tert-butyl (4R)-4-ethynyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate

Also known as: (R)-tert-Butyl 4-ethynyl-2,2-dimethyloxazolidine-3-carboxylate, (R)-2,2-Dimethyl-3-Boc-4-ethynyloxazolidine, (R)-2,2-Dimethyl-3-(N-Boc)-4-ethynyl-oxazolidine, (4R)-4-Ethynyl-2,2-dimethyl-3-oxazolidinecarboxylic acid 1,1-dimethylethyl ester, tert-butyl (4R)-4-ethynyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate

tert-butyl (4R)-4-ethynyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate (CAS 162107-48-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H19NO3 and a molecular weight of 225.284 g/mol. Key properties include a boiling point of 276.5±40.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 121.0±27.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 162107-48-4
Jingsj CID: J-1054347-2
Molecular Formula: C₁₂H₁₉NO₃
Molecular Weight: 225.284 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	276.5±40.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	121.0±27.3 °C
Exact Mass	225.136490
PSA	38.77000
LogP	1.66
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.490

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of tert-butyl (4R)-4-ethynyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate?

The CAS number of tert-butyl (4R)-4-ethynyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate is 162107-48-4.

What are the molecular formula and molecular weight of tert-butyl (4R)-4-ethynyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate?

tert-butyl (4R)-4-ethynyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate has molecular formula C12H19NO3 and molecular weight 225.284 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "tert-butyl (4R)-4-ethynyl-2,2-dimethyl-1,3-oxazolidine-3-carboxylate (CAS 162107-48-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1054347-2 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.