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2217-81-4

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2217-81-4 Usage

Chemical Properties

PALE YELLOW CRYSTALLINE POWDER

Check Digit Verification of cas no

The CAS Registry Mumber 2217-81-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,1 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2217-81:
(6*2)+(5*2)+(4*1)+(3*7)+(2*8)+(1*1)=64
64 % 10 = 4
So 2217-81-4 is a valid CAS Registry Number.

2217-81-4Relevant articles and documents

Organoselenium-catalyzed vicinal dichlorination of unsaturated phosphonates

Zeng, Xianghua,Gong, Chunhua,Zhang, Junyong,Xie, Jingli

, p. 7866 - 7871 (2016/09/12)

Diphenyl diselenide (PhSeSePh) was effective as a pre-catalyst for the vicinal dichlorination of α,β-unsaturated phosphonates with sulfuryl chloride. The reaction conditions were mild and the desired products were formed in up to 93% yield and moderate diastereoselectivity (10:1). The important diphenylselenium dichloride intermediate was obtained and characterized by X-ray crystallography.

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