Moxastine (also known as mephenhydramine) is an antihistamine and anticholinergic.

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Moxastine

Clinical data
AHFS/Drugs.com	International Drug Names
ATC code	none
Identifiers
IUPAC name 2-[1,1-di(phenyl)ethoxy]-N,N-dimethylethanamine
CAS Number	3572-74-5 Y
PubChem CID	19142
ChemSpider	18062 N
UNII	ZSJ254W6SF
CompTox Dashboard (EPA)	DTXSID60189244
ECHA InfoCard	100.020.626
Chemical and physical data
Formula	C18H23NO
Molar mass	269.388 g·mol−1
3D model (JSmol)	Interactive image
SMILES CC(C1=CC=CC=C1)(C2=CC=CC=C2)OCCN(C)C
InChI InChI=1S/C18H23NO/c1-18(20-15-14-19(2)3,16-10-6-4-7-11-16)17-12-8-5-9-13-17/h4-13H,14-15H2,1-3H3 N Key:BBIMHFSPNXQFAH-UHFFFAOYSA-N N
NY (what is this?)  (verify)

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It was developed in Czechoslovakia and sold in hydrochloride form as an antihistamine (Alfadryl).

It is, with 8-chlorotheophylline, a component of cocrystal/salt moxastine teoclate (mephenhydrinate) used as antiemetic (Theadryl; Kinedryl (with caffeine)).