Description

Benzoylpas Calcium Pentahydrate is the calcium salt of benzoyl para-aminosalicylic acid, a key intermediate in the synthesis of anti-tuberculosis agents. This compound is valued for its role in the production of second-line pharmaceutical treatments, offering a critical building block for complex organic synthesis. It is primarily required by pharmaceutical manufacturers and advanced research institutions developing chemotherapeutic agents.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of para-aminosalicylic acid (PAS) derivatives and other anti-tuberculosis drugs.
• Active Pharmaceutical Ingredient (API) Synthesis: Used in the manufacturing process of specific chemotherapeutic agents.
• Biochemical Research: Serves as a standard or reagent in studies targeting mycobacterial infections and drug resistance mechanisms.
• Fine Chemical Production: Employed as a specialized intermediate in the synthesis of other complex organic molecules for medicinal chemistry.

Basic Information

Product Name	Benzoylpas Calcium Pentahydrate
CAS No.	5631-00-5
Molecular Formula	C14H10CaN2O6 • 5H2O
Molecular Weight	452.42 g/mol (Anhydrous basis: 362.33 g/mol)
Synonyms	4-Benzamidosalicylate Calcium Salt Pentahydrate; Calcium Benzoyl-4-aminosalicylate Pentahydrate; Benzoyl-PAS Calcium; BZ-PAS Calcium; 4-(Benzoylamino)-2-hydroxybenzoic Acid Calcium Salt Pentahydrate; Benzoyl Para-Aminosalicylate Calcium Salt; Calcium 4-Benzamido-2-hydroxybenzoate Pentahydrate
EINECS	Contact for details

Quality Control

Our Benzoylpas Calcium Pentahydrate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing specific results for assay, impurities, and other critical parameters is provided with every shipment to support your quality assurance protocols.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Water Content (KF)	17.0% - 21.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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