2-ethoxy-3,4-dihydro-2H-pyran

C7H12O2

CAS103-75-3

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Identification

CAS Number
103-75-3
EC Number
203-141-8
UN Number
1993
PubChem CID
7676

Physical-chemical properties

Molecular Formula
C7H12O2
Molar Mass
128.17 g/mol
IUPAC Name
2-ethoxy-3,4-dihydro-2H-pyran

Chemical Identifiers

InChI
InChI=1S/C7H12O2/c1-2-8-7-5-3-4-6-9-7/h4,6-7H,2-3,5H2,1H3
InChI Key
VZJFPIXCMVSTID-UHFFFAOYSA-N

Overview

2-ethoxy-3,4-dihydro-2H-pyran (CAS 103-75-3) is a cyclic ether compound with protective properties commonly used in organic synthesis applications. This specialized chemical intermediate belongs to the family of dihydropyran derivatives and serves as an important building block in various synthetic processes. With the molecular formula C7H12O2 and a molecular weight of 128.17 g/mol, this compound features a six-membered ring structure containing both oxygen atoms that contribute to its unique reactivity profile. The ethoxy substituent enhances its stability and solubility characteristics, making it particularly valuable for specific industrial applications. From a safety perspective, 2-ethoxy-3,4-dihydro-2H-pyran is classified under ADR Class 3, indicating its flammable nature, though it does not carry specific GHS pictograms or signal words under current classification systems. This relatively favorable safety profile makes it more manageable compared to some related compounds in industrial settings. Proper handling procedures should still be followed, including appropriate ventilation and fire prevention measures typical for flammable organic solvents. The compound finds primary application in pharmaceutical intermediate synthesis, where its protecting group capabilities are particularly valued. It is also utilized in specialty chemical manufacturing and research applications requiring selective functional group protection. These applications often overlap with those of related compounds such as 2-ethylbutyl acetate, which shares similar synthetic utility in different chemical contexts. Industrial users appreciate its consistent performance in multi-step synthetic sequences, where reliability and predictable reactivity are essential. OYSI maintains reliable supply chains for this specialized chemical intermediate to support European industrial customers' technical requirements.

Safety & Classification

No Hazard Classification

This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.

Transport (ADR)

UN Number1993
ADR Class3
Packing GroupIII
Tunnel CodeD/E
Proper Shipping Name2-Ethoxy-3,4-dihydro-2H-pyran
Marine PollutantNo

Frequently Asked Questions

What is 2-ethoxy-3,4-dihydro-2H-pyran?

2-ethoxy-3,4-dihydro-2H-pyran is an organic chemical compound with the molecular formula C7H12O2 and CAS number 103-75-3. This heterocyclic compound features a six-membered ring containing one oxygen atom, with an ethoxy substituent. With a molecular weight of 128.17 g/mol, it belongs to the pyran family of compounds and serves various applications in chemical synthesis and industrial processes.

What are the physicochemical properties of 2-ethoxy-3,4-dihydro-2H-pyran?

2-ethoxy-3,4-dihydro-2H-pyran is a liquid organic compound at room temperature with moderate volatility. As a cyclic ether derivative, it exhibits typical properties of oxygen-containing heterocycles, including good solubility in organic solvents. The compound's structure, featuring both ether linkages and a saturated ring system, influences its reactivity and physical characteristics, making it suitable for various synthetic applications.

What is 2-ethoxy-3,4-dihydro-2H-pyran used for?

2-ethoxy-3,4-dihydro-2H-pyran serves as an important intermediate in organic synthesis and pharmaceutical manufacturing. This compound is commonly used in the production of fine chemicals, as a protecting group reagent in synthetic chemistry, and as a building block for more complex molecules. Its unique structure makes it valuable in the synthesis of various organic compounds, particularly in pharmaceutical and agrochemical industries.

How to handle 2-ethoxy-3,4-dihydro-2H-pyran safely?

2-ethoxy-3,4-dihydro-2H-pyran should be handled with standard laboratory safety precautions including wearing appropriate personal protective equipment such as safety glasses, gloves, and lab coats. Work in well-ventilated areas or under fume hoods to minimize exposure to vapors. Avoid contact with skin, eyes, and clothing. Use proper handling techniques for organic chemicals and ensure good ventilation during use to prevent accumulation of vapors.

How to store 2-ethoxy-3,4-dihydro-2H-pyran correctly?

2-ethoxy-3,4-dihydro-2H-pyran should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Keep containers properly labeled and store away from incompatible materials such as strong oxidizing agents. Maintain storage temperatures according to supplier specifications and ensure proper secondary containment. Regular inspection of containers for leaks or deterioration is recommended for safe storage.

What to do in case of contact with 2-ethoxy-3,4-dihydro-2H-pyran?

In case of skin contact with 2-ethoxy-3,4-dihydro-2H-pyran, immediately wash the affected area with plenty of soap and water for at least 15 minutes. For eye contact, flush thoroughly with water for several minutes and seek medical attention if irritation persists. If inhaled, move to fresh air immediately. Remove contaminated clothing and wash before reuse. Seek medical advice if symptoms develop or persist after exposure.

How to dispose of 2-ethoxy-3,4-dihydro-2H-pyran properly?

2-ethoxy-3,4-dihydro-2H-pyran must be disposed of according to local and national waste regulations as an organic chemical waste. Contact licensed waste disposal companies for proper handling and treatment. Do not pour down drains or dispose of in regular trash. Small quantities may be suitable for incineration at appropriate facilities. Always consult safety data sheets and local environmental authorities for specific disposal requirements in your region.

How to transport 2-ethoxy-3,4-dihydro-2H-pyran?

2-ethoxy-3,4-dihydro-2H-pyran is classified under ADR Class 3 (flammable liquids), Packing Group III for transportation purposes. This classification requires appropriate packaging, labeling, and documentation according to dangerous goods regulations. Shipments must comply with international transport regulations including proper packaging specifications, hazard labels, and shipping papers. Only trained personnel should handle transportation arrangements for this chemical substance.

Is 2-ethoxy-3,4-dihydro-2H-pyran subject to specific regulations?

2-ethoxy-3,4-dihydro-2H-pyran is subject to standard chemical regulations including REACH registration requirements in Europe for commercial use. The compound is not classified as a Substance of Very High Concern (SVHC) and has no specific GHS hazard classification. However, it must comply with general chemical safety regulations, proper labeling requirements, and workplace safety standards. Users should maintain safety data sheets and follow good chemical hygiene practices.

Where to buy 2-ethoxy-3,4-dihydro-2H-pyran in Europe?

2-ethoxy-3,4-dihydro-2H-pyran is available through OYSI, a trusted European distributor of specialty chemicals and industrial raw materials. OYSI provides reliable supply chains across Europe with proper documentation, quality assurance, and regulatory compliance. For purchasing inquiries, technical specifications, availability, and delivery options, contact OYSI directly through their official channels to discuss your specific requirements and obtain current pricing information.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.