Methyltriphenylphosphonium bromide

CAS Number: 1779-49-3

Molecular Formula: C19H18P.Br

Purity: Methyltriphenylphosphonium bromide 98% purity

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About Methyltriphenylphosphonium bromide

Methyltriphenylphosphonium bromide (CAS 1779-49-3) serves as a critical Wittig reagent in the API intermediates market, where its ability to facilitate precise methylenation of carbonyl groups is essential for the construction of complex olefinic frameworks in modern drug design. As a leading bulk chemical supplier, we...

Variants

Methyl triphenyl Phosphonium Bromide

CAS: 1779-49-3

Synonyms

Methyltriphenylphosphonium bromide
1779-49-3
Methyl triphenylphosphonium bromide
Phosphonium, methyltriphenyl-, bromide (1:1)
methyl(triphenyl)phosphonium bromide

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Methyltriphenylphosphonium bromide Specifications

CAS Number

1779-49-3

Molecular Formula

C19H18P.Br

Molecular Weight

357.23 g/mol

IUPAC Name

methyl(triphenyl)phosphanium;bromide

Canonical SMILES

C[P+](C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3.[Br-]

InChI Key

LSEFCHWGJNHZNT-UHFFFAOYSA-M

InChI

InChI=1S/C19H18P.BrH/c1-20(17-11-5-2-6-12-17,18-13-7-3-8-14-18)19-15-9-4-10-16-19;/h2-16H,1H3;1H/q+1;/p-1

EINECS Number

217-218-9

MDL Number

MFCD00011804

HSN No

29319090

CAS Number

1779-49-3

Molecular Formula

C19H18P.Br

Molecular Weight

357.23 g/mol

IUPAC Name

methyl(triphenyl)phosphanium;bromide

Canonical SMILES

C[P+](C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3.[Br-]

InChI Key

LSEFCHWGJNHZNT-UHFFFAOYSA-M

InChI

InChI=1S/C19H18P.BrH/c1-20(17-11-5-2-6-12-17,18-13-7-3-8-14-18)19-15-9-4-10-16-19;/h2-16H,1H3;1H/q+1;/p-1

EINECS Number

217-218-9

MDL Number

MFCD00011804

HSN No

29319090

Molecular Weight

357.23 g/mol

Purity

Methyltriphenylphosphonium bromide 98% purity

Melting Point

230-234 °C

Freezing point

230 - 234 °C

Flash Point

240 °C

Density

1.57 g/cm3

Precise Quality

1779-49-3

PSA

0 Å²

logP

-1.18

Average mass

357.23 g/mol

Monoisotopic mass

356.03295 Da

Molar mass

357.23 g/mol

Vapour pressure

0.0000002 hPa

Appearance

White to off-white crystalline powder

Solubility

Highly soluble in polar organic solvents (DCM, Acetonitrile, DMF, DMSO)

Hygroscopicity

Moisture-sensitive; readily absorbs atmospheric water

Precautionary Statement Codes

P261, P264, P270, P271, P273, P280, P301+P310, P301+P312+P330, P302+P352+P312, P304+P340+P312, P305+P351+P338, P332+P313, P337+P313, P362+P364, P391, P405, and P501

Hazard Classes and Categories

Acute Tox. 3 (100%) Aquatic Chronic 2 (100%)

Wittig Reagent

A principal precursor used to generate methylenetriphenylphosphorane for the efficient methylenation of aldehydes and ketones in organic synthesis

Phase Transfer Catalyst

A quaternary phosphonium salt employed to facilitate the transfer of reactants between immiscible phases, particularly in the production of powder coatings

Synthetic Building Block

A versatile reagent utilized in the synthesis of complex organic molecules, including enynes, benzazepine ring systems, and pharmaceutical intermediates

Mitochondrial Probe

A lipophilic cationic molecule used in biochemical research to measure membrane potential and deliver targeted antioxidants or therapeutic agents to specific cellular components.

Terminal Alkene Synthesis

A Premier alkylidene source to convert complex, sterically hindered ketones and aldehydes into terminal vinyl groups during natural product total synthesis

Natural Product Total Synthesis

A key olefination steps in constructing complex macrocycles is heavily utilised in assembling fragments for marine toxins, polyketides, and terpenoids

Pharmaceutical Framework Construction

Introduces terminal olefinic handles onto aromatic or heterocyclic scaffolds, setting up subsequent modifications like cross-coupling or click chemistry

Polymer Backbone Functionalisation

An active end-groups of pre-formed polymer chains to introduce reactive terminal double bonds, enabling custom cross-linking or graft copolymerization

Phase-Transfer Catalysis

A quaternary phosphonium phase-transfer catalyst, facilitating biphasic organic reactions like alkylations, nucleophilic substitutions, and fluorinations

Materials Science Engineering

An anchoring organic ligand or intercalating agent to modify the interlayer spacing and surface properties of nanoclays, graphene oxide, and MXenes

Medicinal Chemistry Labeling

A isotopic carbon tracer (¹¹C or ¹⁴C) installation into pharmaceutical candidates by utilising radio-labelled variants of the methyl group

Coordination Chemistry Precursor

An essential starting material to synthesise complex, multidentate phosphonium ylide ligands that coordinate to transition metals for catalyst design

Methyltriphenylphosphonium bromide
1779-49-3
Methyl triphenylphosphonium bromide
Phosphonium, methyltriphenyl-, bromide (1:1)
methyl(triphenyl)phosphonium bromide

Methyltriphenylphosphonium bromide FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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