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High-Purity Raw Materials for Active Pharmaceutical Ingredients

Meet regulatory expectations and reduce supply chain risk with Avantor’s active pharmaceutical ingredients (API) portfolio. Under the trusted J.T. Baker® brand, Avantor delivers ultra-high purity, cGMP-compliant solvents, acids, and bases well-suited for API production.

Advance your formulation with our APIs

Solvents for API applications

Avantor offers a curated suite of J.T. Baker raw materials commonly used in API manufacturing:

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Support protein stability and prevent degradation with GMP-ready buffers that maintain pH and ionic strength—foundational for consistent biomanufacturing workflows.

View All Buffers

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Achieve safe and effective final formulations with high-quality production chemicals that help control osmolarity, tonicity, and solubility.


Browse Production Chemicals

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Save time and resources with ready-to-use, critical reagent-grade and cGMP-compliant buffers. Avantor offers rapid supply, flexible volumes, and rigorously tested lots so you can confidently meet your manufacturing goals.

Explore Hydrated Buffers