Hydroxycitronellal

The teaching muguet accord uses it as its heart, by perfumery convention. No odour description is filed for it here. Its identity is PubChem’s.

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In your room

A model you can turn here or place in your room with a phone. Nothing is fetched until you ask; nothing is stored or sent. Everything you can place in a room.

molecule

The Hydroxycitronellal molecule

A computed 3D conformer , modeled, not a photograph of a molecule. PubChem CID 7888.

To place it in your room, open this page on an iPhone or iPad (AR Quick Look) or an Android phone (Google Scene Viewer). The files below open in any 3D viewer.

PubChem’s computed 3D conformer of Hydroxycitronellal (CID 7888, conformer 00001ED000000001): the shape a computer model gives the molecule, not an experimental structure and not a picture of a real molecule. Ball and stick: 10 carbon, 2 oxygen; the 20 hydrogen atoms are left out for clarity. The balls are drawn smaller than the atoms’ real reach; a double bond is two sticks, side by side.

In the room

scaled so that one ångström is 4 cm (about 400 million times life size): 11.9 cm tall, 41.3 cm across

Atoms

10 carbon, 2 oxygen · 11 bonds between them

Colours

carbon: ink sepia-2; oxygen: rose highlight; bonds: brass. Colour is a convention here and never carries the meaning alone: the letters on the drawing and this list say which atom is which.

Source

PubChem, CID 7888 (National Center for Biotechnology Information), its computed 3D conformer as filed on this record

Licence

PubChem’s data are public (NCBI); the model and its drawing were made for this site from those coordinates

The files GLB 21 KB · USDZ 47 KB · the drawing (SVG) 4 KB

The record

Each field carries its evidence: open a chip for the source, the quoted words and the confidence. A field with nothing behind it says so and stays empty.

Name

Hydroxycitronellal

documented

Hydroxycitronellal

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

confidence A

CAS

107-75-5

documented

107-75-5

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

among the CID’s PubChem synonyms, and PubChem resolves it back to this CID

confidence A

PubChem CID

7888

documented

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

confidence A

Formula

C10H20O2

documented

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

confidence A

Molecular weight

172.26

documented

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

g/mol, as PubChem states it

confidence A

IUPAC name

7-hydroxy-3,7-dimethyloctanal

documented

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

confidence A

SMILES

CC(CCCC(C)(C)O)CC=O

documented

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

confidence A

InChIKey

WPFVBOQKRVRMJB-UHFFFAOYSA-N

documented

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

confidence A

Odour threshold

withheld: not on record

withheld

no odour-threshold source on record

Descriptors

not on record

not on record

no descriptor on record: no house wording on a data file, no descriptor source filed

Volatility class

not on record

not on record

no volatility class on record for hydroxycitronellal (the house’s volatility table has no entry)

Regulation

• IFRA Standard: Hydroxycitronellal
• Regulation (EC) No 1223/2009 on cosmetic products

documented

IFRA-043, EU-2009-1223: each record above quotes its entry.

3D structure

PubChem computed 3D conformer · 32 atoms, 31 bonds

modeled

PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal · read 2026-09-30

PubChem’s computed 3D conformer (the 3D SDF record): a model, drawn schematically, not an experimental structure

confidence A

Wikidata

Q25100775

documented

P662 PubChem CID: 7888

WD-1 · Wikidata (Wikimedia Foundation) · read 2026-09-30

the item states PubChem CID 7888 (P662) and the record’s InChIKey (P235); found by the statement search haswbstatement:P662=7888

confidence A

Odeuropa

EOKG concept

documented

{"concept":"http://data.odeuropa.eu/vocabulary/dravnieks/odorants/82","relation":"owl:sameAs","via":"Q25100775","label":"Hydroxy Citronellal","scheme":"http://data.odeuropa.eu/vocabulary/dravnieks/odorants/"}

ODEUROPA-1 · Lisena, P., Ehrhart, T., Troncy, R · read 2026-09-30

the EOKG concept “Hydroxy Citronellal” states owl:sameAs Q25100775 and the record’s CAS (wdt:P231)

confidence A

Occurs in

In teaching accords

• A muguet (lily of the valley), and what regulation took from it

Sources

1. PUBCHEM-7888 · PubChem Compound Summary for CID 7888, Hydroxycitronellal (7-hydroxy-3,7-dimethyloctanal). National Center for Biotechnology Information (NCBI), U.S. National Library of Medicine; live database, read 2026-09-30 through the PUG REST endpoints (no account): https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/107-75-5/cids/JSON · https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/7888/property/MolecularFormula,MolecularWeight,IUPACName,Title,SMILES,InChIKey/JSON · https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/7888/synonyms/JSON · https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/7888/SDF?record_type=3d. pubchem.ncbi.nlm.nih.gov/compound/7888 · read 2026-09-30 · public domain (US government work, NCBI/NLM); acknowledgement requested , cite PubChem
2. WD-1 · Wikidata (Wikimedia Foundation): the items named on each record (each statement read with its references), read 2026-09-30. www.wikidata.org · read 2026-09-30 · CC0 1.0
3. ODEUROPA-1 · Lisena, P., Ehrhart, T., Troncy, R. European Olfactory Knowledge Graph (EOKG), Odeuropa project. Zenodo, 2024. doi:10.5281/zenodo.10709703. SPARQL endpoint https://data.odeuropa.eu/repositories/odeuropa, read 2026-09-30. doi.org/10.5281/zenodo.10709703 · read 2026-09-30 · CC BY 4.0

Our text and structure are CC BY 4.0; quoted source text stays under its owners’ terms.

this record as data: /data/molecule/hydroxycitronellal.json · version 3 · updated 2026-10-01 · confidence A