(R)-(-)-4-Methylmandelic acid

(R)-(-)-4-甲基扁桃酸

Also known as: (R)-(-)-4-Methylmandelic acid, (4-Methylphenyl)hydroxyacetic acid, 2-hydroxy-2-(p-tolyl)acetic acid, 2-p-tolyl-2-hydroxyethanoic acid, 4-Methylmandelic acid, D-4-methyl-mandelic acid, Hydroxy(4-methylphenyl)acetic acid, p-methylmandelic acid

(R)-(-)-4-Methylmandelic acid (CAS 31284-89-6) 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 166.17400 g/mol. It is also known as (4-Methylphenyl)hydroxyacetic acid, 2-hydroxy-2-(p-tolyl)acetic acid and 2-p-tolyl-2-hydroxyethanoic acid. Key properties include a melting point of 130-133ºC, a boiling point of 336.4ºC at 760 mmHg, a density of 1.264g/cm3 and a flash point of 171.4ºC. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 31284-89-6
Jingsj CID: J-22862-0
Molecular Formula: C₉H₁₀O₃
Chinese Name: (R)-(-)-4-甲基扁桃酸
Molecular Weight: 166.17400 g/mol
Category: Organic Acids
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	130-133ºC
Boiling Point	336.4ºC at 760 mmHg
Density	1.264g/cm3
Flash Point	171.4ºC

GHS Safety & Compliance

CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of (R)-(-)-4-Methylmandelic acid?

The CAS number of (R)-(-)-4-Methylmandelic acid is 31284-89-6.

What are the molecular formula and molecular weight of (R)-(-)-4-Methylmandelic acid?

(R)-(-)-4-Methylmandelic acid has molecular formula C9H10O3 and molecular weight 166.17400 g/mol.

Is (R)-(-)-4-Methylmandelic acid hazardous?

(R)-(-)-4-Methylmandelic acid has GHS signal word Danger.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(R)-(-)-4-Methylmandelic acid (CAS 31284-89-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22862-0 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.