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31536-21-7

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31536-21-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31536-21-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,5,3 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 31536-21:
(7*3)+(6*1)+(5*5)+(4*3)+(3*6)+(2*2)+(1*1)=87
87 % 10 = 7
So 31536-21-7 is a valid CAS Registry Number.

31536-21-7Relevant articles and documents

Facile aerobic photo-oxidative synthesis of sulfinic esters

Singh, Pravin K.,Singh, Praveen P.,Srivastava, Vishal

, p. 383 - 387 (2018)

A mild and efficient one-pot visible light-induced method has been developed for the synthesis of sulfinic esters. Sulfinic esters are important structural elements that are frequently found in pharmaceutical agents and biologically active natural products. The routine procedure in the drug discovery and development process to prepare and fully characterize sulfinic esters make them a drug candidate for biological evaluation.

Electrochemical Synthesis of Sulfinic Esters via Aerobic Oxidative Esterification of Thiophenols with Alcohols

Zhou, Hongyan,Duan, Jiaokui,Xie, Dongtai,Yang, Jingya,Ma, Ben,Wang, Ganggang,Wu, Chengqi,Wang, Xi-Cun

, p. 2705 - 2712 (2020/09/15)

A method for the electrochemical synthesis of sulfinic esters by aerobic oxidative coupling of thiophenols and alcohols has been developed. Using electrons as the redox reagent and O 2in air as the oxygen source, the reactions proceeded smoothly at room temperature, even for a gram-scale preparation. No use of catalyst, clean redox reagent, green and abundant oxygen source, and mild reaction conditions make this strategy eco-friendl.

Electrochemical synthesis of sulfinic esters from alcohols and thiophenols

He, Yang,Zhang, Jinli,Xu, Liang,Wei, Yu

supporting information, (2020/01/31)

Electrochemical oxidative couplings between S[sbnd]H and O[sbnd]H bonds are achieved herein directly from readily-available alcohols and thiophenols, affording a series of diverse sulfinic esters. This strategy can take advantage of 6 equivalents of alcohol, relative to thiophenol, to achieve moderate to good yields, without the assistance of any metallic catalysts, bases, and additional oxidants.

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