketone double reduction, and a retro aldol-aldol approach to low-energy aldol isomers.

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