Skip to content
  • industrial

Isoquinoline, 3-methyl-

CAS 1125-80-0

Isoquinoline, 3-methyl- chemical structure

Concern score

Not assessed — no hazard data yet.

Isoquinoline, 3-methyl- in plain language

What it is

Also known as 3-METHYLISOQUINOLINE · 3-Methyl-isoquinoline · 3-Methyliso-quinoline · 5-20-07-00410 (Beilstein Handbook Reference) · Fvvxwrgaruacnw-uhfffaoysa-n · ISOQUINOLONE-3-METHYL

Show all 10 names

InChI=1/C10H9N/c1-8-6-9-4-2-3-5-10(9)7-11-8/h2-7H,1H · Isoquinoline, 3methyl · Methylisoquinoline, 3- · UNII-4QUO6NYB5J

What it does

Used in consumer products as a fragrance ingredient.

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

Regulation

No restrictions found. Isoquinoline, 3-methyl- appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Fragrance.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Fragrance.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Evidence & sources

No graded research studies for Isoquinoline, 3-methyl- yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated 2019-11-18

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    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 →

Suitability

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

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed Isoquinoline, 3-methyl- in a product composition. These are source records, not Greenveil catalog products.

Named organisations

2

Typical roles

Fragrance
See products using Isoquinoline, 3-methyl- →