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159752-87-1

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159752-87-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159752-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,7,5 and 2 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 159752-87:
(8*1)+(7*5)+(6*9)+(5*7)+(4*5)+(3*2)+(2*8)+(1*7)=181
181 % 10 = 1
So 159752-87-1 is a valid CAS Registry Number.

159752-87-1Relevant articles and documents

Reaction of hexafluorobenzene with trimethylsilyl ethers

Zhang, Y. F.,Kirchmeier, Robert L.,Shreeve, Jean'ne M.

, p. 287 - 292 (1994)

Hexafluorobenzene reacts readily with a variety of trimethylsilyl ethers ROSiMe3 (R = CF3CH2, FCH2CH2, H(CF2)nCH2 (n = 2, 4), CF3(CF2)6CH2, CF3(CF2)5CH2CH2, Me3SiOCH2CH2, C6F5OCH2CH2, C6H5, 4-FC6H4) to give from mono- to hexapolyfluoroalkoxy- and polyfluoroaryloxy-benzenes.The structure of C6(OCH2CF3)6 has been confirmed by single-crystal X-ray analysis.The perfluorinated ether C6F5OCF2CF3 may be synthesized from C6F5OCH2CF3 by chlorination and subsequent fluorination with SbF3/SbCl5.The chlorination of 5,6,7,8-tetrafluoro-1,4-benzodioxane is also discussed.

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