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77946-89-5

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77946-89-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77946-89-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,4 and 6 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 77946-89:
(7*7)+(6*7)+(5*9)+(4*4)+(3*6)+(2*8)+(1*9)=195
195 % 10 = 5
So 77946-89-5 is a valid CAS Registry Number.

77946-89-5Relevant articles and documents

Synthesis of perfluorinated dialkyl ethers from products of reaction of hexafluoropropene dimers with methanol

Moldavskii,Bispen,Furin,Zhuzhgov

, p. 575 - 582 (2007/10/03)

Perfluoro-2-methyl-2-pentene reacts with methanol in tetrahydrofuran and acetone in the presence of KOH to form predominantly the product of fluorine substitution at the double bond, whereas perfluoro-4-methyl-2-pentene reacts with methanol on heating in tetrahydrofuran in the presence of KOH or triethylamine with incorporation of two or three methoxy groups. Gas-phase fluorination of 3-methoxyperfluoro-2-methyl-2-pentene and 3-methoxyperfluoro-2-methylpentane with elemental fluorine on catalysts is studied, and conditions for preparing perfluoro-2-methyl-3-methoxypentane are revealed.

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