4,7,13,18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosane
4,7,13,18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosane (CAS 31250-06-3), with the molecular formula C14H28N2O4 and a molecular weight of 288.38 g/mol, is a bicyclic aza-crown ether. Known commercially as Kryptofix® 211, this compound functions effectively as a complexing agent. It is frequently employed in chemical synthesis and as a synthetic reagent due to its ability to chelate metal cations.
- IUPAC
- Kryptofix® 211
- Synonyms
- 18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosaneKryptofix® 211
![4,7,13,18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosane (C14H28N2O4) — chemical structure, CAS 31250-06-3; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F31250-06-3.png&w=3840&q=75)
Chelation and Complexation
This aza-crown ether is highly effective at complexing and sequestering metal cations. Its unique bicyclic structure provides a specific cavity size, making it useful in applications requiring selective ion binding.
Chemical Synthesis
As a specialised reagent, 4,7,13,18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosane can be used to facilitate or modify reaction pathways. It may be employed in phase-transfer catalysis or to stabilise reactive intermediates in organic synthesis.
Crown Ether Applications
Belonging to the class of crown ethers, this compound exhibits properties characteristic of these macrocyclic polyethers. Its applications align with those of similar compounds in facilitating ion transport and modifying the solubility of ionic species.
| Molecular weight | 288.38 |
|---|---|
| Empirical formula | C14H28N2O4 |
| Assay | 90% |
| Boiling point | 130 °C/0.002 mmHg(lit.) |
| Density | 1.097 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5057(lit.) |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H332Harmful if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36/37/38 |
| Safety statements (S) | 23-26-28-37/39 |
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 4,7,13,18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosane used for?
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4,7,13,18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosane is primarily used as a complexing agent, in chemical synthesis, and as a synthetic reagent, often functioning as a specialised crown ether.
What are the CAS number and molecular formula?
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The CAS number for 4,7,13,18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosane is 31250-06-3, and its molecular formula is C14H28N2O4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound with a typical assay of 90%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the main hazards associated with this chemical?
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This compound is classified as harmful if swallowed, in contact with skin, or if inhaled. It also causes skin irritation, serious eye irritation, and may cause respiratory irritation. Appropriate personal protective equipment, including gloves, eyeshields, and respiratory protection, should be used.
Is this chemical packed, shipped, or exported globally?
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Yes, Tech Serve Solutions specialises in the global supply, export, and distribution of fine chemicals and laboratory reagents.
How can I request a sample or quote?
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Please contact our sales team directly through our website or by telephone to request a sample or a detailed quotation for 4,7,13,18-Tetraoxa-1,10-diazabicyclo[8.5.5]eicosane.
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