With the CAS registry number 4498-67-3, the IUPAC name of Indazole-3-carboxylic acid is 1H-indazole-3-carboxylic acid. The product's categories are Pharmaceutical Intermediates; Acids and Derivatives; Heterocycles; Indoles and Derivatives; Pharmacetical; Carboxylic Acids; Organic Acids; Indazoles; Indole Derivatives; Carboxylic Acids; Fused Ring Systems; Building Blocks; Heterocyclic Building Blocks. It is yellow crystal which is stable under normal temperature and pressure. Additioanlly, this chemical should be sealed in the container and stored in the cool and dry place.

The other characteristics of this product can be summarized as: (1).ACD/LogP: 1.50; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.38; (4)ACD/LogD (pH 7.4): -1.57; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 2.06; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 4; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 1; (12)Index of Refraction: 1.743; (13)Molar Refractivity: 43.54 cm³; (14)Molar Volume: 107.6 cm³; (15)Polarizability: 17.26×10^-24 cm³; (16)Surface Tension: 85.2 dyne/cm; (17)Enthalpy of Vaporization: 73.93 kJ/mol; (18)Vapour Pressure: 1.18E-08 mmHg at 25°C; (19)Rotatable Bond Count: 1; (20)Tautomer Count: 4; (21)Exact Mass: 162.042927; (22)MonoIsotopic Mass: 162.042927; (23)Topological Polar Surface Area: 66; (24)Heavy Atom Count: 12; (25)Complexity: 196.

Preparation of Indazole-3-carboxylic acid: It can be obtained by 1-acetyl-1H-indazole-3-carboxylic acid ethyl ester. This reaction needs reagents NaOH and water by heating. The reaction time is 1.5 hours. The yield is 98%.

Uses of Indazole-3-carboxylic acid: It is used in organic synthesis. For example: it can react with 1,4-dimethyl-[1,4]diazepan-6-ylamine to get 1H-indazole-3-carboxylic acid (1,4-dimethyl-[1,4]diazepan-6-yl)-amide. This reaction needs reagent 1-ethyl-3-<3-(dimethylamino)propyl>carbodiimide hydrochloride and solvent CH₂Cl₂ at ambient temperature. The reaction time is 5 hours. The yield is 21%.

When you are using this chemical, please be cautious about it as the following:
It is not only harmful if swallowed, but also irritating to eyes, respiratory system and skin. So people should not breathe dust. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection.

People can use the following data to convert to the molecule structure. 
1. SMILES:O=C(O)c2nnc1ccccc12
2. InChI:InChI=1/C8H6N2O2/c11-8(12)7-5-3-1-2-4-6(5)9-10-7/h1-4H,(H,9,10)(H,11,12) 
3. InChIKey:BHXVYTQDWMQVBI-UHFFFAOYAD