Tri(2-butoxyethyl) phosphate

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MedKoo CAT#: 558591

CAS#: 78-51-3

Description: Tri(2-butoxyethyl) phosphate is an inhibitor of drug-protein binding and present in stoppers of blood sample 'vacutainers'.

Chemical Structure

Tri(2-butoxyethyl) phosphate
CAS# 78-51-3

Theoretical Analysis

MedKoo Cat#: 558591
Name: Tri(2-butoxyethyl) phosphate
CAS#: 78-51-3
Chemical Formula: C18H39O7P
Exact Mass: 398.24
Molecular Weight: 398.480
Elemental Analysis: C, 54.26; H, 9.87; O, 28.11; P, 7.77

Price and Availability

Size Price Availability Quantity
10g USD 230
25g USD 425
250g USD 625
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Synonym: Tri(2-butoxyethyl) phosphate; Phosflex T-bep; Phosphoric acid, tributoxyethyl ester; TBEP;

IUPAC/Chemical Name: tris(2-butoxyethyl) phosphate


InChi Code: InChI=1S/C18H39O7P/c1-4-7-10-20-13-16-23-26(19,24-17-14-21-11-8-5-2)25-18-15-22-12-9-6-3/h4-18H2,1-3H3


Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.03.00

Product Data:

Preparing Stock Solutions

The following data is based on the product molecular weight 398.480000000000000000000000000000 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Guo X, Mu T, Xian Y, Luo D, Wang C. Ultra-performance liquid chromatography tandem mass spectrometry for the rapid simultaneous analysis of nine organophosphate esters in milk powder. Food Chem. 2016 Apr 1;196:673-81. doi: 10.1016/j.foodchem.2015.09.100. Epub 2015 Sep 30. PubMed PMID: 26593541.