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137823-74-6

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137823-74-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137823-74-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,8,2 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 137823-74:
(8*1)+(7*3)+(6*7)+(5*8)+(4*2)+(3*3)+(2*7)+(1*4)=146
146 % 10 = 6
So 137823-74-6 is a valid CAS Registry Number.

137823-74-6Relevant articles and documents

Acid-catalyzed Reactions of Aromatic Hydrocarbons with Alkanes and Cycloalkanes. X. Alkylations with Cyclohexane

Miethchen, Ralf,Steege, Sigrid,Kroeger, Carl-Friedrich

, p. 823 - 834 (2007/10/02)

The complex reaction mixtures of the nonconventional alkylation of benzene with cyclohexane in the presence of Lewis/proton acids and promotors were investigated by gas-liquid chromatography and mass spectrometry.Four representative groups of hydrocarbons were found including cycloalkylbenzenes, substituted indanes or tetralines (C12H16), C1-C6-alkylbenzenes and isomeric biscycloalkyls (C12H22).Their formation is interpreted as a competition between alkylation, (without or with isomerization), ringfission with cycloalkylation or fragmentation, and self-alkylation; phenylcycloalkylcations and phenylalkylcations are the intermediates.

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