(R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate

Also known as: 2-Hydroxy-2-phenylethyl 4-methylbenzenesulfonate, (R)-(-)-2-Hydroxy-2-phenylethyl p-toluenesulfonate, [(2R)-2-hydroxy-2-phenylethyl] 4-methylbenzenesulfonate, (R)-2-Hydroxy-2-phenylethyl 4-methylbenzenesulfonate, (-)-p-Toluenesulfonic acid (R)-2-hydroxy-2-phenylethyl ester, p-Toluenesulfonic acid (R)-β-hydroxyphenethyl ester, MFCD00236055

(R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate (CAS 40434-87-5) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C15H16O4S and a molecular weight of 292.350 g/mol. Key properties include a melting point of 74-76ºC, a boiling point of 480.6±40.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 244.5±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 40434-87-5
Jingsj CID: J-1334242-2
Molecular Formula: C₁₅H₁₆O₄S
Molecular Weight: 292.350 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	74-76ºC
Boiling Point	480.6±40.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	244.5±27.3 °C
Exact Mass	292.076935
PSA	71.98000
LogP	2.51
Vapor Pressure	0.0±1.3 mmHg at 25°C
Refractive Index	1.590

Customs & Trade Information

HS Code	2906299090
Summary	2906299090 other aromatic alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of (R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate?

The CAS number of (R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate is 40434-87-5.

What are the molecular formula and molecular weight of (R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate?

(R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate has molecular formula C15H16O4S and molecular weight 292.350 g/mol.

What are the upstream and downstream products of (R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate?

For (R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate, Upstream Products: (R)-1-Phenyl-1,2-ethanediol, p-Toluenesulfonyl chloride, [Hydroxy(tosyloxy)iodo]benzene; Downstream Products: (S)-(-)-1-Phenylethanol, (R)-(+)-1-Phenylethanol, (S)-(+)-1-Phenyl-1,2-ethanediol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(R)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate (CAS 40434-87-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1334242-2 (accessed 2026-11-09).

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