Isothipendyl is a first-generation antihistamine belonging to the ethanolamine class of H1-receptor antagonists. It is primarily used for its antihistaminic and antipruritic properties, particularly in topical dermatological preparations.
Isothipendyl works by blocking histamine H1 receptors and thereby reducing histamine-mediated symptoms such as itching, redness and local irritation.
Isothipendyl is a specialized antihistamine pharmaceutical API manufactured through controlled chemical synthesis, purification and crystallization.
Quality evaluation may include identity, assay, related substances, water content, residual solvents, elemental impurities, residue on ignition and stability.
CAS Number: 122-63-4
Molecular Formula: C17H20N2S
Molecular Weight: 284.42 g/mol
Drug Class: Antihistamine
Pharmacological Class: H1-Receptor Antagonist
Therapeutic Class: Antiallergic / Antipruritic Agent
Therapeutic Area: Dermatology / Allergy
Isothipendyl acts primarily as a histamine H1-receptor antagonist.
By blocking H1 receptors, it reduces the effects of histamine released during allergic and inflammatory reactions. This can help reduce:
Its topical use provides localized antihistaminic and antipruritic activity.
Isothipendyl is primarily associated with topical treatment of pruritic and minor allergic skin conditions.
It may be formulated into:
Specific applications depend on the approved formulation and regulatory market.
As a first-generation H1 antihistamine, isothipendyl has affinity for histamine H1 receptors and may also exhibit other pharmacological properties associated with older antihistamines.
Its principal pharmaceutical interest is its local antihistaminic and antipruritic action.
Typical API manufacturing may involve:
Isothipendyl API quality evaluation may include:
Isothipendyl should be stored in a tightly closed container under controlled pharmaceutical storage conditions, protected from excessive heat, moisture and direct light. Final storage requirements should be established from validated stability studies.
Isothipendyl is relevant to research involving:
Isothipendyl is a first-generation H1 antihistamine with CAS Number 122-63-4, molecular formula C17H20N2S, and molecular weight 284.42 g/mol. It primarily acts by blocking histamine H1 receptors and is associated with topical antiallergic and antipruritic applications.
| Parameter | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Identification | IR & HPLC compliant |
| Assay (HPLC) | 98.0% – 102.0% |
| Loss on Drying | NMT 1.0% |
| Residue on Ignition | NMT 0.5% |
| Individual Impurity | NMT 0.5% |
| Total Impurities | NMT 1.0% |
| Water Content | NMT 1.0% |