Norpseudoephedrine
Norpseudoephedrine may refer to: * Cathine (or D-norpseudoephedrine), the (+)-enantiomer and most widely known form of the compound * L-Norpseudoephedrine, the (-)-enantiomer of the compound An article for the racemic mixture In chemistry, a racemic mixture, or racemate (), is one that has equal amounts of left- and right-handed enantiomers of a chiral molecule or salt. Racemic mixtures are rare in nature, but many compounds are produced industrially as racemates. ...

Cathine
-norpseudoephedrine, also known as cathine and (+)-norpseudoephedrine, is a psychoactive drug of the phenethylamine and amphetamine chemical classes which acts as a stimulant. Along with cathinone, it is found naturally in '' Catha edulis'' (khat), and contributes to its overall effects. It has approximately 7-10% the potency of amphetamine. Pharmacology Like amphetamines, cathinone and ephedrine, cathine acts as a norepinephrine releasing agent (NRA). It also acts as a dopamine releasing agent (DRA). Chemistry Cathine is one of the four stereoisomers of phenylpropanolamine (PPA). Regulation The World Anti-Doping Agency's list of prohibited substances (used for the Olympic Games among other athletic events) bans cathine in concentrations of over 5 micrograms per milliliter in urine. Cathine is a Schedule III drug under the Convention on Psychotropic Substances. In the United States, it is classified as a Schedule IV controlled substance. In Australia, Cathine is offi ...
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L-Norpseudoephedrine
-Norpseudoephedrine, or (−)-norpseudoephedrine, is a psychostimulant drug of the amphetamine family. It is one of the four optical isomers of phenylpropanolamine, the other three being cathine ((+)-norpseudoephedrine), (−)-norephedrine, and (+)-norephedrine; as well as one of the two enantiomers of norpseudoephedrine (the other being cathine). Similarly to cathine, -norpseudoephedrine acts as a releasing agent of norepinephrine ( EC50 = 30 nM) and to a lesser extent of dopamine (EC50 = 294 nM). Due to the 10-fold difference in its potency for inducing the release of the two neurotransmitters however, -norpseudoephedrine could be called a modestly selective or preferential norepinephrine releasing agent, similarly to related compounds like ephedrine and pseudoephedrine. See also * Cathine * Phenylpropanolamine * Cathinone * Pseudoephedrine * Ephedrine Ephedrine is a central nervous system (CNS) stimulant that is often used to prevent low blood pr ...
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