Melatonin

褪黑素

Also known as: N-[2-(5-methoxy-1H-indol-3-yl)ethyl]acetamide, N-acetyl-5-methoxytryptamine, 5-Methoxy-N-acetyltryptamine, Circadin, Melovine, MLT

CAS No.
73-31-4
Jingsj CID
J-1106343-8
Molecular Formula
C13H16N2O2
Chinese Name
褪黑素
Molecular Weight
232.278 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point116.5-118 °C(lit.)
Boiling Point459.8±55.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point231.9±31.5 °C

GHS Safety & Compliance

Flammable / Acute Toxicity / Health HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of Melatonin?

73-31-4

What are the molecular formula and molecular weight of Melatonin?

C13H16N2O2, molecular weight 232.278 g/mol

Is Melatonin hazardous?

Danger

Data compiled from public chemical databases and supplier catalogs; verify specifications with suppliers before purchase. · Last updated: 8/21/2026