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27490-05-7

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27490-05-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 27490-05-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,4,9 and 0 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 27490-05:
(7*2)+(6*7)+(5*4)+(4*9)+(3*0)+(2*0)+(1*5)=117
117 % 10 = 7
So 27490-05-7 is a valid CAS Registry Number.

27490-05-7Upstream product

27490-05-7Relevant articles and documents

Synthesis and Properties of 1,1,3,3-Tetrakis(pentafluorophenyl)-cyclo-di(silthiane) and Related Compounds

Horn, H.-G.,Probst, M.

, p. 1169 - 1178 (2007/10/03)

The synthesis of tetrakis(pentafluorophenyl-cyclo-di(silthiane) and related compounds by reacting organosubstituted silanes with sulfur or hexamethyldisilthiane is reported.The compounds are characterized by analysis, by relative molecular mass, by 1H, 13C, 19F, and 29Si NMR spectroscopy, and by mass and IR spectra, respectively.Two 29Si NMR signals of different intensity found for compounds with two different organic substituents on silicon are explained by the existence of diastereomers. - Keywords: Perfluoro-organic cyclo-di(silthianes); Synthesis; NMR spectra; Diastereomers

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