The Barium selenite, with CAS registry number 13718-59-7, has the systematic name of barium selenite. And its IUPAC name is barium(2+) selenite. And its system generated number is 0013718597. The chemical formula of this chemical is BaSeO₃. What's more, its EINECS is 237-280-0.

Physical properties about this chemical are: (1)#H bond acceptors: 3; (2)#H bond donors: 2; (3)#Freely Rotating Bonds: 0; (4)Polar Surface Area: 57.53 Å².

When you are using this chemical, please be cautious about it as the following:
The Barium selenite is toxic by inhalation, in contact with skin and if swallowed. And do not breathe dust. When use it, wear suitable protective clothing, gloves and eye/face protection. If contact with eyes, rinse immediately with plenty of water and seek medical advice. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

You can still convert the following datas into molecular structure:
(1)SMILES: [Ba+2].[O-][Se]([O-])=O
(2)InChI: InChI=1/Ba.H2O3Se/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2
(3)InChIKey: VQKDPABSEYUERS-NUQVWONBAM
(4)Std. InChI: InChI=1S/Ba.H2O3Se/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2
(5)Std. InChIKey: VQKDPABSEYUERS-UHFFFAOYSA-L