Title: Ethamsylate
CAS Registry Number: 2624-44-4
CAS Name: 2,5-Dihydroxybenzenesulfonic acid compd with N-ethylethanamine
Additional Names: diethylammonium 2,5-dihydroxybenzenesulfonate; 1-hydroxy-4-oxo-2,5-cyclohexadiene-1-sulfonic acid compd with diethylamine; diethylammonium cyclohexadien-4-ol-1-one-4-sulfonate; cyclonamine; etamsylate
Manufacturers' Codes: MD-141; E-141
Trademarks: Aglumin; Altodor (Synthelabo); Biosinon (Farmakhim); Dicynene (Lorex); Dicynone (OM)
Molecular Formula: C10H17NO5S
Molecular Weight: 263.31
Percent Composition: C 45.61%, H 6.51%, N 5.32%, O 30.38%, S 12.18%
Literature References: Prepn: GB 895709 (1962 to Labs. OM); ES 279303 (1962 to Labs. Esteve), C.A. 60, 1652g (1964). Pharmacology: Demars, Med. Exp. 4, 173 (1961); Huguet et al., Therapie 24, 429 (1969). Toxicity: Esteve et al., Therapie 15, 110 (1960).
Properties: Crystals from ethanol, mp 125°. LD50 i.v. in mice, rats: 800, 1350 mg/kg (Esteve).
Melting point: mp 125°
Toxicity data: LD50 i.v. in mice, rats: 800, 1350 mg/kg (Esteve)
Therap-Cat: Hemostatic.
Keywords: Hemostatic.
Ethanearsonic Acid Ethanethiol Ethanolamine Ethaverine Ethebenecid

Etamsylate ball-and-stick animation.gif
Systematic (IUPAC) name
2,5-dihydroxybenzenesulfonic acid; N-ethylethanamine
Clinical data
AHFS/ International Drug Names
Legal status  ?
ATC code B02BX01
PubChem CID 17506
KEGG D01282 YesY
Chemical data
Formula C10H17NO5S 
Mol. mass 263.31068 g/mol
 YesY (what is this?)  (verify)

Ethamsylate (Dicynene/Dicynone) is a haemostatic drug.[1][2]

It is believed to work by increasing capillary endothelial resistance and promoting platelet adhesion.

It also inhibits biosynthesis and action of those prostaglandins which cause platelet disaggregation, vasodilation and increased capillary permeability.[3]