CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
CAS 0 records

CAS 64091-91-4

CAS 64091-91-4 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

Check this CAS numberBrowse annexes

Chemical identity and properties

PubChem 2D chemical structure for CAS 64091-91-4
CAS 64091-91-4PubChem CID 47289

4-(Methylnitrosamino)-1-(3-Pyridyl)-1-Butanone

IUPAC name
N-methyl-N-(4-oxo-4-pyridin-3-ylbutyl)nitrous amide
Molecular formula
C10H13N3O2
Molecular weight
207.23 g/mol
Exact mass
207.100776666 Da
XLogP3
0.8
Topological polar surface area
62.6 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

4-(N-Nitrosomethylamino)-1-(3-pyridyl)-1-butanone4-(N-Methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanone4-(N-nitrosomethylamino)-1-(3-pyridyl)butan-1-oneCHEBI:326927S395EDO614-[methyl(nitroso)amino]-1-(pyridin-3-yl)butan-1-one4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanoneNicotine-derived nitrosamine ketone
16 more reported names
4-Methylnitrosamino-1,3-pyridyl-1-butanone4-n-nitrosomethylamino-1-3-pyridyl-1-butanoneNNK cpd4-(methyl(nitroso)amino)-1-(pyridin-3-yl)butan-1-oneRefChem:259414'-(nitrosomethylamino)-1-(3-pyridyl)-1-butanoneNNKNNK (carcinogen)1-Butanone, 4-(methylnitrosoamino)-1-(3-pyridinyl)-4-(N-Nitroso-N-methylamino)-1-(3-pyridyl)-1-butanoneN-methyl-N-(4-oxo-4-(pyridin-3-yl)butyl)nitrous amideN-Methyl-N-[4-oxo-4-(pyridin-3-yl)butyl]nitrous amide4-Methylnitrosoamino-1-(3-pyridinyl)-1-butanoneN-Nitrosonornicotine-ketone4-(methylnitrosoamino)-1-(3-pyridinyl)-1-butanoneN-Methyl-N-nitroso-4-oxo-4-(3-pyridyl)butyl amine
Open full PubChem recordPubChem annotations3D structure image
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 64091-91-4

0 total
No records found for this CAS number.

How CAS 64091-91-4 is used on this site

CAS 64091-91-4 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 64091-91-4 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.