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91420-78-9

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91420-78-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91420-78-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,4,2 and 0 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 91420-78:
(7*9)+(6*1)+(5*4)+(4*2)+(3*0)+(2*7)+(1*8)=119
119 % 10 = 9
So 91420-78-9 is a valid CAS Registry Number.

91420-78-9Relevant articles and documents

Synthesis of virtually enantiopure aminodiols with three adjacent stereogenic centers by epoxidation and ring-opening

Luo, Lan,Yamamoto, Hisashi

supporting information, p. 10466 - 10470 (2015/11/10)

A virtually complete enantioselective synthesis of 3-amino-1,2-diols with three consecutive stereocenters was accomplished by a sequential cascade of two kinetic resolutions, which features a Sharpless or Hafnium-catalyzed asymmetric epoxidation and a subsequent W-catalyzed aminolysis. Enantiopure products with up to >99.9% ee and >99.9:0.1 dr were obtained and could serve as potential building blocks for pharmaceutical or biological significant molecules.

Highly diastereo- and enantio-selective epoxidation of secondary allylic alcohols catalyzed by styrene monooxygenase

Lin, Hui,Liu, Yan,Wu, Zhong-Liu

scheme or table, p. 2610 - 2612 (2011/04/26)

Enantiomerically enriched glycidol derivatives with contiguous stereogenic centers were obtained in a highly diastereo- and enantio-selective epoxidation catalyzed with the styrene monooxygenase StyAB2.

Development and application of versatile bis-hydroxamic acids for catalytic asymmetric oxidation

Barlan, Allan U.,Zhang, Wei,Yamamoto, Hisashi

, p. 6075 - 6087 (2008/02/03)

In this article, we describe the development and preliminary results of our new designed C2-symmetric bis-hydroxamic acid (BHA) ligands and the application of the new ligands for vanadium-catalyzed asymmetric epoxidation of allylic alcohols as well as homoallylic alcohols. From this success we demonstrate the versatile nature of BHA in the molybdenum catalyzed asymmetric oxidation of unfunctionalized olefins and sulfides.

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