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3-Ethoxy-4-ethoxycarbonyl phenylacetic acid

Also known as: Ethyl 4-(carboxymethyl)-2-ethoxybenzoate, 2-(3-ethoxy-4-ethoxycarbonylphenyl)acetic acid, 2-[3-ethoxy-4-(ethoxycarbonyl)phenyl]acetic acid, 4-Carboxymethyl-2-ethoxybenzoic acid ethyl ester, Repaglinide intermediate, 3-Ethoxy-4-(ethoxycarbonyl)benzeneacetic acid, Repaglinide EP impurity B

3-Ethoxy-4-ethoxycarbonyl phenylacetic acid (CAS 99469-99-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H16O5 and a molecular weight of 252.263 g/mol. Key properties include a melting point of 78-80ºC, a boiling point of 414.8±35.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 155.9±19.4 °C. It is classified under GHS with signal word Danger and hazard statements H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
99469-99-5
Jingsj CID
J-1577869-5
Molecular Formula
C13H16O5
Molecular Weight
252.263 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point78-80ºC
Boiling Point414.8±35.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point155.9±19.4 °C
Exact Mass252.099777
PSA72.83000
LogP2.39
Vapor Pressure0.0±1.0 mmHg at 25°C
Refractive Index1.527
Storage ConditionsRefrigerator

GHS Safety & Compliance

CorrosionSignal word: Danger
  • H318 — Causes serious eye damage

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 3-Ethoxy-4-ethoxycarbonyl phenylacetic acid?

The CAS number of 3-Ethoxy-4-ethoxycarbonyl phenylacetic acid is 99469-99-5.

What are the molecular formula and molecular weight of 3-Ethoxy-4-ethoxycarbonyl phenylacetic acid?

3-Ethoxy-4-ethoxycarbonyl phenylacetic acid has molecular formula C13H16O5 and molecular weight 252.263 g/mol.

Is 3-Ethoxy-4-ethoxycarbonyl phenylacetic acid hazardous?

3-Ethoxy-4-ethoxycarbonyl phenylacetic acid has GHS signal word Danger and hazard statements H318 — Causes serious eye damage.

What are the upstream and downstream products of 3-Ethoxy-4-ethoxycarbonyl phenylacetic acid?

For 3-Ethoxy-4-ethoxycarbonyl phenylacetic acid, Upstream Products: ethyl 2-ethoxy-4-(2-ethoxy-2-oxoethyl)benzoate, Carbon dioxide, Ethyl 2-ethoxy-4-methylbenzoate; Downstream Products: Repaglinide, (S)-Repaglinide Ethyl Ester.

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

Last updated:

How to cite: Jingsj. "3-Ethoxy-4-ethoxycarbonyl phenylacetic acid (CAS 99469-99-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1577869-5 (accessed 2026-11-09).

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