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78508-40-4

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78508-40-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78508-40-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,5,0 and 8 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 78508-40:
(7*7)+(6*8)+(5*5)+(4*0)+(3*8)+(2*4)+(1*0)=154
154 % 10 = 4
So 78508-40-4 is a valid CAS Registry Number.

78508-40-4Relevant articles and documents

Reaction of Epoxides with Triphenylphosphine-Thiocyanogen (TPPT): Preparation of α-Thiocyanatovinyl Ketones, vis-Dithiocyanates, and vic-Dithiocyanatohydrins

Tamura, Yasumitsu,Kawasaki, Tomomi,Yasuda, Hitoshi,Gohda, Noriko,Kita, Yasuyuki

, p. 1577 - 1581 (2007/10/02)

A number of epoxides smoothly react with TPPT under mild conditions to give α-thiocyanatovinyl ketones, vic-dithiocyanates, or vic-thiocyanatohydrins, depending on the structures of the epoxides used.The reactions proceed site- and stereo-specifically, to give α-thiocyanatovinyl ketones from αβ-epoxyketones, threo-dithiocyanate from trans-epoxide, erythro-dithiocyanate from cis-epoxide, and vic-thiocyanatohydrins from 1,1-disubstituted or fused epoxides, respectively.A possible mechanism for these reactions is put forward.

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