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828277-23-2

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828277-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 828277-23-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,2,8,2,7 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 828277-23:
(8*8)+(7*2)+(6*8)+(5*2)+(4*7)+(3*7)+(2*2)+(1*3)=192
192 % 10 = 2
So 828277-23-2 is a valid CAS Registry Number.

828277-23-2Downstream Products

828277-23-2Relevant articles and documents

Stereoselective synthesis of morphine fragments trans- and cis-octahydro-1H-benzo[4,5]furo[3,2-e]isoquinolines

Hsin, Ling-Wei,Chang, Li-Te,Chen, Chien-Wei,Hsu, Chia-Huei,Chen, Hung-Wei

, p. 513 - 520 (2005)

A stereoselective synthesis of the ACNO partial structures of morphine has been developed. Palladium-catalyzed cyclization of carbamate 2 provided the tetracyclic (ACNO) 3-ethoxycarbonyl-9-methoxy-2,3,5,6,7,7a-hexahydro-1H- benzofuro[3,2-e]isoquinoline (14); while treatment of 5-(2-bromo-6- methoxyphenoxy)-2-methyl-1,2,3,4,5,6,7,8-octahydroisoquinoline (8) under the same reaction condition gave 8a-(2-hydroxy-3-methoxyphenyl)-1,2,3,4,6,7,8,8a- octahydroisoquinoline (11) via an unusual Claisen rearrangement. 9-Methoxy-3-methyl-2,3,5,6,7,7a-hexahydro-1H-benzofuro[3,2-e]isoquinoline (7) was successfully transformed to trans-octahydroisoquinoline 3 and cis-octahydroisoquinoline 4 via catalytical hydrogenation over PtO2 and chemical reduction with acidic NaBH4, respectively.

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