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500297-82-5

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500297-82-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 500297-82-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,2,9 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 500297-82:
(8*5)+(7*0)+(6*0)+(5*2)+(4*9)+(3*7)+(2*8)+(1*2)=125
125 % 10 = 5
So 500297-82-5 is a valid CAS Registry Number.

500297-82-5Downstream Products

500297-82-5Relevant articles and documents

Synthesis and derivatization of ethynyl α,α-dibromomethyl ketones: Formation of highly functionalized vinyl triflates

Rankin, Trent,Tykwinski, Rik R.

, p. 213 - 216 (2007/10/03)

(Matrix presented) We describe the synthesis of α,α -dibromomethyl ynones (8) and their subsequent derivatization to vinyl acetates (10). These vinyl acetates feature a 1,1-dibromo-olefin moiety, which is readily exploited in palladium-catalyzed Sonogashira, Stille, and Suzuki cross-coupling reactions with alkynes, stannanes, and boronic acids, respectively. A novel one-pot process then directly converts the resulting vinyl acetates 11-13 to the vinyl triflate derivatives 14a-j.

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