Description

Pamoic Acid, Na CAS NO 7681-47-2 is the sodium salt form of pamoic acid, a naphthoic acid derivative known for its low solubility and utility in forming stable complexes. This compound serves as a crucial intermediate and precipitating agent in the synthesis of various pharmaceutical salts, enhancing the stability and bioavailability of active ingredients. It is primarily required by manufacturers in the pharmaceutical, fine chemical, and research sectors for developing long-acting drug formulations and analytical reagents.

Application

• Pharmaceutical Salt Formation: Used as a counterion to create insoluble, long-acting depot formulations of basic drugs (e.g., antipsychotics, antiparasitics).
• Chemical Intermediate: Serves as a key building block in the synthesis of more complex organic molecules and specialty chemicals.
• Analytical Reagent: Employed in laboratory settings for the precipitation and purification of amines and other organic compounds.
• Veterinary Medicine: Utilized in the development of sustained-release formulations for animal health applications.
• Research & Development: A valuable tool in pre-formulation studies and pharmacokinetic research within academic and industrial R&D.

Basic Information

Product Name	Pamoic Acid, Na
CAS No.	7681-47-2
Molecular Formula	C23H14Na2O6
Molecular Weight	432.33 g/mol
Synonyms	Sodium Pamoate; 4,4'-Methylenebis(3-hydroxy-2-naphthoic acid) disodium salt; Embonic acid sodium salt; Pamoic Acid Disodium Salt; Acidum Pamoicum Natricum; 2-Hydroxy-3-naphthoic acid, 4,4'-methylenedi-, disodium salt
EINECS	231-673-0

Quality Control

Our Pamoic Acid, Na is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide Certificates of Analysis (COA) detailing key parameters such as assay, related substances, and residual solvents. While produced to high standards, this product is typically offered as a technical or research grade; specifications for pharmaceutical (USP/EP) compliance should be confirmed upon inquiry.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to yellow-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Residue on Ignition	10.0% - 12.0% (as Na2O)
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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