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

(R)-(-)-1-苯基-1,2-乙二醇-2-对甲苯磺酸酯

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. It is also known as 2-Hydroxy-2-phenylethyl 4-methylbenzenesulfonate, (R)-(-)-2-Hydroxy-2-phenylethyl p-toluenesulfonate and [(2R)-2-hydroxy-2-phenylethyl] 4-methylbenzenesulfonate. 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-1334242-9
Molecular Formula: C₁₅H₁₆O₄S
Chinese Name: (R)-(-)-1-苯基-1,2-乙二醇-2-对甲苯磺酸酯
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

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.

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)-(-)-1-Phenyl-1,2-ethanediol 2-tosylate (CAS 40434-87-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1334242-9 (accessed 2026-10-25).

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