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Research draft

terpene

vr.tr.terpene · PHY.MAT

Let an agent explain terpenes, relay structure, biosynthesis, classification and uses from chemistry and natural products sources, describe the compounds the registry aliases name, and distinguish terpenes from terpenoids, essential oils as mixtures and cannabinoid marketing claims, without unsupported health claims.

Thing Registry Physical world and living systems

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent explain terpenes, relay structure, biosynthesis, classification and uses from chemistry and natural products sources, describe the compounds the registry aliases name, and distinguish terpenes from terpenoids, essential oils as mixtures and cannabinoid marketing claims, without unsupported health claims.

A large class of natural hydrocarbons built from isoprene units, produced mainly by plants and some insects, classified by number of units as monoterpenes, sesquiterpenes, diterpenes, triterpenes and polyterpenes such as natural rubber, including compounds such as camphene, also named 7,7-dimethyl-2-methylenebicyclo[2.2.1]heptane, and complex polycyclic terpenes such as stellatatriene; terpenes give many plants their aromas and are used in fragrances, flavours and as precursors of terpenoids and steroids.

What it is for: Not applicable; a class of natural compounds.

It can be explain structure and classes; relay biosynthesis and uses; describe named compounds; distinguish related concepts.

Distinguishing features

Isoprene units

Plant aromas

Huge diversity

Precursors of steroids

What it looks like

Not a visible object; many are volatile aromatic liquids.

Physical character

isoprene unit: C5H8 note

monoterpene: C10 note - two units

natural rubber: cis-polyisoprene note - polyterpene

known terpenoids: over 80000 count - estimates

How it is recognised

Isoprene-based natural hydrocarbons

Monoterpene, diterpene, triterpene, polyterpene, camphene, stellatatriene

Terpenoids contain oxygen or modifications; essential oils are mixtures; cannabinoid marketing uses the term loosely

Related models

is a kind of - in registry terms

isoprenoid

is built from -

isoprene

is contrasted with -

terpenoid

includes -

limonene

In practice

Families and kinds

hemiterpenes and monoterpenes such as limonene and camphene

sesquiterpenes

diterpenes

triterpenes including squalene

polyterpenes such as natural rubber

complex polycyclic terpenes

Standards and regulation

Fragrance allergen labelling rules

Food flavouring regulations

Failure modes and hazards

Unsupported health claims

Allergic reactions to fragrance terpenes

Confusing terpenes and terpenoids

Also called

7,7-dimethyl-2-methylenebicyclo[2.2.1]heptanepolyterpenetriterpenemonoterpenediterpenestellata-2,6,19-trienebeta-geranylfarnesenebeta-heptaprenesesquarterpenepolyisoprenyl phosphatessesterterpenesgermacrane sesquiterpenestetraterpenessesquiterpenehemiterpeneacyclic monoterpenecadinenecarenepolycyclic sesquiterpenesmonocyclic sesquiterpenescycloaraneoseneent-atisereneisoelisabethatriene(S,1Z,6Z)-8-Isopropyl-1-methyl-5-methylenecyclodeca-1,6-diene(1R,4R,5S)-(-)-guaia-6,10(14)-dieneγ-selinene(-)-5-epi-eremophilene(+)-eremophilene(-)-alpha-amorphenebeta-cubebene(12E)-labda-8(17),12,14-triene(-)-α-cubebenebeta-hexaprenepentacyclic triterpenesthujenesp-menthane monoterpeneochtodane1-ethyl-1,3-dimethylcyclohexanecyclohexane monoterpenesbicyclic monoterpenes

+70

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Understand What terpenes are.

Science.

Definition

Definition.

Definition

Definition.

  1. What are terpenes, and how do they differ from terpenoids, essential oils and marketing uses of the term? definition
  2. Is the question about chemistry, biology, uses or a health claim? boundary

Classes

Classes and compounds.

Classes

Classes.

  1. What are mono, di, tri and polyterpenes, camphene and stellatatriene? definition
  2. Which entry fits the specific compound? action
Chemistry Chemistry.

Science.

Biosynthesis

Biosynthesis.

Biosynthesis

Biosynthesis.

  1. How do the mevalonate and MEP pathways make terpenes? provenance
  2. Which references are standard? provenance

Structure

Structure.

Structure

Structure.

  1. How does the isoprene rule describe terpene structures? provenance
  2. Which sources are cited? provenance
Uses Uses and claims.

Attribution.

Industry

Industry.

Industry

Industry.

  1. How are terpenes used in fragrances, flavours, solvents and rubber? provenance
  2. Which entry fits essential oil? action

Claims

Health claims.

Claims

Claims.

  1. What does evidence say about health claims for terpenes, with findings attributed? provenance
  2. Is the presentation free of unsupported claims? boundary
Context Ecology and history.

Context.

Ecology

Ecology.

Ecology

Ecology.

  1. Why do plants produce terpenes, and how do they affect the atmosphere? provenance
  2. Which entry fits biogenic volatile organic compound? action

History

History.

History

History.

  1. How did Wallach and Ruzicka develop terpene chemistry? provenance
  2. Which entry fits Leopold Ruzicka? action

What the second pass must settle

  • Should monoterpene and triterpene be separate primary entries?
  • How should natural products sources be linked?
  • The registry entry has merged aliases naming specific compounds; should they be split off?
Draft as JSON