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Diphenhydramine Hydrochloride (HCl) EP – Product Description
Product Name: Diphenhydramine Hydrochloride (HCl).Grade: EP (European Pharmacopoeia) / Pharma Grade.CAS Number: 147-24-0.Molecular Formula: C₁₇H₂₁NO · HCl.Molecular Weight: ~291.82 g/mol.Appearance: White to off-white crystalline powder.

Description:
Diphenhydramine Hydrochloride (EP grade) is a high-quality active pharmaceutical ingredient (API) widely used in the formulation of antihistamine products. As a first-generation H1 receptor antagonist, it exhibits potent antihistaminic activity that helps relieve symptoms of allergies, hay fever, and the common cold, such as runny nose, sneezing, itching, and watery eyes. Its EP certification ensures compliance with the European Pharmacopoeia quality and purity standards, making it suitable for use in regulated markets.
Key Features & Benefits:Pharmacopoeial Compliance: Conforms to European Pharmacopoeia (EP) standards.High Purity: Consistent assay and quality for reliable formulation performance.Versatile API: Suitable for a wide range of finished formulations.Broad Application: Used in tablets, capsules, syrups, and injectable products.Stability: Excellent physical and chemical stability under recommended storage.
Packaging & Storage:Standard Packaging: 25 kg / 50 kg HDPE bags, drums, or as per customer requirement.Storage Conditions: Store in a cool, dry place, protected from moisture and sunlight.Shelf Life: As per manufacturer specification and EP guidelines.

Diphenhydramine HCl API – Active Pharmaceutical Ingredient
Product Name: Diphenhydramine Hydrochloride (HCl)CAS Number: 147-24-0Synonyms: 2-(Diphenylmethoxy)-N,N-dimethylethanamine HydrochlorideMolecular Formula: C₁₇H₂₁NO · HClMolecular Weight: ~291.82 g/molAppearance: White to off-white crystalline powder.Grade: USP / BP / EP / Pharmaceutical GradePurity: Typically ≥ 99 % (with COA, MSDS available)

Description:
Diphenhydramine HCl is a first-generation antihistamine API widely used in the pharmaceutical industry for the manufacture of allergy relief, sleep aid, anti-motion sickness, and cough-cold products. As a potent H₁-histamine receptor antagonist, it blocks the action of histamine released during allergic reactions, helping to alleviate symptoms like sneezing, itching, watery eyes, and runny nose. Its chemical form (hydrochloride salt) enhances stability and solubility for formulation purposes.
Key Features & Properties:Function: Antihistamine (H1 blocker) with sedative and anticholinergic properties.Applications:• Allergy relief tablets, capsules, syrups• OTC sleep aid formulations• Motion sickness and anti-nausea products• Pulmonary and cold combination products• Topical itch relief preparations (where applicable) Solubility: Slight to moderate solubility in water and common organic solvents depending on grade and formulation requirements.
Storage & Handling:Store in a cool, dry place away from direct sunlight and moisture. Maintain within recommended temperature conditions to preserve potency and stability.
Typical Packaging:Available in 25 kg drums with protective double liners or customized bulk packaging as per purchaser requirement.