Description

4-Nitrophenyl α-D-Maltotetraoside is a specialized chromogenic substrate designed for the specific and sensitive detection of α-amylase activity. This compound matters because it provides a reliable, colorimetric readout essential for enzymatic assays in research and diagnostic settings. It is primarily needed by biochemical researchers, diagnostic kit manufacturers, and quality control laboratories in the food and pharmaceutical industries for precise enzyme quantification.

Application

• Clinical Diagnostics: As a key substrate in enzymatic assay kits for measuring human salivary and pancreatic α-amylase levels, aiding in the diagnosis of pancreatitis and other disorders.
• Biochemical Research: For the kinetic study and inhibition profiling of α-amylase enzymes in academic and industrial research laboratories.
• Pharmaceutical Quality Control: Used in potency testing and stability studies of enzyme-based pharmaceuticals and digestive aids.
• Food Science & Industry: Employed in assays to monitor α-amylase activity during grain malting, starch processing, and baking to ensure product consistency.
• Microbiology: As a differential substrate in microbial identification systems to detect bacterial strains that produce α-amylase.

Basic Information

Product Name	4-Nitrophenyl α-D-Maltotetraoside
CAS No.	66068-37-9
Molecular Formula	C30H43NO23
Molecular Weight	761.66 g/mol
Synonyms	p-Nitrophenyl α-D-maltotetraoside; PNP-α-G4; 4-Nitrophenyl-α-maltotetraose; α-4-Nitrophenyl maltotetraoside; 4-Nitrophenyl-α-D-maltotetraose; NPG4; PNPG4; 4-Nitrophenyl maltotetraoside
EINECS	Contact for details

Quality Control

Our 4-Nitrophenyl α-D-Maltotetraoside is produced under a rigorous quality management system. Each batch is subjected to comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and diagnostic applications. Certificates of Analysis (COA) with detailed chromatographic data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C in a dry environment. This product is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to moisture or light may affect stability and performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Specific Rotation	Contact for details
Solubility	Soluble in water, DMSO
Absorbance (Lambda max)	~305 nm (in aqueous solution)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.