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28888-46-2

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28888-46-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28888-46-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,8,8 and 8 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 28888-46:
(7*2)+(6*8)+(5*8)+(4*8)+(3*8)+(2*4)+(1*6)=172
172 % 10 = 2
So 28888-46-2 is a valid CAS Registry Number.

28888-46-2Downstream Products

28888-46-2Relevant articles and documents

Synthesis of (-)-pseudotabersonine, (-)-pseudovincadifformine, and (+)-coronaridine enabled by photoredox catalysis in flow

Beatty, Joel W.,Stephenson, Corey R. J.

, p. 10270 - 10273 (2014/08/05)

Natural product modification with photoredox catalysis allows for mild, chemoselective access to a wide array of related structures in complex areas of chemical space, providing the possibility for novel structural motifs as well as useful quantities of less abundant congeners. While amine additives have been used extensively as stoichiometric electron donors for photocatalysis, the controlled modification of amine substrates through single-electron oxidation is ideal for the synthesis and modification of alkaloids. Here, we report the conversion of the amine (+)-catharanthine into the natural products (-)-pseudotabersonine, (-)-pseudovincadifformine, and (+)-coronaridine utilizing visible light photoredox catalysis.

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