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Hydroxyurea

CAS 127-07-1

Also registered as 2 other CAS numbers

8029-68-3 · 532378-99-7

Hydroxyurea chemical structure

Concern score

Not assessed — no hazard data yet.

Hydroxyurea in plain language

What it is

Also known as Hydroxycarbamide · N-Hydroxyurea · Biosupressin · Carbamohydroxamic acid · Carbamohydroximic acid · Carbamoyl oxime

Show all 26 names

Carbamyl hydroxamate · Droxia · Hu · Hydrea · Hidrix · Hydreia · Hydroxicarbamidum · Hydroxycarbamine · Hydura · Hydurea · Litalir · N-Carbamoylhydroxylamine · Onco-carbide · Oxyurea · Siklos · Sq 1089 · Urea, hydroxy- · Xromi · hidroxicarbamida · sq 1089 or n-hydroxyurea

What it does

We don't have a plain-language description for Hydroxyurea yet.

Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. Hydroxyurea appears in these published regulatory listings.

  • In marketed US drugs

Recorded in these product areas

  • Found in consumer products
  • Pharma
  • Food
  • USEPAcommercial use observedEPA CPDat observed this chemical in 4 composition records across product categories including Food and drug, Batteries.
    • EPA CPDat observed this chemical in 4 composition records across product categories including Food and drug, Batteries.Source →
  • USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 21 active drug products and 21 total products.
    • FDA NDC lists this ingredient in 21 active drug products and 21 total products.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Hydroxyurea. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • JECFA

    Joint FAO/WHO Expert Committee on Food Additives

    No JECFA evaluation on file.

  • EFSA

    European Food Safety Authority

    No EFSA opinion on file.

Evidence & sources

No graded research studies for Hydroxyurea yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated March 8, 2019

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA National Drug Code Directory

    regulatory · updated 2027-12-31

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →
  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →
Reference links (2)
Openfda substance

accessdata.fda.gov

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often FDA National Drug Code directory has listed Hydroxyurea in a product composition. These are source records, not Greenveil catalog products.

Source records

21

See products using Hydroxyurea →

Catalog

Found in these products

Their ingredient lists include Hydroxyurea; each product's own rating depends on its whole formula, so it is shown on the product page, not here.