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DL-α-Methoxyphenylacetic acid

Also known as: DL-alpha-Methoxyphenylacetic acid, Methoxy(phenyl)acetic acid, (±)-α-Methoxyphenylacetic acid, 2-Methoxy-2-phenylacetic acid, α-Methoxybenzeneacetic acid, α-methoxy-α-phenylacetic acid, Benzeneacetic acid, α-methoxy-, MOPA, DL-Methoxyphenylacetic acid, NSC 5665

DL-α-Methoxyphenylacetic acid (CAS 7021-09-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O3 and a molecular weight of 166.174 g/mol. Key properties include a melting point of 68-72ºC, a boiling point of 283.8±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 116.1±15.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7021-09-2
Jingsj CID
J-23201-9
Molecular Formula
C9H10O3
Molecular Weight
166.174 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point68-72ºC
Boiling Point283.8±0.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point116.1±15.3 °C
Exact Mass166.062988
PSA46.53000
LogP1.29
Appearancecrystalline | white
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.535

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of DL-α-Methoxyphenylacetic acid?

The CAS number of DL-α-Methoxyphenylacetic acid is 7021-09-2.

What are the molecular formula and molecular weight of DL-α-Methoxyphenylacetic acid?

DL-α-Methoxyphenylacetic acid has molecular formula C9H10O3 and molecular weight 166.174 g/mol.

Is DL-α-Methoxyphenylacetic acid hazardous?

DL-α-Methoxyphenylacetic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of DL-α-Methoxyphenylacetic acid?

For DL-α-Methoxyphenylacetic acid, Upstream Products: (R)-(-)-Mandelic acid, Dimethyl sulfate, 2-Bromo-2-phenylacetic acid; Downstream Products: (R)-(-)-alpha-Methoxyphenylacetic acid, (S)-(+)-alpha-Methoxyphenylacetic acid, (R)-(-)-2-Methoxy-2-phenylethanol.

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

Last updated:

How to cite: Jingsj. "DL-α-Methoxyphenylacetic acid (CAS 7021-09-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-23201-9 (accessed 2026-11-09).

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