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5649-96-7

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5649-96-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5649-96-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,6,4 and 9 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 5649-96:
(6*5)+(5*6)+(4*4)+(3*9)+(2*9)+(1*6)=127
127 % 10 = 7
So 5649-96-7 is a valid CAS Registry Number.

5649-96-7Relevant articles and documents

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Cram,Cordon

, p. 1810 (1955)

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Arenes Disubstituted with Primary Alkyl Groups from Xylylene Dianions

Bates, Robert B.,Ogle, Craig A.

, p. 3949 - 3952 (2007/10/02)

Xylenes were converted into dianions 1.Reaction of dianions 1 with dialkyl sulfates gave symmetrical dialkylbenzenes 2 (R = R'), while methyl iodide caused oxidative coupling followed by alkylation to give 8.Unsymmetrical dialkylbenzenes 2 (R =/= R') were made by an indirect route involving monoanions 9 and 11.Reactions of dianions 1 with dihalides gave cyclophanes o-3 (n = 5,6,9), m-3 (n = 8-10), and p-3 (n = 9-11) and cyclophanes o-4 (n = 2,5,7,9) and m-4 (n = 2,6,7).Dianion 5 from 2,6-lutidine was used to prepare nitrogen analogues of 2 (R = R') and m-3 (n = 8-10).

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