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Market Research Group

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Kajal Khomane
Kajal Khomane

Rheumatology Small Molecule API

A rheumatology small molecule API refers to an Active Pharmaceutical Ingredient (API) in the form of a low-molecular-weight chemical compound used to treat rheumatic (autoimmune and inflammatory) diseases such as rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis.

These drugs are typically taken orally and work inside cells to modulate immune and inflammatory pathways.

What “small molecule API” means

  • Small molecule: Low molecular weight organic compound (usually <900 Da)

  • API (Active Pharmaceutical Ingredient): The biologically active substance in a drug formulation



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