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DL-Pantolactone

Also known as: DL-Pantoyl lactone, rac-Pantolactone, Dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone, Pantolactone, DL-alpha-Hydroxy-beta,beta-dimethyl-gamma-butyrolactone, (R)-(−)-Pantolactone, (R)-Pantolactone, DL-Lactone, DL-R-Butyrolactone, α-Hydroxy-β,β-dimethyl-γ-butyrolactone, 3-Hydroxy-4,4-dimethyldihydro-2(3H)-furanone, 2-Oxo-4,4-dimethyl-3-hydroxytetrahydrofuran

DL-Pantolactone (CAS 79-50-5) is a compound in the Esters category listed in the Jingsj chemical database. It has the molecular formula C6H10O3 and a molecular weight of 130.142 g/mol. Key properties include a melting point of 74-78 °C(lit.), a boiling point of 224.6±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 99.0±13.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
79-50-5
Jingsj CID
J-911680-5
Molecular Formula
C6H10O3
Molecular Weight
130.142 g/mol
Category
Esters
Last updated
8/21/2026

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Physicochemical Properties

Melting Point74-78 °C(lit.)
Boiling Point224.6±0.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point99.0±13.2 °C
Exact Mass130.062988
PSA49.83000
LogP-0.80
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.469

Activity & Biological Data

Additional Information[1]. Goodhue CT, et, al. The bacterial degradation of pantothenic acid. 3. Enzymatic formation of aldopantoic acid. Biochemistry. 1966 Feb;5(2):403-8. [2]. Shimizu S, et, al. Optical resolution of pantolactone by a novel fungal enzyme, lactonohydrolase. Ann N Y Acad Sci. 1996 Oct 12;799:650-8.

Frequently Asked Questions

What is the CAS number of DL-Pantolactone?

The CAS number of DL-Pantolactone is 79-50-5.

What are the molecular formula and molecular weight of DL-Pantolactone?

DL-Pantolactone has molecular formula C6H10O3 and molecular weight 130.142 g/mol.

What are the upstream and downstream products of DL-Pantolactone?

For DL-Pantolactone, Upstream Products: Dihydro-4,4-dimethyl-2,3-furandione, 2,4-Dihydroxy-3,3-dimethylbutanamide, Ethyl pyruvate; Downstream Products: 2,4-Dihydroxy-3,3-dimethylbutanamide, 3-Hydroxy-4,4-dimethylpyrrolidin-2-one, (R)-α-Acryloyloxy-β,β-dimethyl-γ-butyrolactone.

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

Last updated:

How to cite: Jingsj. "DL-Pantolactone (CAS 79-50-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-911680-5 (accessed 2026-11-06).

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