The CAS registry number of 1H-Pyrazole-4-carboxylicacid, 5-chloro-1-methyl-3-(trifluoromethyl)- is 128455-63-0. The IUPAC name is 5-chloro-1-methyl-3-(trifluoromethyl)pyrazole-4-carboxylic acid. In addition, the molecular formula is C₆H₄ClF₃N₂O₂ and the molecular weight is 228.56. What's more, it is a irritating chemiacl and belongs to the classes of Carboxylic Acids; Pyrazoles & Triazoles; Carboxylic Acids; Pyrazoles & Triazoles; Building Blocks; Pyrazole. And it should be stored in a cool and dry place.

Physical properties about 1H-Pyrazole-4-carboxylicacid, 5-chloro-1-methyl-3-(trifluoromethyl)- are: (1)ACD/LogP: 1.15 ; (2)ACD/LogD (pH 5.5): -1.89; (3)ACD/LogD (pH 7.4): -1.99; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 1; (7)ACD/KOC (pH 7.4): 1; (8)#H bond acceptors: 4; (9)#H bond donors: 1; (10)#Freely Rotating Bonds: 1; (11)Polar Surface Area: 44.12 Å²; (12)Index of Refraction: 1.526; (13)Molar Refractivity: 40.91 cm³; (14)Molar Volume: 133.2 cm³; (15)Polarizability: 16.22 ×10^-24cm³; (16)Surface Tension: 39 dyne/cm; (17)Density: 1.71 g/cm³; (18)Flash Point: 125.8 °C; (19)Enthalpy of Vaporization: 55.27 kJ/mol; (20)Boiling Point: 284.4 °C at 760 mmHg; (21)Vapour Pressure: 0.0014 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(O)c1c(nn(c1Cl)C)C(F)(F)F
(2)InChI: InChI=1/C6H4ClF3N2O2/c1-12-4(7)2(5(13)14)3(11-12)6(8,9)10/h1H3,(H,13,14)
(3)InChIKey: IKGVBNQPAJOSFP-UHFFFAOYAQ