Tartaric acid is found in many plants such as grapes, tamarinds, pineapples, mulberries and so on. Wine lees (called mud in the US), the sediment collected during the fermentation of grapes, contains potassium bitartrate (potassium hydrogen tartrate) as its major component. L-(+)-tartaric acid is an enantiomer of tartaric acid. Twenty five years before the tetrahedral structure for carbon was proposed in 1874 to explain the optical activity and other properties of organic compounds, Louis Pasteur discovered the existence of enantiomerism in tartaric acid. L-(+)-tartaric acid is widely used in food and beverage as acidity regulator with E number E334.

Pentolinium (brand name Ansolysen) is a ganglionic cholinergic antagonist, acting on alpha 3 beta 4 neuronal nicotinic acetylcholine receptors (nAChRs). It was used as an antihypertensive drug during surgery or to control hypertensive crises, but Ansolysen was discontinued. Pentolinium inhibits release of adrenaline and noradrenaline from adrenergic nerves.

Pentolinium (brand name Ansolysen) is a ganglionic cholinergic antagonist, acting on alpha 3 beta 4 neuronal nicotinic acetylcholine receptors (nAChRs). It was used as an antihypertensive drug during surgery or to control hypertensive crises, but Ansolysen was discontinued. Pentolinium inhibits release of adrenaline and noradrenaline from adrenergic nerves.