(R)-(+)-Methyl p-tolyl sulfoxide

(R)-(+)-甲基对甲苯亚砜

Also known as: (R)-1-methyl-4-(methylsulfinyl)benzene, (R)-methyl 4-methylphenyl sulfoxide, 1-methyl-4-[(R)-methylsulfinyl]benzene, MFCD00151502

(R)-(+)-Methyl p-tolyl sulfoxide (CAS 1519-39-7) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C8H10OS and a molecular weight of 154.22900 g/mol. It is also known as (R)-1-methyl-4-(methylsulfinyl)benzene, (R)-methyl 4-methylphenyl sulfoxide and 1-methyl-4-[(R)-methylsulfinyl]benzene. Key properties include a melting point of 73-75ºC, a boiling point of 282.4ºC at 760mmHg, a density of 1.15g/cm3 and a flash point of 124.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1519-39-7
Jingsj CID: J-28846-8
Molecular Formula: C₈H₁₀OS
Chinese Name: (R)-(+)-甲基对甲苯亚砜
Molecular Weight: 154.22900 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	73-75ºC
Boiling Point	282.4ºC at 760mmHg
Density	1.15g/cm3
Flash Point	124.6ºC
Exact Mass	154.04500
PSA	36.28000
LogP	2.59810
Vapor Pressure	0.00574mmHg at 25°C
Refractive Index	1.59

Customs & Trade Information

HS Code	2930909090
Summary	2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of (R)-(+)-Methyl p-tolyl sulfoxide?

The CAS number of (R)-(+)-Methyl p-tolyl sulfoxide is 1519-39-7.

What are the molecular formula and molecular weight of (R)-(+)-Methyl p-tolyl sulfoxide?

(R)-(+)-Methyl p-tolyl sulfoxide has molecular formula C8H10OS and molecular weight 154.22900 g/mol.

What are the upstream and downstream products of (R)-(+)-Methyl p-tolyl sulfoxide?

For (R)-(+)-Methyl p-tolyl sulfoxide, Upstream Products: Methylmagnesium iodide, (1R,2S,5R)-(-)-Menthyl (S)-p-toluenesulfinate, Methyl p-tolyl sulfide; Downstream Products: 1-Methyl-4-(methylsulfonyl)benzene, methyl p-tolyl sulfoxide, Methyl p-tolyl sulfide.

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)-(+)-Methyl p-tolyl sulfoxide (CAS 1519-39-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28846-8 (accessed 2026-10-28).

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