Product Description of Indole-5-Carboxylic Acid CAS#1670-81-1
Indole-5-carboxylic acid (CAS#1670-81-1), bearing the molecular formula C₉H₇NO₂, is a flexible heterocyclic scaffold originating from the indole skeleton. It is heavily adopted across research work as an essential synthetic intermediate and reactant to produce enzyme inhibitors, anticancer immunomodulators, and a broad array of therapeutic agents.

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 functions as a critical synthetic scaffold for organic transformations and pharmaceutical manufacturing. It enjoys extensive adoption within research and development programs, alongside routine synthetic workflows and industrial-scale chemical production.


