Indole-5-Carboxylic Acid CAS#1670-81-1
Versatile Heterocyclic Building Block: Serves as an important indole-based intermediate for the synthesis of a wide range of pharmaceutical and fine chemical compounds.
Widely Used in Drug Discovery: Plays a crucial role in medicinal chemistry research, supporting the development of innovative therapeutic candidates and bioactive molecules.
Ideal for Enzyme Inhibitor Synthesis: Acts as a key precursor in the preparation of enzyme inhibitors, facilitating advanced biochemical and pharmaceutical studies.
Supports Advanced Cancer Research: Utilized in the development of anti-cancer immunomodulators and other therapeutic compounds, making it valuable for oncology-related research applications.
Product Description of Indole-5-Carboxylic Acid CAS#1670-81-1
Indole-5-carboxylic acid (CAS#1670-81-1) is a versatile indole-derived heterocyclic building block with the molecular formula C₉H₇NO₂. It is extensively used in scientific research as an important intermediate and reactant for the synthesis of enzyme inhibitors, anti-cancer immunomodulators, and a variety of therapeutic compounds.
Indole-5-Carboxylic Acid Chemical Properties
| Melting point | 211-213 °C (lit.) |
| Boiling point | 287.44°C (rough estimate) |
| density | 1.2480 (rough estimate) |
| refractive index | 1.5050 (estimate) |
| storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
| solubility | Soluble in ethanol (50 mg/ml), dimethyl sulfoxide and methanol. |
| pka | 4.40±0.30(Predicted) |
| form | Powder |
| color | Light beige to yellow |
| BRN | 124391 |
| InChIKey | IENZCGNHSIMFJE-UHFFFAOYSA-N |
| CAS DataBase Reference | 1670-81-1(CAS DataBase Reference) |
| Hazard Codes | Xn,Xi |
| Risk Statements | 36/37/38-21/22 |
| Safety Statements | 22-24/25-36/37/39-26 |
| WGK Germany | 3 |
| HazardClass | IRRITANT |
| HS Code | 29339990 |
Product Application of Indole-5-Carboxylic Acid CAS#1670-81-1
Indole-5-carboxylic acid serves as an important intermediate in organic synthesis and pharmaceutical production. It is widely utilized in research and development activities, as well as in chemical synthesis and industrial manufacturing applications.




