Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2005-06-10
2008-12-02
Dentz, Bernard (Department: 1625)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C514S317000, C546S238000, C546S233000
Reexamination Certificate
active
07459467
ABSTRACT:
The present invention discloses selective and complete reduction of pyridine ring in a biaryl system comprising ∝-substituted or non-substituted benzene ring and relates more specifically, not exclusively, for the manufacture of methylphenidate, which is used for treatment of Attention Deficit Hyperactive Disorder (ADHD) and also acts as central nervous system stimulant, by using palladium/C in a solvent such as C1-C4 alcohols in presence of molar quantities of organic and/or inorganic acids.
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Kumar Ashok
Mahale Ganesh Devidas
Patil Swapnali Hemant
Sawant Uttamrao Arjunrao
Singh Dharmendra
Blank Rome LLP
Dentz Bernard
Gallis David E
IPCA Laboratories Ltd.
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