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CAS 821-55-6

CAS 821-55-6 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 821-55-6
CAS 821-55-6PubChem CID 13187

2-Nonanone

Nonan-2-one is a methyl ketone that is nonane in which the methylene hydrogens at position 2 are replaced by an oxo group. It has a role as a plant metabolite. It derives from a hydride of a nonane. — ChEBI

IUPAC name
nonan-2-one
Molecular formula
C9H18O
Molecular weight
142.24 g/mol
Exact mass
142.135765193 Da
XLogP3
3.1
Topological polar surface area
17.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

Heptyl methyl ketoneMethyl heptyl ketonebeta-NonanoneKetone, heptyl methylMETHYL N-HEPTYL KETONEFEMA No. 2785NSC 14760ZE5K73YN2Z
16 more reported names
NSC-14760CHEBI:77927RefChem:88764212-480-0.beta.-Nonanone2-Nonanone-d5n-C7H15COCH3Methyl heptyl ketone; Methyl n-heptyl ketone; NSC 147602-Nonanone (natural)NonanoneEINECS 212-480-0UNII-ZE5K73YN2ZBRN 1743645Heptylmethylketonemethylheptyl ketoneNONANONE-2
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 821-55-6

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How CAS 821-55-6 is used on this site

CAS 821-55-6 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 821-55-6 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.