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500772-23-6

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500772-23-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 500772-23-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,7,7 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 500772-23:
(8*5)+(7*0)+(6*0)+(5*7)+(4*7)+(3*2)+(2*2)+(1*3)=116
116 % 10 = 6
So 500772-23-6 is a valid CAS Registry Number.

500772-23-6Relevant articles and documents

Redox-Divergent Construction of (Dihydro)thiophenes with DMSO

Chen, Qing-An,He, Gu-Cheng,Hu, Yan-Cheng,Ji, Ding-Wei,Liu, Heng,Zhang, Xiang-Xin,Zhao, Chao-Yang

supporting information, p. 24284 - 24291 (2021/10/08)

Thiophene-based rings are one of the most widely used building blocks for the synthesis of sulfur-containing molecules. Inspired by the redox diversity of these features in nature, we demonstrate herein a redox-divergent construction of dihydrothiophenes, thiophenes, and bromothiophenes from the respective readily available allylic alcohols, dimethyl sulfoxide (DMSO), and HBr. The redox-divergent selectivity could be manipulated mainly by controlling the dosage of DMSO and HBr. Mechanistic studies suggest that DMSO simultaneously acts as an oxidant and a sulfur donor. The synthetic potentials of the products as platform molecules were also demonstrated by various derivatizations, including the preparation of bioactive and functional molecules.

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