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Heterocyclic Compounds

Minoxidil

CAS: 38304-91-5

Overview

Minoxidil (CAS 38304-91-5 ), also marketed under the brand names Rogaine® and Regaine, is an active pharmaceutical ingredient used in topical and oral formulations targeting hair loss.

Originally developed as an antihypertensive, it is now the most commercially established API for androgenetic alopecia treatment across both prescription and OTC product categories.

In topical hair care, this compound is the active ingredient in scalp solutions and foams formulated at defined concentrations for daily consumer use by global manufacturers.

Pharmaceutical manufacturers incorporate it into finished-dose OTC products sold across regulated markets in North America, Europe, and Asia-Pacific regions for retail distribution.

Compounding pharmacies source the API to prepare customized topical preparations, including combination formulations with other actives to meet specific patient needs and requirements.

Oral tablets, prescribed off-label for hair loss, represent a growing demand segment driving procurement volumes for manufacturers and distributors in the pharmaceutical sector.

The material is supplied as a white to off-white crystalline powder. It is available in USP , BP , and Ph. Eur. grades to meet pharmaceutical manufacturing requirements.

Suppliers typically offer quantities ranging from research-scale packaging through bulk API volumes to support both clinical and commercial production cycles for global clients.

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Physical Properties

Melting Point248 °C
Boiling Point348.61°C (rough estimate)
Density1.1651 (rough estimate)
AppearanceWhite Crystalline Solid
ColorWhite
Formneat
Water SolubilitySoluble in water (2.2 mg/ml), 100% ethanol (29 mg/ml), propylene glycol, acetone, DMSO (6.5 mg/ml), and methanol.
Refractive Index1.7610 (estimate)

Trade & Regulatory

HS Code29335900
Storage Class11 - Combustible Solids
WGK (Germany)3

Other Names

Rogaine® | Regaine | Minoximen | Lonolox | Apo-gain | Alostil | 6-Piperidin-1-ylpyrimidine-24-diamine 3-oxide | 24-Diamino-6-piperidinopyrimidine 3-oxide

Related Products

Chemical Properties

CAS Number
38304-91-5
EC Number
253-874-2
Mol. Weight
209.25
HS Code
29335900

Industries

Documentation