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805236-74-2

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805236-74-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 805236-74-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,5,2,3 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 805236-74:
(8*8)+(7*0)+(6*5)+(5*2)+(4*3)+(3*6)+(2*7)+(1*4)=152
152 % 10 = 2
So 805236-74-2 is a valid CAS Registry Number.

805236-74-2Relevant articles and documents

A new industrial process for oxcarbazepine

Fuenfschilling, Peter C.,Zaugg, Werner,Beutler, Ulrich,Kaufmann, Daniel,Lohse, Olivier,Mutz, Jean-Paul,Onken, Ulrich,Reber, Jean-Louis,Shenton, David

, p. 272 - 277 (2012/12/24)

A novel industrial process for the antiepileptic drug oxcarbazepine 1 has been developed. Unlike the old process, the new process is free from halogenated solvents and can be performed in standard production equipment. It starts from commercially available 1,3-dihydro-1-phenyl-2H-indol-2-one 10. In the key step, an electrophilic ring closure reaction of 2-[(methoxycarbonyl)phenylamino] benzeneacetic acid 5 to 10,11-dihydro-10-oxo-5H-dibenz[b,f]azepine-5-carboxylic acid methyl ester 6 in poly phosphoric acid was applied. For the manufacture of 5, a highly efficient process using a dianion strategy was developed.

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