Title: Doxapram
CAS Registry Number: 309-29-5
CAS Name: 1-Ethyl-4-[2-(4-morpholinyl)ethyl]-3,3-diphenyl-2-pyrrolidinone
Molecular Formula: C24H30N2O2
Molecular Weight: 378.51
Percent Composition: C 76.16%, H 7.99%, N 7.40%, O 8.45%
Literature References: Prepn: C. D. Lunsford, A. D. Cale, BE 613734; eidem, US 3192206 (1962, 1965 both to A. H. Robins); Lunsford et al., J. Med. Chem. 7, 302 (1964). Clinical comparison with mepixanox in chronic bronchopulmonary disease: M. Parziale et al., G. Ital. Mal. Torace 38, 323 (1984). Toxicity data: E. I. Goldenthal, Toxicol. Appl. Pharmacol. 18, 185 (1971).
Derivative Type: Hydrochloride monohydrate
CAS Registry Number: 7081-53-0
Manufacturers' Codes: AHR-619
Trademarks: Dopram (Robins); Doxapril (Erba); Stimulexin (Robins)
Molecular Formula: C24H30N2O2.HCl.H2O
Molecular Weight: 432.98
Percent Composition: C 66.58%, H 7.68%, N 6.47%, O 11.09%, Cl 8.19%
Properties: Crystals from isopropyl ether, mp 217-219°. Bitter taste. Sol in water; sparingly sol in alc, slightly sol in chloroform. LD50 orally in rats: 261 mg/kg (Goldenthal).
Melting point: mp 217-219°
Toxicity data: LD50 orally in rats: 261 mg/kg (Goldenthal)
Derivative Type: Benzoate
Molecular Formula: C31H36N2O4
Molecular Weight: 500.63
Percent Composition: C 74.37%, H 7.25%, N 5.60%, O 12.78%
Properties: Crystals, mp 123-124°.
Melting point: mp 123-124°
Therap-Cat: Respiratory stimulant.
Therap-Cat-Vet: Respiratory stimulant.
Keywords: Respiratory Stimulant.
Doxazosin Doxefazepam Doxenitoin Doxepin Doxercalciferol

Systematic (IUPAC) name
1-ethyl-4- (2-morpholin-4-ylethyl)- 3,3-diphenyl-pyrrolidin-2-one
Clinical data
Legal status Rx only
Routes Intravenous
CAS number 309-29-5 YesY
ATC code R07AB01
PubChem CID 3156
DrugBank DB00561
ChemSpider 3044 YesY
UNII 94F3830Q73 YesY
KEGG D07873 YesY
ChEBI CHEBI:681848 YesY
Chemical data
Formula C24H30N2O2 
Mol. mass 378.507 g/mol
 YesY (what is this?)  (verify)

Doxapram hydrochloride (marketed as Dopram, Stimulex or Respiram) is a respiratory stimulant. Administered intravenously, doxapram stimulates an increase in tidal volume, and respiratory rate.