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38503-20-7

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38503-20-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 38503-20-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,8,5,0 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 38503-20:
(7*3)+(6*8)+(5*5)+(4*0)+(3*3)+(2*2)+(1*0)=107
107 % 10 = 7
So 38503-20-7 is a valid CAS Registry Number.

38503-20-7Relevant articles and documents

Epoxide Formation by Indirect Electroreductive Coupling between Aldehydes or Ketones and Activated gem-Dichloro Compounds

Oudeyer,Leonel,Paugam,Nedelec

, p. 389 - 400 (2004)

Epoxides are prepared by indirect electroreductive coupling of carbonyl compounds (aldehydes or ketones) and activated gem-dichloro compounds. This process is more efficient with aryl ketones than with aryl aldehydes. Though yields are only moderate, this

Enantioselective synthesis of (thiolan-2-yl)diphenylmethanol and its application in asymmetric, catalytic sulfur ylide-mediated epoxidation

Wu, Hsin-Yi,Chang, Chih-Wei,Chein, Rong-Jie

, p. 5788 - 5793 (2013/07/25)

This work describes an expeditious and efficient preparation of enantiopure (thiolan-2-yl)diphenylmethanol (2) featuring a double nucleophilic substitution and Shi epoxidation as key steps. One of the applications of its benzyl ether derivative to asymmetric sulfur ylide-mediated epoxidation with up to 92% ee (14 examples) was also demonstrated herein.

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