Description

5,5-Diphenylhydantoin Calcium Salt is the calcium salt derivative of the anticonvulsant agent phenytoin. This compound is a critical pharmaceutical intermediate and reference standard, valued for its stability and defined purity. It is primarily required by manufacturers and research institutions in the pharmaceutical, analytical chemistry, and life science sectors for the development and quality control of neurological and cardiovascular medications.

Application

• Pharmaceutical Intermediate: Key starting material or precursor in the synthesis of advanced pharmaceutical compounds, particularly those targeting the central nervous system.
• Analytical Reference Standard: Used in HPLC, GC, and other chromatographic methods for the identification, assay, and impurity profiling of phenytoin and related substances in drug substances and finished products.
• Biochemical Research: Employed in laboratory studies to investigate sodium channel modulation, neuronal excitability, and the mechanisms of action of anticonvulsant drugs.
• Active Pharmaceutical Ingredient (API) Manufacturing: Serves as a direct component in the formulation of certain niche pharmaceutical preparations.
• Quality Control & Assurance: Essential for in-house testing protocols within pharmaceutical quality control laboratories to ensure batch-to-batch consistency and regulatory compliance.

Basic Information

Product Name	5,5-Diphenylhydantoin Calcium Salt
CAS No.	17199-74-5
Molecular Formula	C30H22CaN4O4
Molecular Weight	542.61 g/mol
Synonyms	Phenytoin Calcium Salt; Calcium 5,5-Diphenyl-2,4-imidazolidinedione; Calcium Diphenylhydantoin; NSC 122063; 5,5-Diphenylimidazolidine-2,4-dione Calcium Salt; Calcium 5,5-Diphenylhydantoinate
EINECS	Contact for details

Quality Control

Our 5,5-Diphenylhydantoin Calcium Salt is manufactured and tested under a strict quality management system. Each batch is analyzed to meet high-purity standards suitable for pharmaceutical research and development. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to ensure full traceability and compliance with your internal specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect stability and handling properties.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Loss on Drying	≤2.0%
Heavy Metals	≤20 ppm
Residue on Ignition	Contact for details
Related Substances (HPLC)	Contact for details

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