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5-Hydroxyindole-3-acetic acid

Also known as: 5-Hydroxyindole-3-acetic acid, 5-Hydroxyindoleacetic acid, 5-Hydroxyindolacetic Acid, 5-Hydroxyindoleacetate, 5-Hydroxy-3-indolylacetic acid, (5-Hydroxy-1H-indol-3-yl)acetic acid, 5-hydroxyindol-3-ylacetic acid

5-Hydroxyindole-3-acetic acid (CAS 54-16-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9NO3 and a molecular weight of 191.183 g/mol. Key properties include a melting point of 161-164ºC (dec.)(lit.), a boiling point of 497.1±30.0 °C at 760 mmHg, a density of 1.496±0.06 g/cm3 and a flash point of 254.4±24.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
54-16-0
Jingsj CID
J-27103-4
Molecular Formula
C10H9NO3
Molecular Weight
191.183 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point161-164ºC (dec.)(lit.)
Boiling Point497.1±30.0 °C at 760 mmHg
Density1.496±0.06 g/cm3
Flash Point254.4±24.6 °C
Exact Mass191.058243
PSA73.32000
LogP0.26
Vapor Pressure0.0±1.3 mmHg at 25°C
Refractive Index1.740
Additional PropertySparingly soluble (11 g/L) (25 ºC)

Activity & Biological Data

TargetHuman Endogenous Metabolite
Additional Information[1]. Corcuff JB, et al. Urinary sampling for 5HIAA and metanephrines determination: revisiting the recommendations. Endocr Connect. 2017 Aug;6(6):R87-R98.

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 5-Hydroxyindole-3-acetic acid?

The CAS number of 5-Hydroxyindole-3-acetic acid is 54-16-0.

What are the molecular formula and molecular weight of 5-Hydroxyindole-3-acetic acid?

5-Hydroxyindole-3-acetic acid has molecular formula C10H9NO3 and molecular weight 191.183 g/mol.

What are the upstream and downstream products of 5-Hydroxyindole-3-acetic acid?

For 5-Hydroxyindole-3-acetic acid, Upstream Products: 5-benzyloxyindole-3-acetic acid, 5-Benzyloxygramine, 5-Benzyloxyindole; Downstream Products: 5-Hydroxytryptophol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "5-Hydroxyindole-3-acetic acid (CAS 54-16-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-27103-4 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.