β-Galactosidase (GAL), CAS No.9031-11-2

CAS: 9031-11-2 Cat. No.: G128642 EC Number: 232-864-1 PubChem CID: 439353
AVAILABLE TO ORDER
GRADE & PURITY EnzymoPure™ ? EnzymoPure™ — Aladdin's line of high-quality enzymatic solutions. Use when enzyme purity and defined activity drive assay or process performance. ≥50 units/mg dry weight, Originating from Escherichia coli
Accession #
P00722
Bioactivity
≥50 units/mg dry weight
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1KU
G128642-1KU
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$104.90
5KU
G128642-5KU
2
$401.90
Enter a quantity for the sizes you want to add.
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Why this grade

EnzymoPure™, ≥50 units/mg dry weight, Originating from Escherichia coli EnzymoPure™ for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 3 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

β-Galactosidase has a molecular weight of 540 kDa, and an optimum pH range of 6 to 8. Note: Product code BGC is not suitable for immunoconjugation applications due to the presence of ammonium sulfate.

Description Activity Code Size
Galactosidase, Beta
A partially purified, lyophilized powder.
Store at 2-8°C.
≥50 units per mg dry weight G128642
5 ku
Bulk
Galactosidase, Beta, Purified
Chromatographically purified. A suspension in 1.6M ammonium sulfate.
Store at 2-8°C.
≥300 units per mg protein G128643
1 ku
5 ku
Bulk

Specifications

Product Name
β-Galactosidase (GAL), CAS No.9031-11-2
Synonyms
β-D-Galactoside galactohydrolase | Lactase | β Galactosidase | beta-galactosidase | exo-(1->4)-beta-D-galactanase | lacZ | ECK0341
Grade
EnzymoPure™
Specifications & Purity
EnzymoPure™, ≥50 units/mg dry weight, Originating from Escherichia coli
Biochemical and Physiological Mechanisms
β-galactosidase cleaves lactose into its monosaccharide components, glucose and galactose. It also catalyses the transglycosylation of glucose into allolactose, the inducer of β-galactosidase, in a feedback loop.
Bioactivity
≥50 units/mg dry weight
Accession #
Predicted molecular weight
540 kDa
CAS
9031-11-2
Enzyme Commission Number
3.2.1.23
Molecule Type
Enzyme
Product Properties
NacresNA.54
Storage and Shipping
Concentration
≥50 units/mg dry weight, Originating from Escherichia coli
Storage
Store at 2-8°C
Shipped In
Wet ice
Unit definition
One Unit hydrolyzes one micromole of o-nitrophenyl-β-D-galactopyranoside per minute at 25°C, pH 7.5

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Associated Targets(Human)
ASGR1 Tbio Asialoglycoprotein receptor 1 (30 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ACR Tchem Acrosin (277 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
Lgals3 Galectin-3 (98 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

11 results found

Lot NumberCertificate TypeDateItem
K2514611Certificate of AnalysisNov 07, 2025 G128642
D2507497Certificate of AnalysisNov 13, 2024 G128642
G2516299Certificate of AnalysisNov 13, 2024 G128642
I2424436Certificate of AnalysisJul 09, 2024 G128642
E2427050Certificate of AnalysisMay 21, 2024 G128642
E2427051Certificate of AnalysisMay 21, 2024 G128642
L2306337Certificate of AnalysisNov 21, 2023 G128642
H2308606Certificate of AnalysisAug 02, 2023 G128642
D23031044Certificate of AnalysisNov 29, 2022 G128642
H2209430Certificate of AnalysisJul 08, 2022 G128642
C2226200Certificate of AnalysisMar 03, 2022 G128642

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Documents & Articles
Citations of This Product
References
1. Wang Jiawei, Du Yi, Du Jianxiu.  (2022)  Green-emission nitrogen-doped carbon quantum dots from alkaline N-methyl-2-pyrrolidinone for determination of β-galactosidase and its inhibitors.  MICROCHIMICA ACTA,  189  (8): (1-10).  [PMID:35840722] [10.1007/s00604-022-05378-3]
2. Chen Zhang, Ziyang He, Jinjin Liu, Yufei Zhang, Marco Marcucci, Yihuan Li, Zexin Lin.  (2025)  Improving Spirulina protein purification by addressing polysaccharides and alcohol-soluble components interference in ultrafiltration.  Future Foods,      [PMID:] [10.1016/j.fufo.2025.100581]
3. Yongming Wang, Yangcan Ming, Zhichao Yu, Zhenjin Xu, Minglang Zou, Cuiping Chen, Fang Luo, Da Huang, Na Wang, Zhenyu Lin, Zuquan Weng.  (2025)  ROS-Responsive Cationic Polymers with Intrinsic Anti-Inflammatory Activity for Intracellular Protein Delivery.  BIOMACROMOLECULES,      [PMID:40114391] [10.1021/acs.biomac.4c01593]
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