
1) French invention
Found on
https://www.crosswordclues.com/clue/piperoxan

Piperoxan, also known as benodaine, is a drug which was the very first antihistamine to be discovered. This compound, derived from benzodioxan, was prepared in the early 1930s by Daniel Bovet and Ernest Fourneau at the Pasteur Institute in France. Formerly investigated by Fourneau as an α-adrenergic-blocking agent, they demonstrated that it also ...
Found on
http://en.wikipedia.org/wiki/Piperoxan

<chemical> A benzodioxane alpha-adrenergic blocking agent with considerable stimulatory action. It has been used to diagnose pheochromocytoma and as an antihypertensive agent. ... Pharmacological action: adrenergic alpha-antagonists, antihypertensive agents, sympatholytics. ... Chemical name: Piperidine, 1-((2,3-dihydro-1,4-benzodioxin-2-yl)m...
Found on
http://www.encyclo.co.uk/local/20973
No exact match found.