Molekula
Indole-4-carboxylic acid
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Indole-4-carboxylic acid is a heterocyclic aromatic compound featuring an indole core with a carboxylic acid substituent at the fourth position. It is primarily used as a synthetic intermediate in pharmaceuticals, agrochemicals, and organic synthesis, particularly in the preparation of biologically active compounds and fluorescent dyes. This product has a CAS number of 2124-55-2, with the molecular formula C9H7NO2 and a molecular weight of 161.16 g/mol. It is stable under ambient storage conditions and carries no signal word for hazard classification. Molekula supplies Indole-4-carboxylic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
1 g — $236.60 per pack
-
5 g — $583.40 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Solid |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 15426468 |
| CAS Number | 2124-55-2 |
| IUPAC Name | 1H-indole-4-carboxylic acid |
| Molecular Formula | C9H7NO2 |
| Molecular Weight | 161.16 |
| Exact Mass | 161.0477 |
| SMILES | C1=CC(=C2C=CNC2=C1)C(=O)O |
| InChIKey | ROGHUJUFCRFUSO-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H7NO2/c11-9(12)7-2-1-3-8-6(7)4-5-10-8/h1-5,10H,(H,11,12) |
| PubChem CID | 595229 |
| REACH Code | Y113 |
| HTS Code | 2933.99.8290 |
| Tariff Code | 2933998090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1h-4-indolecarboxylic acid
- 1H-Indole-4-carboxylic acid
- 4-Carboxyindole
- 4-INDOLECARBOXYLIC ACID
- indol-4-yl carboxylic acid
Frequently asked questions
What is Indole-4-carboxylic acid commonly used for?
Indole-4-carboxylic acid is primarily used as an intermediate in organic synthesis, including pharmaceuticals, agrochemicals, and biochemical research.
What is the molecular formula and molecular weight of Indole-4-carboxylic acid?
The molecular formula is **C9H7NO2**, and the molecular weight is **161.16 g/mol**.
How should Indole-4-carboxylic acid be stored?
Store at **ambient temperature** in a cool, dry place, away from incompatible substances.
What grades or purity levels of Indole-4-carboxylic acid does Molekula supply?
Molekula supplies **analytical standard (ACS) and reagent grade** Indole-4-carboxylic acid, with typical purities of ≥98%.
Can Molekula supply Indole-4-carboxylic acid in bulk quantities?
Yes, Molekula can provide Indole-4-carboxylic acid in **bulk quantities** upon request, subject to availability and order volume.
What documentation is provided with an order of Indole-4-carboxylic acid?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.