(2-Methoxy-2-oxoethyl)triphenylphosphonium bromide

甲氧甲酰基甲基三苯基溴化膦

Also known as: (Methoxycarbonylmethyl)triphenylphosphonium bromide, (Carbomethoxymethyl)triphenylphosphonium bromide, methyl (triphenylphosphonio)acetate bromide, Carbomethoxymethyl(triphenyl)phosphonium Bromide, Methoxycarbonylmethyl(triphenyl)phosphonium Bromide, Ph3PCH2CO2MeBr, CMMTPPB

(2-Methoxy-2-oxoethyl)triphenylphosphonium bromide (CAS 1779-58-4) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C21H20BrO2P and a molecular weight of 415.260 g/mol. It is also known as (Methoxycarbonylmethyl)triphenylphosphonium bromide, (Carbomethoxymethyl)triphenylphosphonium bromide and methyl (triphenylphosphonio)acetate bromide. Key property: a melting point of 165-170 °C (dec.)(lit.). GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1779-58-4
Jingsj CID
J-12172-3
Molecular Formula
C21H20BrO2P
Chinese Name
甲氧甲酰基甲基三苯基溴化膦
Molecular Weight
415.260 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point165-170 °C (dec.)(lit.)

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of (2-Methoxy-2-oxoethyl)triphenylphosphonium bromide?

The CAS number of (2-Methoxy-2-oxoethyl)triphenylphosphonium bromide is 1779-58-4.

What are the molecular formula and molecular weight of (2-Methoxy-2-oxoethyl)triphenylphosphonium bromide?

(2-Methoxy-2-oxoethyl)triphenylphosphonium bromide has molecular formula C21H20BrO2P and molecular weight 415.260 g/mol.

Is (2-Methoxy-2-oxoethyl)triphenylphosphonium bromide hazardous?

(2-Methoxy-2-oxoethyl)triphenylphosphonium bromide has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "(2-Methoxy-2-oxoethyl)triphenylphosphonium bromide (CAS 1779-58-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-12172-3 (accessed 2026-10-22).

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