β-Galactosidase
β-半乳糖苷酶
Also known as: Lactase, beta-Galactosidase, beta-D-galactosidase, beta-lactosidase, hydrolact, lactozym, maxilact, oryzatym
β-Galactosidase (CAS 9031-11-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C22H28O3 and a molecular weight of 340.456 g/mol. It is also known as Lactase, beta-Galactosidase and beta-D-galactosidase. Key properties include a boiling point of 477.8±33.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 256.9±21.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 9031-11-2
- Jingsj CID
- J-50295-1
- Molecular Formula
- C22H28O3
- Chinese Name
- β-半乳糖苷酶
- Molecular Weight
- 340.456 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 477.8±33.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 256.9±21.9 °C |
| Exact Mass | 340.203857 |
| LogP | 8.19 |
| Appearance | powder | slightly yellow |
| Vapor Pressure | 0.0±1.3 mmHg at 25°C |
| Refractive Index | 1.572 |
| Stability | Unit Definition One unit will hydrolyze 1.0 μmole of o-nitrophenyl β-D-galactoside to o-nitrophenol and D-galactose per min at pH 7.3 at 37 °C. Physical properties Tetramer molecular weight 465 kDa (subunits 116.3 kDa each) |
| Additional Property | 1% acetic acid: 1 mg/mL | Soluble in water |
Activity & Biological Data
| Additional Information | [1]. Douglas H Juers, et al. LacZ β-galactosidase: structure and function of an enzyme of historical and molecular biological importance. Protein Sci. 2012 Dec;21(12):1792-807. |
|---|
Frequently Asked Questions
What is the CAS number of β-Galactosidase?
The CAS number of β-Galactosidase is 9031-11-2.
What are the molecular formula and molecular weight of β-Galactosidase?
β-Galactosidase has molecular formula C22H28O3 and molecular weight 340.456 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "β-Galactosidase (CAS 9031-11-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-50295-1 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.