Manufacturer & global supplier of high-purity API impurities, working standards, and intermediates — trusted by research labs and pharma companies for consistent, reliable results.
Compounds in Portfolio
Purity Standards
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Years Experience
From milligram-scale custom synthesis to large-scale manufacturing — we support every stage of pharmaceutical research and development.
Certified process-related impurities, degradation products, and genotoxic impurities at ≥95% to ≥99.9% purity. Full CoA with HPLC, NMR, MS, and IR data supplied with every batch.
Learn more →High-purity in-house reference standards calibrated against USP, EP, and BP primary standards. Ideal for routine QC, method validation, dissolution testing, and system suitability.
Learn more →Key drug intermediates for API manufacturing and clinical development — including chiral intermediates with high enantiomeric excess, available from gram to multi-kilogram scale.
Learn more →Bespoke synthesis of compounds not available in our catalogue — novel molecules, rare impurities, isotopically labelled analogues, and proprietary intermediates under full NDA protection.
Learn more →Swapreen Pharma Pvt. Ltd. is a leading manufacturer and supplier of pharmaceutical API impurities and working standards used in pharmaceutical quality control, analytical testing, and regulatory compliance.
Advanced Synthesis Techniques — Each compound produced using modern analytical instruments to ensure purity, accuracy, and reliability.
International Compliance — Products meet ICH, USP, EP, and other international regulatory standards for pharmaceutical testing.
Custom Impurity Synthesis — Specialized services for metabolites, degradation products, and unique research compounds.
API Impurities & Reference Standards in catalogue
Countries with active pharmaceutical clients
Average purity achieved across our catalogue
Average quote turnaround for custom compounds
A selection from our catalogue of API impurities and reference standards. Don't see what you need? We offer custom synthesis.
Request a custom quote online. Our team responds within 24–48 hours with pricing and availability.