(R)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide

(4R)-2-羟基-5,5-二甲基-4-苯基-1,3,2-二噁磷己环 2-氧化物

Also known as: (-)-Phencyphos, (R)-Phencyphos, (R)-(-)-5,5-Dimethyl-2-hydroxy-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide, 1,3,2-Dioxaphosphorinane, 2-hydroxy-5,5-dimethyl-4-phenyl-, 2-oxide, (4R)-, MFCD00044976

(R)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide (CAS 98674-80-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C11H15O4P and a molecular weight of 242.20800 g/mol. It is also known as (-)-Phencyphos, (R)-Phencyphos and (R)-(-)-5,5-Dimethyl-2-hydroxy-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide. Key properties include a melting point of 224-227ºC(lit.), a boiling point of 344.4ºC at 760mmHg, a density of 1.27g/cm3 and a flash point of 162.1ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 98674-80-7
Jingsj CID: J-48059-6
Molecular Formula: C₁₁H₁₅O₄P
Chinese Name: (4R)-2-羟基-5,5-二甲基-4-苯基-1,3,2-二噁磷己环 2-氧化物
Molecular Weight: 242.20800 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	224-227ºC(lit.)
Boiling Point	344.4ºC at 760mmHg
Density	1.27g/cm3
Flash Point	162.1ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of (R)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide?

The CAS number of (R)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide is 98674-80-7.

What are the molecular formula and molecular weight of (R)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide?

(R)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide has molecular formula C11H15O4P and molecular weight 242.20800 g/mol.

Is (R)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide hazardous?

(R)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide has GHS signal word Warning.

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)-(-)-2-Hydroxy-5,5-dimethyl-4-phenyl-1,3,2-dioxaphosphorinane 2-oxide (CAS 98674-80-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48059-6 (accessed 2026-10-25).

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