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223685-14-1

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223685-14-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223685-14-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,6,8 and 5 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 223685-14:
(8*2)+(7*2)+(6*3)+(5*6)+(4*8)+(3*5)+(2*1)+(1*4)=131
131 % 10 = 1
So 223685-14-1 is a valid CAS Registry Number.

223685-14-1Downstream Products

223685-14-1Relevant articles and documents

Molecular modification of anpirtoline, a non-opioid centrally acting analgesic

Radl, Stanislav,Hafner, Wieland,Hezky, Petr,Krejci, Ivan,Proska, Jan,Taimr, Jan

, p. 363 - 376 (2007/10/03)

Molecular modification of anpirtoline (2a) is described. Several methods of preparation of 4-[(3-chlorophenyl)sulfanyl]-1-methylpiperidine (3a) and its demethylation led to the deazaanpirtoline (3c). Nucleophilic substitution of piperidine-4-thiole with 2-chloro-4-nitropyridine, 2,4-dichloro-6-methylpyridine, and 3,6-dichloropyridazine led to 2-chloro-4-(piperidin-4-ylsulfanyl)pyridine (6), 4-chloro-6-methyl-2-(piperidin-4-ylsulfanyl)pyridine (7), and 3-chloro-6-(piperidin-4-ylsulfanyl)pyridazine (8), respectively. 2-Chloro-6-(pyridin-4-ylsulfanyl)-pyridine (10) and 4-[(2-chloropyridin-6-yl)sulfanyl]quinoline (11) were obtained from sodium 2-chloropyridine-6-thiolate. Homoanpirtoline analogs with methylene group inserted between the pyridine moiety and the sulfur atom (compound 12b) as well as between the sulfur atom and the piperidine ring (compound 13b) were also prepared.

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