The Propanoic acid,2-methyl-, potassium salt (1:1), with the CAS registry number 19455-20-0, is also known as Potassium isobutyrate. Its EINECS registry number is 243-077-8. This chemical's molecular formula is C₄H₇KO₂ and molecular weight is 126.2. What's more, its systematic name and its IUPAC name are the same which is called Potassium 2-methylpropanoate.

Physical properties about Propanoic acid,2-methyl-, potassium salt (1:1): (1)ACD/LogP: 0.59; (2)# of Rule of 5 Violations: 0 ; (3)ACD/LogD (pH 5.5): -0.15; (4)ACD/LogD (pH 7.4): -1.93 ; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1 ; (7)ACD/KOC (pH 5.5): 9.12; (8)ACD/KOC (pH 7.4): 1 ; (9)#H bond acceptors: 2; (10)#H bond donors: 1 ; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 37.3 Å²; (13)Flash Point: 58.1 °C; (14)Enthalpy of Vaporization: 43.23 kJ/mol ; (15)Boiling Point: 155.2 °C at 760 mmHg; (16)Vapour Pressure: 1.63 mmHg at 25 °C; (17)Density: 0.983g/cm³.

You can still convert the following datas into molecular structure:
(1) SMILES: [K+].[O-]C(=O)C(C)C
(2) InChI: InChI=1/C4H8O2.K/c1-3(2)4(5)6;/h3H,1-2H3,(H,5,6);/q;+1/p-1
(3) InChIKey: LBOHISOWGKIIKX-REWHXWOFAP