Ether Diamines and Amino-PEG Linkers for Functional Intermediates
Ether diamines and amino-PEG linkers are diamine intermediates that contain ether or polyether segments within their molecular structure. These compounds combine amine functionality with oxygen-containing chain units, which may influence polarity, flexibility, solubility profile and downstream derivatization behavior in chemical synthesis routes.
These materials may be evaluated as hydrophilic diamine linkers, polyether amine intermediates or functional building blocks for API intermediate synthesis, fine chemical synthesis and specialty organic synthesis. Depending on molecular structure, they may support chain extension, spacer-type design, polarity adjustment or further amine-based transformations.
Within the broader family of amine derivatives for API synthesis and specialty chemical intermediates, ether diamines and amino-PEG materials provide options for buyers seeking intermediates with defined diamine functionality and ether-chain features.
What Are Ether Diamines and Amino-PEG Linkers?
Ether diamines are diamine compounds containing one or more ether linkages within the carbon chain between amine groups. This structure distinguishes them from simple alkyl diamines and may provide different polarity, chain flexibility and solubility behavior in synthesis applications.
Polyether diamines contain multiple ether units and terminal or functional amine groups. Amino-PEG linkers are amino-functional polyether intermediates with defined chain lengths, such as Amino-PEG4-amine and Amino-PEG5-amine. These products are usually reviewed according to identity, chain length, amine functionality, water content and impurity profile.
N,N-Diethylethylenediamine is not an ether diamine or PEG linker. It is a short-chain diamine containing tertiary amine functionality and is included in this application segment as a related diamine intermediate for organic synthesis and fine chemical intermediate sourcing.
Why These Intermediates Matter in Specialty Synthesis
Diamine functionality can support reactions such as amidation, acylation, reductive amination, nucleophilic substitution, salt formation or other amine-based transformations. Ether and polyether chain units may help adjust polarity, chain flexibility or spacing between functional groups, depending on the target synthesis route.
In API intermediate synthesis, fine chemical synthesis and specialty organic synthesis, ether diamines and amino-PEG diamines may be selected where terminal amine functionality, defined chain length, flexible spacing or polyether structure is required. Their exact role depends on specification, process conditions and downstream requirements.
Key quality attributes often reviewed during sourcing include assay, amine value, water content, related amine impurities, residual solvents, color, odor, physical state and batch consistency. For PEG-type materials, chain length distribution or molecular weight distribution may also need to be confirmed.
Product Comparison Table
The following products represent selected short-chain diamine, ether diamine, polyether diamine and amino-PEG diamine intermediates used in specialty synthesis sourcing.
| Product | CAS No. | Structural Type | Typical Sourcing Focus | Product Page |
|---|---|---|---|---|
| N,N-Diethylethylenediamine | 100-36-7 | Short-chain diamine with tertiary amine functionality | Assay, water content, related amines, residual solvents, color, odor | N,N-Diethylethylenediamine CAS 100-36-7 |
| 1,2-Bis(2-aminoethoxy)ethane | 929-59-9 | Ether diamine intermediate | Assay, amine value, water content, appearance, related amines | 1,2-Bis(2-aminoethoxy)ethane CAS 929-59-9 |
| 1,11-Diamino-3,6,9-trioxaundecane | 929-75-9 | Polyether diamine intermediate | Assay, amine value, water content, viscosity, color, documentation | 1,11-Diamino-3,6,9-trioxaundecane CAS 929-75-9 |
| Amino-PEG4-amine | 68960-97-4 | Defined-chain amino-PEG diamine | Assay, identity, chain length distribution, water content, color | Amino-PEG4-amine CAS 68960-97-4 |
| Amino-PEG5-amine | 72236-26-1 | Defined-chain amino-PEG diamine | Assay, identity, chain length distribution, water content, color | Amino-PEG5-amine CAS 72236-26-1 |
Key Product Groups
Short-Chain Diamine Intermediates
N,N-Diethylethylenediamine is a tertiary amine-containing diamine intermediate. It is not an ether diamine or PEG linker, but it is often reviewed together with other diamine intermediates in organic synthesis and fine chemical sourcing.
Sourcing teams typically focus on assay, water content, related amine impurities, residual solvents, color, odor, physical state, packaging compatibility and transport classification. Because short-chain amines may have strong odor or specific handling requirements, packaging and shipment feasibility should be confirmed before order placement.
Ether Diamines and Polyether Diamines
1,2-Bis(2-aminoethoxy)ethane and 1,11-diamino-3,6,9-trioxaundecane belong to the ether diamine and polyether diamine categories. These compounds contain flexible ether-chain structures and terminal amine functionality, making them useful where diamine reactivity and ether-chain features are required in downstream synthesis.
These products may be considered where flexible diamine structure, ether functionality, chain extension or polarity adjustment is needed. Sourcing considerations often include assay, amine value, water content, related amines, appearance, color, viscosity or physical state, and documentation availability.
Amino-PEG Diamine Linkers
Amino-PEG4-amine and Amino-PEG5-amine are defined-chain amino-PEG diamines with terminal amine functionality. These materials may be evaluated where defined polyether chain length, flexible linker structure or polyether diamine functionality is required in functional intermediate synthesis.
For amino-PEG diamine products, buyers usually need to confirm assay, identity, chain length distribution, water content, color, storage condition, physical state, packaging and documentation availability. Any special requirement for chain length, amine value or molecular weight distribution should be stated before quotation.
Sourcing Considerations for Ether Diamines and Amino-PEG Linkers
Procurement teams generally review both technical specifications and practical supply conditions when sourcing ether diamines, polyether diamines or amino-PEG diamines.
Purity and assay: Confirm the required assay level and analytical method according to downstream process needs.
Amine value: Amine value or active amine content may be important for selected diamine and polyether diamine products.
Water content: Moisture may affect reaction performance, storage stability or customer acceptance.
Related amines: Related amine impurities should be reviewed according to specification and synthesis requirements.
Residual solvents: Residual solvent control may be important for fine chemical and intermediate applications.
Color and appearance: Appearance requirements should be confirmed according to customer specification and intended use.
Odor: Some amine products may have characteristic odor, which can affect packaging and handling requirements.
Physical state and viscosity: Confirm whether the material is liquid, viscous liquid, solid, semi-solid, solution or other form.
Chain length or molecular weight distribution: For PEG-type materials, chain length distribution or molecular weight distribution may need to be confirmed.
Storage conditions: Storage should be reviewed according to SDS, supplier recommendation and product stability.
Moisture sensitivity: Some polyether amines or PEG-type materials may require moisture-protective packaging.
Packaging compatibility: Packaging should match product properties, order quantity, odor, viscosity and transport requirements.
Dangerous goods classification: Transport classification should be confirmed case by case according to the latest SDS and shipment route.
COA and SDS: COA and SDS may be available for confirmed products, subject to product and supplier confirmation.
Lead time: Availability may depend on production schedule, warehouse stock, batch release and inland transport.
Export documentation: Export documents, HS code reference and transport documents should be reviewed before shipment.
Sample or small-batch packaging: Small-pack options should be confirmed according to product properties and supplier arrangement.
Packaging and Logistics
Packaging for ether diamines and amino-PEG linkers should be selected according to physical state, viscosity, odor, moisture sensitivity, hazard classification, supplier recommendation and order quantity. Liquid products may be supplied in suitable small bottles, small drums, 25 L drums, 200 L drums or other packaging formats depending on product properties and supplier confirmation.
Solid, viscous or PEG-type materials may require sealed bottles, jars, inner bags, fiber drums, moisture-protective packaging or other suitable formats. Some products may require odor control, corrosion-resistant packaging, UN-approved packaging or specific transport labels depending on SDS and transport classification.
Sea, air, courier, LCL or FCL shipment options must be evaluated case by case. Some products may not be suitable for certain transport routes or small-volume courier shipment depending on dangerous goods classification, package size and destination requirements.
Common trade terms may include FOB China port, FCA warehouse, CFR/CIF destination port or DAP destination where applicable. Import clearance, local duties, taxes and destination compliance should be confirmed by the buyer or their appointed import agent.
Ether Diamines and Amino-PEG Linkers Available from Aure Chemical
Based on the above application segment, Shandong Aure Chemical can support sourcing and supply coordination for selected ether diamines, amino-PEG diamines and related diamine intermediates used in organic intermediate and specialty chemical synthesis. Related products include N,N-diethylethylenediamine, 1,2-bis(2-aminoethoxy)ethane, 1,11-diamino-3,6,9-trioxaundecane, Amino-PEG4-amine and Amino-PEG5-amine.
For suitable products, Aure Chemical can help review product name, CAS number, target specification, quantity, packaging requirement, destination and required documentation. Available support may include quotation, specification confirmation, COA/SDS coordination, packaging review and export logistics discussion.
Product availability, lead time, specification, packaging, documentation and shipment feasibility are subject to product and supplier confirmation. Buyers are encouraged to provide clear technical and commercial requirements before quotation.
Request Information or Quotation
To discuss ether diamine or amino-PEG linker requirements, please provide the following information when sending an inquiry:
Product name and CAS number
Target purity, assay, amine value or specification
Required quantity for sample, trial order, batch order or annual consumption
Destination port or delivery address
Preferred trade term, such as FOB China port, FCA warehouse, CFR/CIF destination port or DAP destination where applicable
Preferred packaging or drum size
Required documents, such as COA, SDS, TDS, product overview or supplier questionnaire
Expected purchase schedule or project timeline
Any chain length, water content, amine value or molecular weight distribution requirements for PEG-type products
Contact Aure Chemical for Ether Diamines and Amino-PEG Linkers