Editing Azapirone (section)

== Chemistry ==

[[Buspirone]] was originally classified as an [[azaspirodecanedione]], shortened to azapirone or azaspirone due to the fact that its [[chemical structure]] contained this [[functional group|moiety]], and other drugs with similar structures were labeled as such as well. However, despite all being called azapirones, not all of them actually contain the azapirodecanedione component, and most in fact do not or contain a variation of it. Additionally, many azapirones are also [[pyrimidinylpiperazine]]s, though again this does not apply to them all.

Drugs classed as azapirones can be identified by their -''spirone'' or -''pirone'' suffix.<ref name="urlThe use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances">{{cite web | url = http://libdoc.who.int/hq/2004/who_edm_qsm_2004.5.pdf | title = The use of stems in the selection of International Nonproprietary Names (INN) for pharmaceutical substances | year = 2004 | access-date = 1 April 2010 | archive-url = https://web.archive.org/web/20110722013129/http://libdoc.who.int/hq/2004/who_edm_qsm_2004.5.pdf | archive-date = 2011-07-22 | url-status = dead }}</ref>