Premium Macitentan API in Pakistan: Reliable Raw Material Supply for Pharmaceutical Formulators

Product Name: Macitentan (Active Pharmaceutical Ingredient)

Supplier / Distributor: Morgan

Therapeutic Category: Dual Endothelin Receptor Antagonist (ERA)

Indications: Pulmonary Arterial Hypertension (PAH)

Compliance Notice: This technical data page is strictly for B2B pharmaceutical manufacturers, contract manufacturing organizations (CMOs), and analytical laboratories. The Macitentan distributed by Morgan is a highly purified Active Pharmaceutical Ingredient (API) intended exclusively for commercial formulation and laboratory R&D. It is not a finished drug product.

About Morgan: Morgan Chemicals (Pvt.) Ltd. is a pharmaceutical raw material trading and distribution company. We source APIs from DRAP-registered and internationally certified manufacturers and supply exclusively to licensed pharmaceutical companies, CMOs, and research facilities. We do not manufacture APIs or sell finished medicines.

Product Overview and Mechanism of Action

Macitentan is an orally active, non-peptide small-molecule Active Pharmaceutical Ingredient (API). In cardiovascular and pulmonary pharmacology, it is classified as a tissue-targeting, dual endothelin receptor antagonist (ERA). For pharmaceutical manufacturers developing advanced therapies for rare vascular diseases, this API represents a highly efficacious option for managing pulmonary arterial hypertension (PAH, WHO Group I).

The pathological progression of PAH is heavily driven by endothelin-1 (ET-1), an extremely potent vasoconstrictor peptide secreted by the vascular endothelium. In patients with PAH, the local endothelin system is heavily upregulated. ET-1 binds to two specific G-protein-coupled receptors: endothelin type-A (ETA) and endothelin type-B (ETB), which are located on the pulmonary arterial smooth muscle cells and fibroblasts. The activation of these receptors induces severe vasoconstriction, cellular proliferation, hypertrophy, and fibrosis, ultimately leading to right heart failure.

Macitentan functions by competitively binding to both ETA and ETB receptors, effectively preventing ET-1 from initiating this deleterious signaling cascade. Unlike older generations of ERAs, Macitentan possesses unique physicochemical properties that allow for high tissue penetration and sustained receptor occupancy. Furthermore, it undergoes hepatic metabolism to form an active metabolite (ACT-132577) which prolongs the pharmacological effect, allowing for a highly stable, once-daily dosing regimen.

For formulation scientists, integrating Macitentan API enables the production of targeted cardiovascular therapeutics designed to delay disease progression and improve exercise capacity. In commercial manufacturing, it is predominantly formulated as a 10 mg film-coated oral solid tablet.

Sourcing Macitentan in Pakistan: Morgan’s Supply Network

Developing and commercializing advanced cardiovascular formulations requires a highly resilient and traceable raw material pipeline. Procuring specialty ERAs for local commercial manufacturing frequently involves navigating extended lead times, stringent customs bottlenecks, and highly complex regulatory compliance. As a dedicated pharmaceutical raw material distributor, sourcing Macitentan Pakistan through Morgan’s localized distribution network mitigates these complex supply chain risks.

Morgan sources commercial-scale and pilot-scale quantities from global manufacturing partners operating in strict adherence to ICH Q7 Good Manufacturing Practice (GMP) guidelines. Partnering with Morgan as your primary supply vendor secures several operational provisions for your manufacturing facility:

• DRAP Submission Assistance: Morgan coordinates with DRAP-registered API manufacturers to obtain and forward the necessary compliance documentation on your behalf. This includes the open part of the Drug Master File (DMF), comprehensive impurity profiles, and stability data to strictly support your Drug Regulatory Authority of Pakistan (DRAP) dossier submissions.
• Supply Chain Stability: Our localized API inventory management eliminates international transit variables. Whether you are conducting pilot batches or scaling up a high-volume Macitentan api Pakistan procurement order, we help ensure that your commercial batch schedules and production timelines are met without costly raw material shortages.
• Batch-to-Batch Uniformity: Every shipment coordinated by Morgan includes a detailed Certificate of Analysis (CoA) issued by the original manufacturer. We ensure our supplied batches maintain consistent chemical purity, controlled moisture limits, and a precise particle size distribution (PSD) for predictable behavior during blending and tablet compression processes.

Technical Specifications for QA & R&D

The Macitentan API supplied by Morgan undergoes exacting analytical testing at the source to meet current international pharmacopeial standards.

• Chemical Name: N-[5-(4-bromophenyl)-6-{2-[(5-bromopyrimidin-2-yl)oxy]ethoxy}pyrimidin-4-yl]-N'-propylsulfamide
• CAS Number: 441798-33-0
• Appearance: White to off-white crystalline solid powder
• Molecular Formula: C19H20Br2N6O4S
• Molecular Weight: 588.27 g/mol
• Assay / Purity (HPLC): ≥ 99.0%
• Solubility Profile: Insoluble in water; slightly soluble in ethanol. Detailed solubility parameters across standard organic solvents and varying pH aqueous buffers are documented in the technical data sheet to assist analytical R&D teams with dissolution profiling.

Manufacturing and Handling Guidelines for Formulators

Because Macitentan is an Endothelin Receptor Antagonist, it carries a well-documented risk of embryofetal toxicity (teratogenicity). Facilities processing this API must enforce strict occupational exposure limits (OEL) to protect personnel on the manufacturing floor.

• Storage Conditions: Store the raw API powder in securely closed, light-resistant containers. Maintain climate-controlled conditions as specified by the batch protocol (typically controlled room temperature) to prevent degradation and maintain structural integrity.
• Occupational Safety: Personnel handling the pure API powder must follow advanced industrial containment protocols, particularly personnel of reproductive potential. Processing requires appropriate Personal Protective Equipment (PPE), including P3/N95 industrial dust masks or powered air-purifying respirators (PAPR), double chemical-resistant nitrile gloves, and full protective facility garments. Dispensing, micronization, milling, and blending stages must be executed within localized exhaust ventilation systems or dedicated negative-pressure containment isolators to entirely prevent the inhalation of airborne particulates and dermal absorption.

Distributor Disclaimer: Morgan Chemicals is a pharmaceutical raw material trading and distribution company. This API is sourced from DRAP-registered, GMP-certified manufacturing partners. Morgan Chemicals does not manufacture APIs, does not hold DRAP manufacturing registration, and does not sell finished medicines. This product is supplied exclusively to licensed pharmaceutical companies, CMOs, and research facilities in Pakistan — not for individual or consumer sale.