Formoterol

Formoterol
	Formoterol (top),; (R,R)-(−)-formoterol (center) and; (S,S)-(+)-formoterol (bottom)
Clinical data
Trade names	Oxeze, Foradil, others
AHFS/Drugs.com	Monograph
License data	EU EMA: by formoterol fumarate dihydrate;
Pregnancy; category	AU: B3;
Routes of; administration	Inhalation (capsules for oral inhalation, DPI, MDI)
ATC code	R03AC13 (WHO) R03CC15 (WHO);
Legal status
Legal status	AU: S4 (Prescription only); UK: POM (Prescription only); US: ℞-only; EU: Rx-only; In general: ℞ (Prescription only);
Pharmacokinetic data
Protein binding	61% to 64%
Metabolism	Liver demethylation and glucuronidation (CYP2D6, CYP2C19, CYP2C9 and CYP2A6 involved)
Elimination half-life	10 h
Excretion	Kidney and fecal
Identifiers
	IUPAC name (RR,SS)-N-[2-hydroxy-5-[1-hydroxy-2-[1-(4-methoxyphenyl) propan-2-ylamino]ethyl] phenyl]formamide;
CAS Number	73573-87-2 ;
PubChem CID	3083544; 3034756;
IUPHAR/BPS	3465;
DrugBank	DB00983 ;
ChemSpider	2340731 ;
UNII	5ZZ84GCW8B;
KEGG	D07990 ;
ChEBI	CHEBI:408174 ;
ChEMBL	ChEMBL1363 ;
CompTox Dashboard (EPA)	DTXSID1023077 ;
ECHA InfoCard	100.131.654
Chemical and physical data
Formula	C19H24N2O4
Molar mass	344.411 g·mol−1
3D model (JSmol)	Interactive image;
Chirality	Racemic mixture
	SMILES O=CNc1cc(ccc1O)[C@@H](O)CN[C@H](C)Cc2ccc(OC)cc2;
	InChI InChI=1S/C19H24N2O4/c1-13(9-14-3-6-16(25-2)7-4-14)20-11-19(24)15-5-8-18(23)17(10-15)21-12-22/h3-8,10,12-13,19-20,23-24H,9,11H2,1-2H3,(H,21,22)/t13-,19+/m1/s1 ; Key:BPZSYCZIITTYBL-YJYMSZOUSA-N ;
	(verify)

Formoterol, also known as eformoterol, is a long-acting β₂ agonist (LABA) used as a bronchodilator in the management of asthma and chronic obstructive pulmonary disease (COPD). Formoterol has an extended duration of action (up to 12 h) compared to short-acting β₂ agonists such as salbutamol (albuterol), which are effective for 4 h to 6 h. Formoterol has a relatively rapid onset of action compared to other LABAs, and is effective within 2-3 minutes. The 2022 Global Initiative for Asthma report recommends a combination formoterol/inhaled corticosteroid inhaler as both a preventer and reliever treatment for asthma in adults. In children, a short-actingβ₂ agonist (e.g., salbutamol) is still recommended.

It was patented in 1972 and came into medical use in 1998. It is available as a generic medication. It is also marketed in the combination formulations budesonide/formoterol and mometasone/formoterol.

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