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Benzoic acid (3aS,4aR,7aR,8R,8aS)-8-(tert-butyl-dimethyl-silanyloxy)-2,2,6,6-tetramethyl-tetrahydro-benzo[1,2-d;4,5-d']bis[1,3]dioxol-3a-ylmethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

199338-66-4

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199338-66-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 199338-66-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,3,3 and 8 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 199338-66:
(8*1)+(7*9)+(6*9)+(5*3)+(4*3)+(3*8)+(2*6)+(1*6)=194
194 % 10 = 4
So 199338-66-4 is a valid CAS Registry Number.

199338-66-4Relevant academic research and scientific papers

Catalytic asymmetric epoxidation

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Page column 47, (2010/01/30)

A compound and method for producing an enantiomerically enriched epoxide from an olefin using a chiral ketone and an oxidizing agent is disclosed.

A Class of C2 and Pseudo C2 Symmetric Ketone Catalysts for Asymmetric Epoxidation. Conformational Effect on Catalysis

Wang, Zhi-Xian,Miller, Susie M.,Anderson, Oren P.,Shi, Yian

, p. 6443 - 6458 (2007/10/03)

A class of C2 and pseudo C2 symmetric ketones with one fused ring at each side of the carbonyl group have been prepared from quinic acid and found to be effective catalysts for the asymmetric epoxidation of a variety of olefins. Electron deficient olefins such as enones can be efficiently epoxidized. Encouragingly good enantioselectivity is also obtained for the epoxidation of styrenes. The studies show that the ketone conformation plays an important role in the reactivity and selectivity of the catalyst.

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