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Arsenic trioxide
	Arsenic trioxide As3+ O2−
Clinical data
Trade names	Trisenox, others
Other names	Arsenic(III) oxide,; Arsenic sesquioxide,; Arseneous oxide,; Ratsbane,; Arseneous anhydride,; White arsenic,; Aqua Tofani
AHFS/Drugs.com	Monograph
Pregnancy; category	AU: X (High risk); ;
Routes of; administration	Intravenous
Drug class	Antineoplastic agent
ATC code	L01XX27 (WHO) ;
Pharmacokinetic data
Protein binding	75%
Excretion	Urine
Identifiers
	IUPAC name Diarsenic trioxide;
CAS Number	1327-53-3 ;
PubChem CID	261004;
DrugBank	DB01169;
ChemSpider	452539;
UNII	S7V92P67HO;
KEGG	C13619;
ChEMBL	ChEMBL1200978;
Chemical and physical data
Formula	As2O3
Molar mass	197.841 g·mol−1
3D model (JSmol)	Interactive image;
Density	3.74 g/cm3
Melting point	312.2 °C (594.0 °F)
Boiling point	465 °C (869 °F)
Solubility in water	20 g/L (25 °C); see text
	SMILES O1[As]3O[As]2O[As](O3)O[As]1O2;
	InChI InChI=1S/As2O3/c3-1-4-2(3)5-1; ; Key:GOLCXWYRSKYTSP-UHFFFAOYSA-N;

^ Shakhashiri, B. Z. "Chemical of the Week: Arsenic". University of Wisconsin-Madison Chemistry Dept. Archived from the original on 2008-08-02. Retrieved 2008-08-03.