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Isosorbide dinitrate (isordil) manufacturing plant cost?

See the DrugPatentWatch profile for Isosorbide

Quick Take‑Away

  • Capital Expenditure (CAPEX) for a mid‑scale, GMP‑compliant isosorbide dinitrate (ISDN) API plant typically falls in the $10 – $40 million range, depending on scale, location, and regulatory rigor.
  • Operating Expenditure (OPEX) will be roughly $5 – $15 million per year once the plant is running, driven by raw‑material, energy, labor, and compliance costs.
  • These figures are ball‑park estimates; the real numbers can swing up or down by 30 – 50 % based on:
    • Plant size (kg/day vs. tonnes/day)
    • Local real‑estate and labor costs
    • Choice of equipment (custom vs. off‑the‑shelf)
    • Environmental and safety infrastructure

1. What Makes the Cost Tick?

Driver Why it matters Typical cost impact
Raw materials Isosorbide (or isosorbide‑5‑bis‑(4‑nitro‑butyl)) + nitric acid, solvents, catalysts 15 – 30 % of annual OPEX
Reactor & process equipment Nitration reactors, heat exchangers, distillation units, solvent recovery 30 – 50 % of CAPEX
Cleanroom / GMP facilities Class 100‑class clean room, temperature‑controlled rooms, GMP‑qualified labs 10 – 20 % of CAPEX
Safety & environmental Explosion‑proof, fume‑hoods, wastewater treatment, hazardous waste handling 10 – 15 % of CAPEX
Utilities & Energy Water, steam, compressed air, electricity 5 – 10 % of OPEX
Labor & training Skilled chemists, operators, QA/QC personnel 10 – 15 % of OPEX
Regulatory & compliance GMP validation, FDA/EMA audits, ISO 9001, ISO 14001 5 – 10 % of CAPEX & OPEX
Contingency & design Engineering, procurement, construction (EPC) overhead, cost overruns 10 – 15 % of CAPEX

2. Typical Plant Scales

Scale Daily Output CAPEX (USD) Notes
Micro‑scale (1–10 kg/day) <$1 M Very small, often bench‑scale or pilot‑plant.
Small‑scale (10–100 kg/day) $5 – 10 M Often a single‑reactor batch plant with a modest purification train.
Medium‑scale (100 – 500 kg/day) $10 – 20 M One or two continuous reactors, parallel purification, basic solvent‑recovery loop.
Large‑scale (500 kg/day + ) $20 – 50 M+ Multi‑reactor, fully integrated purification, dedicated solvent‑recovery, large waste‑treatment capacity.

Tip: Most commercial API manufacturers settle in the medium‑scale range to keep CAPEX manageable while still achieving competitive cost‑of‑good‑manufacture.

3. Process Snapshot (Typical for ISDN)

  1. Nitration step

    • Isosorbide + concentrated nitric acid in a reactor, typically under controlled temperature (~30–50 °C).
    • Requires explosion‑proof design, inerting (nitrogen gas), and a cooling system.

  2. Quench & extraction

    • Neutralise excess acid with sodium hydroxide or bicarbonate.
    • Extract product into organic solvent (e.g., ethyl acetate, cyclohexane).

  3. Purification

    • Distillation or crystallisation (often crystallisation with antisolvent).
    • Optionally, recrystallisation to meet API specifications.

  4. Solvent Recovery

    • Distillation columns to recover and recycle organic solvents.
    • Water‑based waste streams treated in a wastewater plant.

  5. Drying & Formulation

    • Dry final API under controlled temperature/humidity.
    • Convert to powder or tablet‑grade form for downstream formulation.

  6. Quality Control

    • In‑process sampling, HPLC/GC, IR, DSC, impurity profiling.

4. Regulatory & Quality Landscape

Regulator Key requirements Typical cost impact
US FDA GMP, 21 CFR Part 210/211, USP <1225> (API), 21 CFR 211.103 (validation) Validation costs ($0.5–$2 M) + audit fees
EMA GMP, EMA Guideline on Validation, GMP Quality System Guidelines Validation & audit fees
IAC (International Agency for the Control of Drugs) GMP, ISO 9001/14001, ISO 13485 (if needed) 5 – 10 % of CAPEX
Local Environmental & Safety Hazardous waste permits, VOC limits, explosion control 5 – 10 % of CAPEX

Bottom line: GMP validation and audit costs are non‑trivial and usually included in the contingency portion of CAPEX.

5. Example Cost Breakdown (Medium‑Scale Plant)

Item Estimated Cost (USD)
Site & Land $1 M
Clean‑room & Building $4 M
Reactors & Process Equipment $6 M
Solvent‑Recovery & Waste Treatment $3 M
Utilities & Automation $2 M
Quality Control Lab $1 M
Safety & Environmental $1 M
Engineering & EPC $2 M
Contingency (15 %) $2 M
Total $22 M

This is a hypothetical, illustrative estimate. Actual figures depend heavily on local costs, scale, and design choices.

6. OPEX Snapshot (Annual)

Category Rough Share of OPEX Typical Annual Cost (USD)
Raw Materials 25 % $4 M
Utilities 10 % $1.6 M
Labor 15 % $2.4 M
Maintenance & Repairs 10 % $1.6 M
Quality & Regulatory 10 % $1.6 M
Other (insurance, misc.) 30 % $4.8 M
Total 100 % $15 M

7. How to Get a Real Quote

  1. Define Scope

    • Output (kg/day), batch vs. continuous, solvent choices, packaging.

  2. Engage an Engineering Firm

    • Look for firms with API plant experience (e.g., KBR, Jacobs, Fluor, Bechtel, or specialized pharma EPCs).
    • Request a Pre‑Feasibility Study (PFS).


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