The Chloramine-B hydrate with its cas register number is 304655-80-9. It also can be called as N-Chlorobenzenesulfonamide sodium salt hydrate and the Systematic name about this chemical is sodium chloro(phenylsulfonyl)azanide hydrate.

When you are using this chemical, please be cautious about it as the following:
This chemical is harmful if swallowed and it has possible risk of harm to the unborn child, contact with acids liberates toxic gas, it can causes burns. When you are using it, wear suitable protective clothing, gloves and eye/face protection, keep container tightly closed and do not breathe dust. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice and 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: [Na+].O.O=S(=O)([N-]Cl)c1ccccc1
(2)InChI: InChI=1/C6H5ClNO2S.Na.H2O/c7-8-11(9,10)6-4-2-1-3-5-6;;/h1-5H;;1H2/q-1;+1;
(3)InChIKey: YVICIJMKLANTNN-UHFFFAOYAW
(4)Std. InChI: InChI=1S/C6H5ClNO2S.Na.H2O/c7-8-11(9,10)6-4-2-1-3-5-6;;/h1-5H;;1H2/q-1;+1;
(5)Std. InChIKey: YVICIJMKLANTNN-UHFFFAOYSA-N