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 1999 · 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
In stock — same-day dispatch
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.
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1 g — £124.50 per pack ex VAT · £149.40 inc. VAT
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5 g — £307.10 per pack ex VAT · £368.52 inc. VAT
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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
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.