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333800-18-3

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333800-18-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 333800-18-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,3,8,0 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 333800-18:
(8*3)+(7*3)+(6*3)+(5*8)+(4*0)+(3*0)+(2*1)+(1*8)=113
113 % 10 = 3
So 333800-18-3 is a valid CAS Registry Number.

333800-18-3Relevant articles and documents

Zonov, Yaroslav V.,Karpov, Victor M.,Mezhenkova, Tatyana V.,Platonov, Vyacheslav E.

, p. 24 - 34 (2018/08/17)

Synthesis and skeletal rearrangements of perfluorinated 4-alkyl- and 4-phenyl-tetralin-1-ones under the action of antimony pentafluoride

Zonov, Yaroslav V.,Karpov, Victor M.,Platonov, Vyacheslav E.

, p. 159 - 166 (2012/04/10)

Heating of perfluorinated 1-methyl- and 1-ethyltetralins with SiO 2 in an SbF5 medium at 100 °C results in perfluoro-4-alkyltetralin-1-ones formation. Perfluoro-4-methyltetralin-1-one, under the action of SbF5 at 180 °C with subsequent treatment of the reaction mixture with water, is converted to perfluoro-3,3-dimethylindan-1- one and perfluoro-3,4-dimethylisochromen-1-one. Perfluoro-4-ethyltetralin-1-one, under similar conditions, forms perfluoro-3-ethyl-3-methylindan-1-one, perfluoro-4-ethyl-3-methylisochromen-1-one and perfluoro-2-methyltetralin. Reaction of perfluorotetralin-1-one with pentafluorobenzene in the presence of SbF5 at 50-55 °C leads to the formation of perfluoro-4- phenyltetralin-1-one, which under the action of SbF5 at 75 °C isomerizes into perfluoro-3-methyl-3-phenylindan-1-one. Heating of the latter with SbF5 at 75-95 °C gives, after treatment of the reaction mixture with water, perfluoro-2-(2-methylphenyl)-3-phenylpropenoic acid and perfluoro-4-methyl-3-phenylisochromen-1-one.

Skeletal transformations of perfluoro-1-phenylindan under the action of antimony pentafluoride

Karpov,Mezhenkova,Platonov,Sinyakov

, p. 53 - 57 (2007/10/03)

Perfluoro-1-phenylindan (1) was obtained from perfluoroindan and pentafluorobenzene in the presence of SbF5. Compound 1 heated with antimony pentafluoride at 170°C and then treated with water gave a mixture of perfluorinated 9-methylfluorene (5

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