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(E)-2-ethoxy-1,1,1-trifluoro-6,6-dimethyl-3-(phenylthio)hept-2-en-4-yne is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

253670-66-5

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253670-66-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 253670-66-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,6,7 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 253670-66:
(8*2)+(7*5)+(6*3)+(5*6)+(4*7)+(3*0)+(2*6)+(1*6)=145
145 % 10 = 5
So 253670-66-5 is a valid CAS Registry Number.

253670-66-5Relevant articles and documents

Palladium-catalyzed terminal alkyne coupling reaction of β-bromo-β- phenylthio or β-methylthio-α-trifluoromethyl enol ethers: A convenient synthesis of 2-sulfonyl-1-buten-3-ynes

Yoshimatsu, Mitsuhiro,Kinoshita, Sayaka,Sugimoto, Tomomi

, p. 1497 - 1500 (1999)

2-Sulfonyl-1-buten-3-yne (2-sulfonyl enyne) 7 was obtained via the Pd- catalyzed cross-coupling reactions of β-bromo enol ethers 3 and 4 and successive oxidation with m-chloroperbenzoic acid.

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