India-based manufacturer and exporter of high-purity API impurities, impurity standards, working standards, intermediates, and custom synthesis materials for overseas pharmaceutical QC, R&D, CRO, and sourcing teams.
Compounds in Portfolio
Purity Standards
Export Markets Supported
Years Experience
From milligram-scale custom synthesis to repeat supply discussions, Swapreen Pharma supports overseas buyers seeking API impurities, working standards, drug intermediates, and analytical documentation from India.
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 manufacturer and exporter from India supplying pharmaceutical API impurities, impurity standards, working standards, and custom synthesis materials for global pharmaceutical quality control, analytical testing, sourcing, and regulatory-support workflows.
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, impurity standards, and reference standards from India. Don't see what you need? We offer custom synthesis.
Browse priority export markets for API impurities, working standards, and custom synthesis enquiries from outside India.
API impurity standards manufacturer and supplier support for USA buyers.
View market page →API impurity standards supplier from India for UK pharma and lab teams.
View market page →API impurity standards and working standard enquiry support for Canadian buyers.
View market page →Analytical impurity standards and custom synthesis support for German labs.
View market page →Export enquiry support for UAE distributors, importers, and laboratories.
View market page →API impurity and reference standard enquiries for Australian pharma teams.
View market page →Request a custom quote online. Our team responds within 24–48 hours with pricing and availability.