Lamotrigine

Also known as: Lamictal, BW-430C, Crisomet, Labileno, Lamotriginum, Lamictal CD, Lamictal XR, Lamotrigin, Lamotrigina, 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5-diamine, 3,5-Diamino-6-(2,3-dichlorophenyl)-1,2,4-triazine, 1,2,4-Triazine-3,5-diamine, 6-(2,3-dichlorophenyl)-, MFCD00865333

Lamotrigine (CAS 84057-84-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H7Cl2N5 and a molecular weight of 256.091 g/mol. Key properties include a melting point of 177-181°C, a boiling point of 503.1±60.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 258.1±32.9 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 84057-84-1
Jingsj CID: J-44577-2
Molecular Formula: C₉H₇Cl₂N₅
Molecular Weight: 256.091 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	177-181°C
Boiling Point	503.1±60.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	258.1±32.9 °C
Exact Mass	255.007858
PSA	90.71000
LogP	-0.19
Vapor Pressure	0.0±1.3 mmHg at 25°C
Refractive Index	1.706
Storage Conditions	2-8°C
Additional Property	DMSO: 20 mg/mL at 60 °C, soluble

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

H301 — Toxic if swallowed

Activity & Biological Data

Additional Information	[1]. Goa, K.L., S.R. Ross, and P. Chrisp, Lamotrigine. A review of its pharmacological properties and clinical efficacy in epilepsy. Drugs, 1993. 46(1): p. 152-76. [2]. Leach, M.J., C.M. Marden, and A.A. Miller, Pharmacological studies on lamotrigine, a novel potential antiepileptic drug: II. Neurochemical studies on the mechanism of action. Epilepsia, 1986. 27(5): p. 490-7. [3]. Cheung, H., D. Kamp, and E. Harris, An in vitro investigation of the action of lamotrigine on neuronal voltage-activated sodium channels. Epilepsy Res, 1992. 13(2): p. 107-12. [4]. Goldsmith, D.R., et al., Lamotrigine: a review of its use in bipolar disorder. Drugs, 2003. 63(19): p. 2029-50.

Additional Information

[1]. Goa, K.L., S.R. Ross, and P. Chrisp, Lamotrigine. A review of its pharmacological properties and clinical efficacy in epilepsy. Drugs, 1993. 46(1): p. 152-76. [2]. Leach, M.J., C.M. Marden, and A.A. Miller, Pharmacological studies on lamotrigine, a novel potential antiepileptic drug: II. Neurochemical studies on the mechanism of action. Epilepsia, 1986. 27(5): p. 490-7. [3]. Cheung, H., D. Kamp, and E. Harris, An in vitro investigation of the action of lamotrigine on neuronal voltage-activated sodium channels. Epilepsy Res, 1992. 13(2): p. 107-12. [4]. Goldsmith, D.R., et al., Lamotrigine: a review of its use in bipolar disorder. Drugs, 2003. 63(19): p. 2029-50.

Customs & Trade Information

HS Code	2933699090
Summary	2933699090 other compounds containing an unfused triazine ring (whether or not hydrogenated) in the structure。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Lamotrigine?

The CAS number of Lamotrigine is 84057-84-1.

What are the molecular formula and molecular weight of Lamotrigine?

Lamotrigine has molecular formula C9H7Cl2N5 and molecular weight 256.091 g/mol.

Is Lamotrigine hazardous?

Lamotrigine has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of Lamotrigine?

For Lamotrigine, Upstream Products: 2-(2,3-Dichlorophenyl)-2-guanidinyliminoacetonitrile, 2,3-Dichlorobenzonitrile, Aminoguanidine bicarbonate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Lamotrigine (CAS 84057-84-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44577-2 (accessed 2026-11-09).

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