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Methyl (2S)-2-hydroxy-2-phenylacetate

Also known as: Methyl (S)-(+)-mandelate, Methyl L-(+)-mandelate, (+)-Methyl L-mandelate, (+)-Methyl (S)-α-hydroxy-phenylacetate, (S)-Methyl 2-hydroxy-2-phenylacetate, L-Mandelic acid methyl ester, Benzeneacetic acid, α-hydroxy-, methyl ester, (αS)-, MFCD00064246

Methyl (2S)-2-hydroxy-2-phenylacetate (CAS 21210-43-5) 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 56-58 °C, a boiling point of 258.1±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 113.1±14.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21210-43-5
Jingsj CID
J-985283-9
Molecular Formula
C9H10O3
Molecular Weight
166.174 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point56-58 °C
Boiling Point258.1±0.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point113.1±14.5 °C
Exact Mass166.062988
PSA46.53000
LogP0.90
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.535
Storage Conditions2-8℃

Customs & Trade Information

HS Code2918199090
Summary2918199090 other carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Methyl (2S)-2-hydroxy-2-phenylacetate?

The CAS number of Methyl (2S)-2-hydroxy-2-phenylacetate is 21210-43-5.

What are the molecular formula and molecular weight of Methyl (2S)-2-hydroxy-2-phenylacetate?

Methyl (2S)-2-hydroxy-2-phenylacetate has molecular formula C9H10O3 and molecular weight 166.174 g/mol.

What are the upstream and downstream products of Methyl (2S)-2-hydroxy-2-phenylacetate?

For Methyl (2S)-2-hydroxy-2-phenylacetate, Downstream Products: (2S,3R)-3-Amino-2-hydroxy-4-phenylbutanoic acid, (S)-(+)-1-Phenyl-1,2-ethanediol 2-tosylate, (1S)-2-Hydroxy-1,2,2-triphenylethyl acetate.

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 (2S)-2-hydroxy-2-phenylacetate (CAS 21210-43-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-985283-9 (accessed 2026-11-09).

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