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CAS 59-99-4

CAS 59-99-4 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 59-99-4
CAS 59-99-4PubChem CID 4456

Neostigmine

IUPAC name
[3-(dimethylcarbamoyloxy)phenyl]-trimethylazanium
Molecular formula
C12H19N2O2+
Molecular weight
223.29 g/mol
Exact mass
223.144652853 Da
XLogP3
1.5
Topological polar surface area
29.5 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

EustigminEustigmineProstigmineVagostigmineProstigminNeostigminJuvastigminm-Trimethylammoniumphenyldimethylcarbamate
16 more reported names
3-Trimethylammoniumphenyl N,N-dimethylcarbamateNeostigmine ionNeostigmine cation3-[(dimethylcarbamoyl)oxy]-N,N,N-trimethylaniliniumNeostigmine (cation)(m-Hydroxyphenyl)trimethylammonium dimethylcarbamate3982TWQ96G(m-Hydroxyphenyl)trimethylammonium dimethylcarbamate (ester)Ammonium, (m-hydroxyphenyl)trimethyl-, dimethylcarbamate (ester)Benzenaminium, 3-(((dimethylamino)carbonyl)oxy)-N,N,N-trimethyl-CHEBI:7514ProzerinBenzenaminium, 3-[[(dimethylamino)carbonyl]oxy]-N,N,N-trimethyl-(3-(dimethylcarbamoyloxy)phenyl)-trimethylazanium3-((dimethylcarbamoyl)oxy)-N,N,N-trimethylaniliniumRefChem:55701
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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 59-99-4

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How CAS 59-99-4 is used on this site

CAS 59-99-4 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 59-99-4 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.