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API Process Intermediates & Related Compounds

Tri-o-tolylphosphine oxide

Available on request

Tri-o-tolylphosphine oxide (CAS 6163-63-9) supplier Zemixal. Request a quote with price, lead time and documents. Packs from 10 mg.

Pack sizes
Tri-o-tolylphosphine oxide chemical structure
CAS number6163-63-9
FormulaC21H21OP
Molar mass320.4 g/mol
Physical formSolid
InChIKeyVGSVITFVAXDZAL-UHFFFAOYSA-N
IUPAC name1-bis(2-methylphenyl)phosphoryl-2-methylbenzene

About Tri-o-tolylphosphine oxide

Zemixal supplies Tri-o-tolylphosphine oxide within its pharma Intermediates & Building Blocks portfolio. For your records, the material is defined by CAS 6163-63-9, formula C21H21OP and molar mass 320.4 g/mol. It is handled as a solid.

Common uses in the lab and plant

  • API route development
  • Impurity fate & purge studies
  • Analytical method development

Handling and storage

Handle with the usual laboratory precautions and consult the SDS supplied with each lot.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. You receive a batch certificate of analysis and a 16-section SDS with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Eletriptan

See every impurity, metabolite and related compound we list for this API.

Eletriptan standards

Typical uses

  • API route development
  • Impurity fate & purge studies
  • Analytical method development

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of Tri-o-tolylphosphine oxide
Product nameTri-o-tolylphosphine oxide
Catalogue numberZX-039095
CAS number6163-63-9
IUPAC name1-bis(2-methylphenyl)phosphoryl-2-methylbenzene
Molecular formulaC21H21OP
Molar mass320.4 g/mol
Exact mass320.133
Physical formSolid
XLogP35.1
H-bond donors / acceptors0 / 1
Topological polar surface area17.1 Ų
InChIKeyVGSVITFVAXDZAL-UHFFFAOYSA-N
SMILESCC1=CC=CC=C1P(=O)(C2=CC=CC=C2C)C3=CC=CC=C3C
PubChem CID326944
SynonymsTris(o-tolyl)phosphine oxide, Phosphine oxide, tri-o-tolyl-, tris(2-methylphenyl)phosphine oxide, Phosphine oxide, tris(2-methylphenyl)-, Tris(2-tolyl)phosphine oxide, Tri(o-methylphenyl)phosphine monoxide, 1-(bis-o-tolylphosphoryl)-2-methyl-benzene, Tris(2-methylphenyl)(oxo)-lambda~5~-phosphane

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

No GHS classification is on file for this item. Handle it as an unknown laboratory chemical and request the SDS with your quotation.

Pack sizes

Pack sizes of Tri-o-tolylphosphine oxide
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Tri-o-tolylphosphine oxide

Which CAS number identifies Tri-o-tolylphosphine oxide?
Tri-o-tolylphosphine oxide is registered under CAS 6163-63-9. You may also see it listed as Tris(o-tolyl)phosphine oxide, Phosphine oxide, tri-o-tolyl-, tris(2-methylphenyl)phosphine oxide. Our catalogue number for this item is ZX-039095.
What are the formula and molar mass of Tri-o-tolylphosphine oxide?
For Tri-o-tolylphosphine oxide, its formula is C21H21OP and its molar mass is 320.4 g/mol. The systematic (IUPAC) name is 1-bis(2-methylphenyl)phosphoryl-2-methylbenzene. InChIKey VGSVITFVAXDZAL-UHFFFAOYSA-N lets you match it in any structure database.
How is Tri-o-tolylphosphine oxide used in pharmaceutical QC?
Tri-o-tolylphosphine oxide is a characterised reference material linked to Eletriptan. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Tri-o-tolylphosphine oxide?
The grade and assay are confirmed on the quotation and the batch COA. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Tri-o-tolylphosphine oxide?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Tri-o-tolylphosphine oxide to my country?
Yes. Tri-o-tolylphosphine oxide ships worldwide by express courier, air cargo or sea freight, quoted on the Incoterm you prefer, with full export documents.

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