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CAS 51-21-8

Fluorouracil (5-Fluorouracil)

Developmental_ToxicityTeratogen

Fluorouracil (5‑FU) is a potent chemotherapy drug that’s toxic to rapidly dividing cells. It’s widely used in hospitals and sometimes at home, so workers and caregivers can be exposed even if they aren’t the patient [1][2].

Where It Comes From

Cancer treatment (IV infusions, injections, topical creams); found in healthcare and home-care settings where the drug is prepared, given, or disposed [1][2].

How You Are Exposed

Touching contaminated vials, surfaces, or linens; breathing aerosols during compounding/administration; contact with a patient’s urine, stool, or vomit for about 48 hours after treatment [1].

Why It Matters

Can irritate skin and eyes; high or repeated exposure may cause nausea, headaches, and bone‑marrow suppression; it’s genotoxic and can harm fertility or a developing fetus [1][2][3].

Who Is at Risk

Pharmacists, nurses, physicians, veterinarians, environmental services and laundry staff, home caregivers, and especially people who are pregnant or trying to conceive [1][2].

How to Lower Your Exposure

Use closed systems and biological safety cabinets; wear chemotherapy-tested double gloves, gown, and eye/face protection; wash hands; handle patient waste with PPE for 48 hours; clean spills properly; dispose of drugs and contaminated items as hazardous waste—don’t flush [1][2][3].

References

  1. [1]CDC/NIOSH. Preventing Occupational Exposures to Antineoplastic and Other Hazardous Drugs in Health Care Settings. DHHS (NIOSH) Pub No. 2004‑165. https://www.cdc.gov/niosh/docs/2004-165/
  2. [2]CDC/NIOSH. NIOSH List of Antineoplastic and Other Hazardous Drugs in Healthcare Settings, 2016. DHHS (NIOSH) Pub No. 2016‑161. https://www.cdc.gov/niosh/docs/2016-161/
  3. [3]WHO IPCS. Fluorouracil Poison Information Monograph (PIM). https://www.inchem.org/ (search “Fluorouracil PIM”)

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