Norepinephrine is a Catecholamine. The chemical classification of norepinephrine is Catecholamines. Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. Norepinephrine is also found in plants and is used pharmacologically as a sympathomimetic. l-Norepinephrine is a naturally occurring catecholamine hormone that functions as a neurotransmitter in the sympathetic nervous system. Norepinephrine directly stimulates adrenergic receptors. Stimulation of alpha-adrenergic receptors causes vasoconstriction of the radial smooth muscle of the iris, arteries, arterioles, veins, urinary bladder, and the sphincter of the gastrointestinal tract. Stimulation of beta-1 adrenergic receptors causes an increase in myocardial contractility, heart rate, automaticity, and atrioventricular (AV) conduction while stimulation of beta-2 adrenergic receptors causes bronchiolar and vascular smooth muscle dilatation.
Norepinephrine Pharmaceutical Powder Purity 99%
Noradrenalina Noradrenaline Na Noradrenalin
Noradrenline Ne Levarterenol Arterenol
Chemical Name: Norepinephrine
Molecular Formula: C8H11NO3
Formula Weight: 169.18
CAS No.: 51-41-2
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