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KNOWLEDGE GRAPH · MOLECULES

Molecules named in the evidence.

86 odorant and volatile molecules are named in 34 of SmellBook’s 56 VERIFIED claims, for 36 Atlas entries. Each is listed only where a claim names it, in the role that claim states.

How a claim can name a molecule

Key odorant
The claim identifies the molecule as a key, primary or most potent odorant of what was studied, or as making the largest or an important contribution to its aroma. These findings usually come from sensory methods such as gas chromatography–olfactometry, odour activity values or recombination tests.
Linked to the odour
The claim names the molecule as one potent or aroma-active compound among many, as linked to or correlated with an odour note, or as possibly responsible for part of the aroma. This is weaker than a key odorant.
Major component
The claim names the molecule among the most abundant compounds of what was measured, such as an essential oil or the air around living flowers. Abundance alone does not mean the molecule drives the smell.
Reported volatile
The claim names the molecule among the volatiles detected or released, without stating its role in the smell.

Named for more than one smell

All 86 molecules, A to Z

Where the evidence names no specific molecule yet

These VERIFIED claims name kinds of compounds, count compounds without naming them, or are not about compounds. Their sources may identify specific odorants that a new, narrow claim could record. This is a research agenda, not a finding.

Names kinds of compounds

The claim names classes of compounds, such as esters or pyrazines, but no single molecule. Open question: Which specific odorants in these classes does the source identify?

Counts compounds without naming them

The claim says compounds were found or matter, but names none. Open question: Which compounds does the source name as the key odorants?

Not a chemical claim

The claim is about a term, a method or how people experience a smell, not about compounds. Open question: Is there registered research on the compounds behind this smell?

WHAT THIS LIST MEANS

SmellBook lists a molecule only where a VERIFIED claim names it, in the role and scope that claim states. A molecule reported in a smell's evidence is not the whole smell: most smells come from many compounds together, and the studies measured particular samples, such as one cultivar, an essential oil or a cooked product.