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- Thread starter anthrax
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Stanger5.0
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Stryc-9
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I assume you're asking because you want to know the difference between these two things as they occur in some of the popular fat burners out there....
I'm not a chemist....and I don't know what "nor" means....but I do know that norephedrine is an isomer of ephedrine - this means that they have the same molecular formula (i.e., the same number and types of atoms) but different molecular structures.
As it turns out - norephedrine produces less of a stimulatory effect on the CNS (relative to ephedrine) and this is due to the shape of it's molecular structure - which essentially reduces the ability of the norephedrine molecule to cross the "blood/brain" barrier as effectively as that of ephedrine....
From what I've heard - norephedrine, while thermogenic, is best suited as an appetite suppressant...
hope this helps somewhat
I'm not a chemist....and I don't know what "nor" means....but I do know that norephedrine is an isomer of ephedrine - this means that they have the same molecular formula (i.e., the same number and types of atoms) but different molecular structures.
As it turns out - norephedrine produces less of a stimulatory effect on the CNS (relative to ephedrine) and this is due to the shape of it's molecular structure - which essentially reduces the ability of the norephedrine molecule to cross the "blood/brain" barrier as effectively as that of ephedrine....
From what I've heard - norephedrine, while thermogenic, is best suited as an appetite suppressant...
hope this helps somewhat
Yup, they are isomers of eachother. NOR literally means "NOT", so norephedrine is an unhelpful name for not-ephedrine. There are a total of eight isomeric phenylpropanolamines (in other words optical isomers) possible when the terminal amine is either an N-monomethylamine or a primary amine: (-)ephedrine, (+)ephedrine, (+)pseudoephedrine, (-)pseudoephedrine, (-)norephedrine, (+)norephedrine, (+)cathine, and (-)cathine. They each have different effects in terms of CNS stimulation, anorectic properties and BAT thermogenesis.
