1H-indazole-7-carboxylic acid
- CAS No.
- 677304-69-7
- Chemical Name:
- 1H-indazole-7-carboxylic acid
- Synonyms
- 7-Carboxy-1H-indazole;CgH6N2O2;Niraparib Intermediate4;7-INDAZOLE CARBOXYLIC ACID;7-INDAZOLE CARBOXYLLIC ACID;1H-Indazole-7-carboxylic aid;1H-Indazol-7-carboxylic acid;1H-INDAZOLE-7-CARBOXYLIC ACID;7-(1H)Indazole carboxylic acid;1H-Indazole-7-carboxylic acid
- CBNumber:
- CB9197275
- Molecular Formula:
- C8H6N2O2
- Molecular Weight:
- 162.15
- MDL Number:
- MFCD06804572
- MOL File:
- 677304-69-7.mol
| Product description | Number | Pack Size | Price |
| 1H-Indazole-7-carboxylic acid AldrichCPR | ANV00147 | 1G | $747 |
| 1H-indazole-7-carboxylicAcid | H341003 | 500mg | $60 |
| 1H-Indazole-7-carboxylicacid 96% | C11375 | 1g | $63 |
| 1H-Indazole-7-carboxylicacid | J57247 | 10g | $75 |
| 1H-Indazole-7-carboxylicacid 97% | OR60064 | 5g | $87 |
| More product size | |||
| Melting point | ca 240℃ |
|---|---|
| Boiling point | 443.7±18.0 °C(Predicted) |
| Density | 1.506±0.06 g/cm3(Predicted) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | DMSO (Slightly), Methanol (Slightly) |
| form | Crystalline Powder |
| pka | 3.71±0.10(Predicted) |
| color | White to yellow |
| InChI | InChI=1S/C8H6N2O2/c11-8(12)6-3-1-2-5-4-9-10-7(5)6/h1-4H,(H,9,10)(H,11,12) |
| InChIKey | WBCWIQCXHSXMDH-UHFFFAOYSA-N |
| SMILES | N1C2=C(C=CC=C2C(O)=O)C=N1 |
| UNSPSC Code | 12352106 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H335 | |||||||||
| Precautionary statements | P261-P280a-P304+P340-P305+P351+P338-P405-P501a | |||||||||
| HS Code | 29339980 | |||||||||
| NFPA 704 |
|
1H-indazole-7-carboxylic acid price More Price(28)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | ANV00147 | 1H-Indazole-7-carboxylic acid AldrichCPR | 677304-69-7 | 1G | $747 | 2025-07-31 | Buy |
| TRC | H341003 | 1H-indazole-7-carboxylicAcid | 677304-69-7 | 500mg | $60 | 2021-12-16 | Buy |
| Frontier Specialty Chemicals | C11375 | 1H-Indazole-7-carboxylicacid 96% | 677304-69-7 | 1g | $63 | 2021-12-16 | Buy |
| AK Scientific | J57247 | 1H-Indazole-7-carboxylicacid | 677304-69-7 | 10g | $75 | 2021-12-16 | Buy |
| Apolloscientific | OR60064 | 1H-Indazole-7-carboxylicacid 97% | 677304-69-7 | 5g | $87 | 2021-12-16 | Buy |
1H-indazole-7-carboxylic acid Chemical Properties,Uses,Production
Uses
1H-indazole-7-carboxylic Acid is an inhibitor of nitric oxide synthases.
Preparation
Synthesis of 1H-indazole-7-carboxylic acid, H2L4: To 60 mL anhydrous toluene under a nitrogen atmosphere was added methyl-2-amino-3-methylbenzoate (1.8 g, 11 mmol) and KOAc (560 mg, 5.7 mmol), and the mixture heated to reflux, at which time acetic anhydride (3.2 mL, 34 mmol) was added and the mixture stirred at reflux for 10 min. Isoamyl nitrite (2.3 mL, 18 mmol) was added over 30 min and the mixture refluxed overnight. On cooling, the mixture was filtered and evaporated to dryness to give 1.6 g of a pale brown solid, which analysed for methyl 1H-indazole-7-carboxylate. This material was taken up in 40 mL THF, added to a solution of LiOH (5 g, 210 mmol) in 40 mL water, and heated at reflux for 48 h. On cooling, the mixture was concentrated on a rotary evaporator and the resulting aqueous phase filtered and adjusted to pH 4 with dilute HCl, to precipitate the product, which was filtered, washed with water and dried under vacuum. Yield 810 mg, 45%; mp 218–222 °C (decomp);
δH (500 MHz, d6-DMSO): 7.23 (t, 1H, J = 7.5 Hz, H4 ), 7.97 (dd, 1H, J = 7.5, 1.0 Hz, H3 ), 8.06 (dd, 1H, J = 7.8, 0.8 Hz, H5 ), 8.21 (s, 1H, H2 ), 13.1 (br s, 2H, H1 & H6 ); δc (125 MHz, d6-DMSO): 113.7, 120.1, 124.6, 126.5, 129.0, 134.3, 138.0, 167.0; HRMS-ESI m/z: found: 163.0503; C8H7N2O2 requires: 163.0502 [M + H+ ]; ˉνmax/cm?1 (KBr): 3316 s br, 1700 s, 1619 m, 1592 m, 1509 m, 1285 s, 1201 m, 1145 m, 1078 m, 1056 w, 943 m, 858 s, 745 s, 638 m, 601 m.
Synthesis
755752-82-0
677304-69-7
General procedure for the synthesis of 7-carboxy-1H-indazole from 1H-indazole-7-carboxylic acid methyl ester: 1H-indazole-7-carboxylic acid methyl ester (8.30 g, 33.0 mmol) was dissolved in methanol (100 mL) at 0 °C, followed by the addition of 29% aqueous potassium hydroxide solution (20 mL). The reaction mixture was gradually warmed to room temperature and stirred for 18 hours. Upon completion of the reaction, the pH of the reaction solution was adjusted to 5.5 with concentrated hydrochloric acid and the volatile solvent was subsequently removed under reduced pressure. The residue was extracted by partitioning with brine (100 mL) and ethyl acetate (200 mL), and the aqueous layer was further extracted with warmed ethyl acetate (200 mL). All organic phases were combined, dried over anhydrous sodium sulfate and concentrated. The residue was ground with ethyl acetate (30 mL) and isolated by filtration to give the solid product 7-carboxy-1H-indazole in a yield of 5.86 g and 94% yield.
References
[1] Patent: WO2004/29050, 2004, A1. Location in patent: Page 64;65
[2] Patent: WO2008/65508, 2008, A1. Location in patent: Page/Page column 27-28
1H-indazole-7-carboxylic acid Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Taizhou Blazer Biomedical Technology Co., Ltd. | 0523-86112008 13915404123 | sales@blazerbio.com | China | 88 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531151365 | mina@chuanghaibio.com | China | 18126 | 58 |
| Shaanxi Haibo Biotechnology Co., Ltd | +undefined18602966907 | qinhe02@xaltbio.com | China | 997 | 58 |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718; +8613336195806 | sales@capot.com | China | 29735 | 60 |
| ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 33024 | 60 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29847 | 58 |
| Shanghai Arbor Chemical Co., Ltd. | 021-60451682 | act@arborchemical.com | CHINA | 904 | 58 |
| TianYuan Pharmaceutical CO.,LTD | +86-755-23284190 13684996853 | sales@tianpharm.com | CHINA | 304 | 58 |
| Accela ChemBio Inc. | +1-858-6993322 | info@accelachem.com | United States | 21193 | 58 |
| Alchem Pharmtech,Inc. | 8485655694 | sales@alchempharmtech.com | United States | 63687 | 58 |
View Lastest Price from 1H-indazole-7-carboxylic acid manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-07-25 | 1H-indazole-7-carboxylic acid
677304-69-7
|
US $0.00-0.00 / KG | 1KG | 98.0% | 10000KGS | Shaanxi Dideu New Materials Co. Ltd | |
 |
2025-06-27 | 1H-indazole-7-carboxylic acid
677304-69-7
|
US $0.00-0.00 / KG | 1KG | 99% | 500000kg | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2024-11-26 | 1H-Indazole-7-carboxylic aid
677304-69-7
|
US $0.00-0.00 / kg | 1kg | 98% | 1 ton | Nanjing Fred Technology Co., Ltd |
-
- 1H-indazole-7-carboxylic acid
677304-69-7
- US $0.00-0.00 / KG
- 98.0%
- Shaanxi Dideu New Materials Co. Ltd
-
- 1H-indazole-7-carboxylic acid
677304-69-7
- US $0.00-0.00 / KG
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- 1H-Indazole-7-carboxylic aid
677304-69-7
- US $0.00-0.00 / kg
- 98%
- Nanjing Fred Technology Co., Ltd
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