3,6,9-Trioxaundecanedioic acid
3,6,9-Trioxaundecanedioic acid (CAS: 13887-98-4), with the molecular formula C8H14O7 and a molecular weight of 222.19, is a functionalised oligoethylene glycol derivative. It serves as a versatile building block in chemical synthesis and finds applications in chemical biology, particularly in PEGylation strategies. This compound is supplied by Tech Serve Solutions for research and development purposes.
- IUPAC
- O,O′-Oxydiethylene-diglycolic acid
- Synonyms
- 13887-98-4C8H14O7O,O′-Oxydiethylene-diglycolic acid

Chemical Synthesis
Utilised as a difunctional linker or building block in organic synthesis. Its ether linkages and terminal carboxylic acid groups allow for diverse chemical modifications and conjugations.
Chemical Biology & PEGylation
Serves as a component in the synthesis of polyethylene glycol (PEG) derivatives. These modified molecules are valuable in bioconjugation and drug delivery systems to improve pharmacokinetic properties.
Oligoethylene Glycol Functionalisation
A key intermediate for creating more complex functionalised oligoethylene glycols. These are employed in areas requiring specific solubility, complexation, or surface modification properties.
| Molecular weight | 222.19 |
|---|---|
| Empirical formula | C8H14O7 |
| Assay | ≥70% (T) |
| Grade | technical |
| Density | 1.3 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.470(lit.) |
| Impurities tested | ~10% water |

Hazard statements
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 41 |
| Safety statements (S) | 26-39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 3,6,9-Trioxaundecanedioic acid used for?
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3,6,9-Trioxaundecanedioic acid is primarily used as a building block in chemical synthesis, particularly for functionalising oligoethylene glycols and in PEGylation strategies within chemical biology.
What is the CAS number and chemical formula for 3,6,9-Trioxaundecanedioic acid?
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The CAS number is 13887-98-4, and the empirical formula (Hill notation) is C8H14O7.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,6,9-Trioxaundecanedioic acid in technical grade with an assay of ≥70% (T), containing approximately 10% water as an impurity. We do not represent this product as USP, BP, or EP grade.
How should 3,6,9-Trioxaundecanedioic acid be handled safely?
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This compound causes serious eye damage (H318). Appropriate personal protective equipment, including eyeshields and suitable gloves, should be worn. Ensure adequate ventilation and avoid contact with eyes and skin. Refer to the Safety Data Sheet for comprehensive handling instructions.
Is 3,6,9-Trioxaundecanedioic acid a controlled substance?
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Based on the provided data, 3,6,9-Trioxaundecanedioic acid is not listed as a controlled substance.
How can I request a sample or quote for 3,6,9-Trioxaundecanedioic acid?
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To request a sample or a quote, please contact our sales department via the website or email, providing your contact details and the product's CAS number (13887-98-4).
How is 3,6,9-Trioxaundecanedioic acid packed and exported?
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Products are carefully packed according to international shipping regulations for hazardous materials and exported globally by Tech Serve Solutions. Specific packaging details can be confirmed upon order.
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