Short answer: costs vary a lot depending on capacity, location, and regulatory requirements. A dedicated GMP API manufacturing plant for amiloride (Midamor) could range from tens of millions to several hundred million USD. Here are the main factors and rough ballparks.
What drives the cost
- Capacity targeted (annual kg or tonnage). Small-scale lines are cheaper; large-scale plants cost much more.
- Synthesis and purification complexity (number of steps, need for chiral resolution, special solvents, or heavy containment).
- Regulatory readiness and validation needs (FDA/EU GMP compliance, qualification/validation of processes, cleaning, QA/QC labs, stability storage).
- Utilities and site infrastructure (solvent recovery, water treatment, HVAC, explosion/containment controls, waste handling).
- Equipment and automation level (single-purpose reactor vs multi-purpose, online analytics, robust containment).
- Location and construction costs (geography, labor, EPC contracts, local regulations).
- Brownfield vs greenfield (existing facilities can reduce capex, but may require upgrades).
Very rough capital expenditure (CapEx) guidance
- Very small-scale or toll/contract manufacturing setup: roughly $20–60 million
- Commercial-scale facility aiming at modest but meaningful throughput (tens of kg to low tons per year): roughly $60–150 million
- Medium to high-scale facility (tens to hundreds of tons per year): roughly $150–350 million
- Large, high-capacity, globally compliant plant: $300 million and up (potentially well over that depending on capacity and complexity)
Ongoing operating costs (Opex)
- Raw materials and solvents, yield and process efficiency
- Utilities (steam, electricity, water treatment)
- Waste disposal and environmental controls
- Labor, maintenance, and quality assurance
- Compliance, validation, and analytical testing
Practical options
- Many firms use toll manufacturing or contract development/manufacturing organizations (CMOs) instead of building a new plant. This lowers upfront capex and shifts risk.
- If you want a rough, order-of-magnitude estimate today, I can tailor ranges if you provide:
- target annual production capacity (kg or tons)
- preferred location/region
- whether you need new greenfield facilities or could use a CMO
- any specific regulatory requirements (e.g., US/EU GMP, uniqueness of the salt form, etc.)
Want to share a few details (capacity, region, and whether you’re considering a greenfield plant or toll manufacturing)? I can give a more focused estimate and a cost breakdown.