(R)-2-Vinyloxirane
(R)-2-Vinyloxirane (CAS 62249-81-4), a chiral epoxide with the formula C4H6O and a molecular weight of 70.09 g/mol, is a valuable building block in asymmetric synthesis. This optically active compound serves as a key intermediate for introducing specific stereochemistry in complex organic molecules. It is widely utilised in chemical research and development for the synthesis of pharmaceuticals and other fine chemicals.
- IUPAC
- (R)-3,4-Epoxy-1-butene
- Synonyms
- (R)-3,4-Epoxy-1-butene

Chiral Building Block
(R)-2-Vinyloxirane is employed as a chiral synthon in the stereoselective construction of complex organic molecules. Its epoxide ring can be opened regioselectively and stereoselectively, allowing for the introduction of desired functionalities with defined stereochemistry.
Asymmetric Synthesis Intermediate
This compound is a crucial intermediate in asymmetric synthesis, facilitating the creation of enantiomerically pure compounds. It is particularly useful in the development of pharmaceutical intermediates and active pharmaceutical ingredients (APIs) where specific stereoisomers are required for biological activity.
Organic Synthesis Reagent
As a reactive epoxide, it participates in various organic transformations, including nucleophilic ring-opening reactions. This versatility makes it a useful reagent for academic and industrial research focused on novel chemical entities.
| Molecular weight | 70.09 |
|---|---|
| Empirical formula | C4H6O |
| Assay | ≥95.0% (sum of enantiomers, GC) |
| Boiling point | 66 °C(lit.) |
| Density | 0.870 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.417 |
| Optical activity | [α]20/D −21.0±1°, c = 1% in pentane(lit.)[α]20/D −21.0±1°, c = 1% in pentane |
| Storage temperature | 2-8°C |

Hazard statements
- H225Highly flammable liquid and vapour
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -50 °C / -58 °F |
| Transport (UN / ADR) | UN 1993BF 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 11 |
| Safety statements (S) | 16 |
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 (R)-2-Vinyloxirane used for?
+
(R)-2-Vinyloxirane is primarily used as a chiral building block and intermediate in asymmetric synthesis for the creation of complex organic molecules, particularly in pharmaceutical research and development.
What are the CAS number and chemical formula for (R)-2-Vinyloxirane?
+
The CAS number is 62249-81-4, and the chemical formula is C4H6O.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies (R)-2-Vinyloxirane with an assay of ≥95.0% (sum of enantiomers, GC). We do not represent this product as USP, BP, or EP grade.
How should (R)-2-Vinyloxirane be handled safely?
+
(R)-2-Vinyloxirane is a highly flammable liquid and vapour (H225). Handle with extreme caution, ensuring adequate ventilation and using appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator. Store at 2-8°C.
Is (R)-2-Vinyloxirane packed and shipped internationally by TSS?
+
Yes, Tech Serve Solutions exports chemicals globally. (R)-2-Vinyloxirane is shipped as UN 1993, BF 3, Packing Group II, requiring adherence to strict international shipping regulations for flammable liquids.
How can I request a sample or quote for (R)-2-Vinyloxirane?
+
To request a sample or a quote, please contact our sales team through the website or by phone, providing the product name and CAS number (62249-81-4).
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis