The CAS register number of 1H-Indazole,3-chloro-5-nitro- is 4812-45-7. It also can be called as 3-Chloro-5-nitroindazole and the IUPAC name about this chemical is 3-chloro-5-nitro-2H-indazole. The molecular formula about this chemical is C₇H₄ClN₃O₂ and the molecular weight is 197.58. This chemical is irritant. It may cause inflammation to the skin or other mucous membranes.

Physical properties about 1H-Indazole,3-chloro-5-nitro- are: (1)ACD/LogP: 2.01; (2)ACD/LogD (pH 5.5): 2.01; (3)ACD/LogD (pH 7.4): 2.01; (4)ACD/BCF (pH 5.5): 19.99; (5)ACD/BCF (pH 7.4): 19.88; (6)ACD/KOC (pH 5.5): 297.01; (7)ACD/KOC (pH 7.4): 295.35; (8)#H bond acceptors: 5; (9)#H bond donors: 1; (10)#Freely Rotating Bonds: 1; (11)Polar Surface Area: 63.64 Å²; (12)Index of Refraction: 1.742; (13)Molar Refractivity: 48.06 cm³; (14)Molar Volume: 118.8 cm³; (15)Polarizability: 19.05x10^-24cm³; (16)Surface Tension: 80.5 dyne/cm; (17)Density: 1.661 g/cm³; (18)Flash Point: 95.7 °C; (19)Enthalpy of Vaporization: 47.14 kJ/mol; (20)Boiling Point: 234.7 °C at 760 mmHg; (21)Vapour Pressure: 0.0522 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1)SMILES: [O-][N+](=O)c2cc1c(nnc1Cl)cc2
(2)InChI: InChI=1/C7H4ClN3O2/c8-7-5-3-4(11(12)13)1-2-6(5)9-10-7/h1-3H,(H,9,10)
(3)InChIKey: UOWPRWCAMGTPHI-UHFFFAOYAQ
(4)Std. InChI: InChI=1S/C7H4ClN3O2/c8-7-5-3-4(11(12)13)1-2-6(5)9-10-7/h1-3H,(H,9,10)
(5)Std. InChIKey: UOWPRWCAMGTPHI-UHFFFAOYSA-N

The toxicity data is as follows: