An API impurities manufacturer from India and trusted partner for pharmaceutical impurity standards, working standards, and custom synthesis.
Swapreen Pharma Pvt. Ltd. was founded with a singular mission: to provide pharmaceutical companies, research institutions, and contract research organizations with high-quality API impurities, impurity standards, working standards, and reference standards from India.
Our team of expert chemists and pharmaceutical scientists brings decades of combined experience in organic synthesis, analytical chemistry, and regulatory compliance. As an impurity supplier India and international buyers can contact, we understand the critical role that reference standards play in pharmaceutical quality control and drug development.
Every compound we produce undergoes rigorous characterization using state-of-the-art analytical instruments including HPLC, NMR, MS, and IR spectroscopy, ensuring the accuracy and reliability your laboratory demands.
We believe that precision at the molecular level translates directly to patient safety and drug efficacy. Our API impurities, working standards, and custom synthesis services help pharmaceutical manufacturers maintain the highest standards of quality.
Quality First — Uncompromising commitment to purity, accuracy, and documentation in every product we deliver.
Scientific Excellence — Continuous investment in instrumentation, training, and research capabilities.
Customer Partnership — Long-term relationships built on technical expertise, reliability, and responsive support.
Global Reach — Serving pharmaceutical clients across 50+ countries with consistent, timely delivery.
Every batch characterized by HPLC, NMR, MS, and IR to guarantee identity, purity, and structural integrity.
Full CoA documentation meeting ICH Q3A/Q3B guidelines, USP, and EP requirements for regulatory submissions.
Milligram to kilogram-scale synthesis for impurities, metabolites, degradants, and novel research compounds.
Products shipped worldwide with appropriate cold-chain logistics and comprehensive documentation packages.
We maintain deep expertise across major pharmaceutical drug classes and therapeutic categories.
Macrolides, fluoroquinolones, beta-lactams, aminoglycosides
Biguanides, sulfonylureas, DPP-4 inhibitors, SGLT2 inhibitors
Propionic acid derivatives, COX-2 inhibitors, salicylates
ACE inhibitors, statins, beta-blockers, ARBs
Antidepressants, antipsychotics, anxiolytics, anticonvulsants
Azoles, polyenes, echinocandins
Nucleoside analogues, protease inhibitors, integrase inhibitors
Kinase inhibitors, alkylating agents, antimetabolites
Whether you need API impurities, working standards, catalog products, or custom synthesis from India, our team is ready to support your project.