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173666-23-4

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173666-23-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 173666-23-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,3,6,6 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 173666-23:
(8*1)+(7*7)+(6*3)+(5*6)+(4*6)+(3*6)+(2*2)+(1*3)=154
154 % 10 = 4
So 173666-23-4 is a valid CAS Registry Number.

173666-23-4Relevant articles and documents

Substituted N-Phenyl-1-(4-Pyridinyl)-1H-Pyrazol-3-Amines

-

Page/Page column 16, (2012/07/14)

The present invention relates to N-phenyl-1-(4-pyridinyl)-1H-pyrazol-3-amine derivatives and pharmaceutically acceptable salts thereof, processes for preparing them, pharmaceutical compositions containing them and their use in therapy, according to formula (I) Wherein R1, R2, R3, R4, R5, R6 have the meaning defined in the claims. The invention particularly relates to positive allosteric modulators of nicotinic acetylcholine receptors, such positive allosteric modulator having the capability to increase the efficacy of nicotinic receptor agonists.

Synthesis of 4-substituted 3,3-difluoropiperidines

Surmont, Riccardo,Verniest, Guido,Thuring, Jan Willem,Macdonald, Gregor,Deroose, Frederik,De Kimpe, Norbert

supporting information; experimental part, p. 929 - 932 (2010/07/02)

Synthetic strategies toward 4-substituted 3,3-difluoropiperidines were evaluated. 4-Alkoxymethyl- and 4-aryloxymethyl-3,3-difluoropiperidines were synthesized via 1,4-addition of ethyl bromodifluoroacetate to 3-substituted acrylonitriles in the presence o

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