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Methyl 4-bromo-2-methoxybenzoate

Also known as: methyl 4-bromo-2-methoxybenzoate, 4-bromo-2-methoxybenzoic acid methyl ester, benzoic acid, 4-bromo-2-methoxy-, methyl ester, methyl-4-bromo-2-methoxybenzoate, 4-bromo-2-methoxybenzoate 98, Methyl 4-bromo-2-methoxybenzoate 98

Methyl 4-bromo-2-methoxybenzoate (CAS 139102-34-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H9BrO3 and a molecular weight of 245.070 g/mol. Key properties include a melting point of 33ºC(lit.), a boiling point of 304.0±22.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 137.7±22.3 °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.
139102-34-4
Jingsj CID
J-1355765-8
Molecular Formula
C9H9BrO3
Molecular Weight
245.070 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point33ºC(lit.)
Boiling Point304.0±22.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point137.7±22.3 °C
Exact Mass243.973495
PSA35.53000
LogP2.91
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.538

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed

Customs & Trade Information

HS Code2918990090
Summary2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Methyl 4-bromo-2-methoxybenzoate?

The CAS number of Methyl 4-bromo-2-methoxybenzoate is 139102-34-4.

What are the molecular formula and molecular weight of Methyl 4-bromo-2-methoxybenzoate?

Methyl 4-bromo-2-methoxybenzoate has molecular formula C9H9BrO3 and molecular weight 245.070 g/mol.

Is Methyl 4-bromo-2-methoxybenzoate hazardous?

Methyl 4-bromo-2-methoxybenzoate has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of Methyl 4-bromo-2-methoxybenzoate?

For Methyl 4-bromo-2-methoxybenzoate, Upstream Products: 4-Bromo-2-hydroxybenzoic acid, iodomethane, Methyl 4-bromo-2-hydroxybenzoate; Downstream Products: 4-Bromo-2-methoxybenzaldehyde, 4-Bromo-2-methoxybenzoic acid, Methyl 2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate.

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

Last updated:

How to cite: Jingsj. "Methyl 4-bromo-2-methoxybenzoate (CAS 139102-34-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1355765-8 (accessed 2026-11-09).

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