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252936-43-9

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252936-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 252936-43-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,2,9,3 and 6 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 252936-43:
(8*2)+(7*5)+(6*2)+(5*9)+(4*3)+(3*6)+(2*4)+(1*3)=149
149 % 10 = 9
So 252936-43-9 is a valid CAS Registry Number.

252936-43-9Relevant articles and documents

Two-step regioselective synthesis of 1,2-difluorobenzenes from chlorotrifluoroethylene and buta-l,3-dienes

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

, p. 68 - 75 (2020)

The gas-phase copyrolysis of chlorotrifluoroethylene with buta-1,3-diene, penta-1,3-diene, or isoprene in a flow reactor at 440–480°C gave 4-chloro-4,5,5-trifluorocyclohex-1-enes. The latter treated with aqueous KOH under condition of phase-transfer catalysis were selectively converted into 1,2-difluorobenzene, 2,3-difluorotoluene, or 3,4-difluorotoluene.

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