Description

Naphthol As-Mx-Phosphate Disodium Salt Nonahydrate CAS NO 36889-52-8 is a high-purity, water-soluble phosphate ester derivative of a naphthol AS-MX dye intermediate. This compound is valued for its role as a key chromogenic substrate in enzymatic assays, particularly for alkaline phosphatase, enabling sensitive detection in diagnostic and research applications. It is primarily utilized by manufacturers and research institutions in the life sciences, diagnostic kit production, and biochemical research sectors.

Application

• Chromogenic Substrate for Alkaline Phosphatase (AP): A critical component in ELISA, Western blotting, and immunohistochemistry (IHC) kits for colorimetric detection.
• Diagnostic Reagent Manufacturing: Used in the formulation of clinical diagnostic tests for various biomarkers and infectious diseases.
• Biochemical Research: Employed in enzymatic activity studies, signal amplification systems, and development of novel assay platforms.
• Histology and Cytology: Acts as a substrate for enzyme-labeled antibodies in tissue staining and cellular localization studies.
• Molecular Biology: Utilized in nucleic acid detection systems that employ enzyme-conjugated probes.
• Quality Control (QC) Standards: Serves as a reference standard for calibrating and validating diagnostic assays and laboratory instruments.

Basic Information

Product Name	Naphthol As-Mx-Phosphate Disodium Salt Nonahydrate
CAS No.	36889-52-8
Molecular Formula	C19H15NO6P · 2Na · 9H2O
Molecular Weight	Contact for details
Synonyms	Naphthol AS-MX Phosphate Disodium Salt; 3-Hydroxy-2-naphthoic acid 2,4-dimethylanilide phosphate disodium salt; Fast Red TR Salt phosphate substrate; Naphthol AS-MX phosphate; Alkaline Phosphatase Substrate (Naphthol AS-MX); Phosphoric acid mono-(4-hydroxy-3-[2-(2,4-dimethyl-phenylcarbamoyl)-phenylazo]-naphthalene-1-yl) ester disodium salt; AS-MX phosphate.
EINECS	Contact for details

Quality Control

Our Naphthol As-Mx-Phosphate Disodium Salt Nonahydrate is manufactured under strict quality systems to ensure batch-to-batch consistency and high performance in sensitive applications. Each lot undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to meet exacting standards for diagnostic and research use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This material is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent absorption of atmospheric moisture, which may affect performance and stability.

Specification

Item	Specification
Appearance	Off-white to light beige powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	Contact for details
Solubility (1% in Water)	Clear, yellow solution
Heavy Metals	< 10 ppm
Performance (Enzymatic)	Conforms to reference standard

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