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1308833-65-9

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1308833-65-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1308833-65-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,8,8,3 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1308833-65:
(9*1)+(8*3)+(7*0)+(6*8)+(5*8)+(4*3)+(3*3)+(2*6)+(1*5)=159
159 % 10 = 9
So 1308833-65-9 is a valid CAS Registry Number.

1308833-65-9Relevant articles and documents

Metal-Free Electrophilic Alkynylation of Sulfenate Anions with Ethynylbenziodoxolone Reagents

Amos, Stephanie G. E.,Nicolai, Stefano,Gagnebin, Alec,Le Vaillant, Franck,Waser, Jerome

, p. 3687 - 3701 (2019/03/07)

Alkynyl sulfoxides are important building blocks with a unique reactivity in organic chemistry, but only a few reliable methods have been reported to synthesize them. A novel route to access alkynyl sulfoxides is reported herein by using ethynyl benziodoxolone (EBX) reagents to trap sulfenate anions generated in situ, via a retro-Michael reaction. The reaction takes place under metal-free and mild conditions. It is compatible with aryl, heteroaryl, and alkyl sulfoxides with up to 90% yield. This practical access to alkynyl sulfoxides is expected to facilitate the application of these useful building blocks in organic synthesis.

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