Description

p-Nitrophenyl Stearate is a high-purity chemical ester, specifically the stearic acid ester of p-nitrophenol. This compound serves as a critical chromogenic substrate for the detection and kinetic analysis of lipase and esterase enzyme activity in biochemical research and industrial biocatalysis. It is essential for laboratories and manufacturers in the pharmaceutical, diagnostic, and biotechnology sectors requiring precise enzymatic assays and process development.

Application

• Enzymatic Assay Substrate: Primary chromogenic substrate for spectrophotometric determination of lipase, esterase, and cholesterol esterase activity.
• Biochemical Research: Used in kinetic studies, enzyme inhibition assays, and characterization of enzyme mechanisms in academic and industrial R&D.
• Diagnostic Reagents: A key component in the formulation of clinical diagnostic kits for measuring pancreatic function and lipid metabolism disorders.
• Industrial Biocatalysis: Employed in screening and monitoring enzymatic activity during the development of biocatalytic processes for synthesis.
• Quality Control Testing: Used in pharmaceutical and food industry QC labs to test for enzymatic activity in raw materials or finished products.
• Surfactant & Polymer Research: Acts as a model compound in studies involving ester hydrolysis and interfacial catalysis.

Basic Information

Product Name	p-Nitrophenyl Stearate
CAS No.	14617-86-8
Molecular Formula	C₂₄H₃₉NO₄
Molecular Weight	405.57 g/mol
Synonyms	4-Nitrophenyl Octadecanoate; 4-Nitrophenyl Stearate; Stearic Acid 4-Nitrophenyl Ester; p-Nitrophenyl Octadecanoate; PNPS; Lipase Substrate; p-NPS; Octadecanoic Acid 4-Nitrophenyl Ester
EINECS	Contact for details

Quality Control

Our p-Nitrophenyl Stearate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing including HPLC for purity, IR for identification, and loss on drying to ensure it meets the high standards required for sensitive enzymatic applications. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing batch-to-batch consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. The product is light-sensitive and should be handled under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	68°C - 72°C
Loss on Drying	≤ 0.5%
Solubility	Soluble in organic solvents (e.g., DMSO, ethanol, acetone)

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