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Serotonin hydrochloride

Also known as: 3-(2-Aminoethyl)-5-hydroxyindole hydrochloride, 5-HT, 5-Hydroxytryptamine hydrochloride, Serotonin HCl, 3-(2-Aminoethyl)-1H-indol-5-ol hydrochloride

Serotonin hydrochloride (CAS 153-98-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H13ClN2O and a molecular weight of 212.676 g/mol. Key properties include a melting point of 149-154 °C(lit.), a boiling point of 416.1ºC at 760 mmHg and a flash point of 205.4ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
153-98-0
Jingsj CID
J-11811-6
Molecular Formula
C10H13ClN2O
Molecular Weight
212.676 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point149-154 °C(lit.)
Boiling Point416.1ºC at 760 mmHg
Flash Point205.4ºC
Exact Mass212.071640
PSA62.04000
LogP2.87700
Vapor Pressure1.63E-07mmHg at 25°C
Additional Propertysoluble

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H332 — Harmful if inhaled
  • H335 — May cause respiratory irritation

Activity & Biological Data

Target5-HT receptor[1] Ki: 44 μM (COMT)[1]
Additional Information[1]. Tsao D, et al. Serotonin-induced hypersensitivity via inhibition of catechol O-methyltransferase activity. Mol Pain. 2012 Apr 13;8:25. [2]. Shajib MS, et al. Interleukin 13 and serotonin: linking the immune and endocrine systems in murine models of intestinal inflammation. PLoS One. 2013 Aug 28;8(8):e72774.

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 Serotonin hydrochloride?

The CAS number of Serotonin hydrochloride is 153-98-0.

What are the molecular formula and molecular weight of Serotonin hydrochloride?

Serotonin hydrochloride has molecular formula C10H13ClN2O and molecular weight 212.676 g/mol.

Is Serotonin hydrochloride hazardous?

Serotonin hydrochloride has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H315 — Causes skin irritation.

What are the upstream and downstream products of Serotonin hydrochloride?

For Serotonin hydrochloride, Downstream Products: 5-Methoxytryptamine, Bufotenine, 5-Benzyloxytryptamine.

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

Last updated:

How to cite: Jingsj. "Serotonin hydrochloride (CAS 153-98-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-11811-6 (accessed 2026-11-09).

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