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356-77-4

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356-77-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 356-77-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,5 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 356-77:
(5*3)+(4*5)+(3*6)+(2*7)+(1*7)=74
74 % 10 = 4
So 356-77-4 is a valid CAS Registry Number.

356-77-4Relevant articles and documents

Three-step regioselective synthesis of 2,3-difluorohalobenzenes using tetrafluoroethylene and buta-1,3-diene as starting building blocks

Egorov, M. P.,Lipkind, M. B.,Nefedov, O. M.,Volchkov, N. V.

, p. 925 - 932 (2021/06/07)

The gas-phase copyrolysis of tetrafluoroethylene and buta-1,3-diene in a flow tube reactor at 490–510 °C gives 3,3,4,4-tetrafluorocyclohex-1-ene, which is selectively converted to 1-bromo- or 1-chloro-2,3-difluorobenzene via intermediate steps of halogenation and dehydrohalogenation.

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