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2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone

CAS 81818-54-4 · 60/100 · High conf.

Concern score

60/100High concern based on regulatory listings.
High confidence

2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone in plain language

What it is

Also known as Phytonadione · Phytomenadione · Vitamin k · Phylloquinone · Vitamin K1 · 2-METHYL-3-PHYTYL-1,4-NAPHTHOQUINONE

Show all 14 names

3-PHYTYLMENADIONE · Vitamin k 1 · Aquamephyton · Konakion · Mephyton · Mono-kay · VEDA-K1 · VETA-K1

What it does

We don't have a plain-language description for 2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone yet.

Is it a concern?
High concern: no hazard classifications on record.

Why it's flagged

EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. 2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUEFSAEFSA opinionDietary reference values for vitamin K (EFSA NDA)
    • Dietary reference values for vitamin K (EFSA NDA)Source →
  • EUEFSAReport from international authorityOpinion of the Scientific Committee on Food on the Tolerable Upper Intake Level of Vitamin K (SCF)
    • Opinion of the Scientific Committee on Food on the Tolerable Upper Intake Level of Vitamin K (SCF)Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as mixture.
    • openFDA substance registry classifies this ingredient as mixture.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • JECFA

    Joint FAO/WHO Expert Committee on Food Additives

    No JECFA evaluation on file.

  • EFSA

    European Food Safety Authority

    • Dietary reference values for vitamin K (EFSA NDA)

      2017 · EU EFSA listing · Read the source →

    • Opinion of the Scientific Committee on Food on the Tolerable Upper Intake Level of Vitamin K (SCF)

      2003 · EU EFSA listing · Read the source →

Evidence & sources

No graded research studies for 2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone 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

  • EFSA OpenFoodTox

    regulatory · updated 2026-10-04

    Open →
  • EPA Chemical and Products Database

    exposure · updated 2019-03-06

    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 →

Suitability

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

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed 2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone in a product composition. These are source records, not Greenveil catalog products.

Named organisations

1

See products using 2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone →

Catalog

Found in these products

Their ingredient lists include 2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

Co-occurrence

Often appears with

Ingredients that frequently appear alongside 2-Methyl-3-(3,7,11,15-tetramethyl-2-hexadecen-1-yl)-1,4-naphthoquinone in the catalog.