The Methanesulfinic acid,hydroxy- (8CI,9CI), with the CAS registry number of 79-25-4, is also known as Formaldehydesulfoxylate. Its EINECS registry number is 201-189-4. Its molecular formula is CH₄O₃S and molecular weight is 96.10566. What's more, its IUPAC name is Hydroxymethanesulfinic acid. It is the antidote for mercury poisoning.

Physical properties about the Methanesulfinic acid,hydroxy- (8CI,9CI) are: (1)ACD/LogP: -2.26; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -4.74; (4)ACD/LogD (pH 7.4): -5.71; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 3; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 54.74 Å²; (13)Index of Refraction: 1.674; (14)Molar Refractivity: 18.61 cm³; (15)Molar Volume: 49.5 cm³; (16)Surface Tension: 160.2 dyne/cm; (17)Density: 1.939 g/cm³; (18)Flash Point: 223.8 °C; (19)Enthalpy of Vaporization: 81.3 kJ/mol; (20)Boiling Point: 446.4 °C at 760 mmHg; (21)Vapour Pressure: 7.6E-10 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1) SMILES: O=S(O)CO
(2) InChI: InChI=1/CH4O3S/c2-1-5(3)4/h2H,1H2,(H,3,4)
(3) InChIKey: SBGKURINHGJRFN-UHFFFAOYAL