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Merck
CN

N2001

Neostigmine bromide

≥98% (HPLC and titration), acetylcholinesterase inhibitor, powder

Synonym(s):

3-(N,N-Dimethylcarbamoyloxy)-N,N,N,-trimethylanilinium bromide, Prostigmine

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About This Item

Empirical Formula (Hill Notation):
C12H19BrN2O2
CAS Number:
114-80-7
Molecular Weight:
303.20
NACRES:
NA.77
PubChem Substance ID:
24277854
UNSPSC Code:
12352200
EC Number:
204-054-8
MDL number:
MFCD00011795

Key Documents

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Product Name

Neostigmine bromide, ≥98% (HPLC and titration), powder

InChI key

LULNWZDBKTWDGK-UHFFFAOYSA-M

InChI

1S/C12H19N2O2.BrH/c1-13(2)12(15)16-11-8-6-7-10(9-11)14(3,4)5;/h6-9H,1-5H3;1H/q+1;/p-1

SMILES string

[Br-].CN(C)C(=O)Oc1cccc(c1)[N+](C)(C)C

assay

≥98% (HPLC and titration)

form

powder

color

white

mp

175-177 °C (lit.)

solubility

H2O: 1 g/mL
ethanol: soluble

Quality Level

100

Gene Information

human ... ACHE(43)

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Application

Neostigmine bromide has been used as an acetyl cholinesterase (AChE) inhibitor:
  • to control reaction specificity of acetylcholinesterase in coronal organ of Botryllus schlosseri.
  • to study its effects on abnormal contraction of pyloric circular smooth muscle strips (PCSMS).
  • to study its effects on depolarization of bag cell neurons.

Biochem/physiol Actions

Neostigmine bromide is a quaternary amine. It is involved in elongating and boosting the muscarinic and nicotinic effects of acetylcholine by inhibiting cholinesterase activity. It is used in anesthesia to reverse the neuromuscular blockade produced by competitive neuromuscular blockers.
Reversible inhibitor of acetylcholinesterase that is similar to eserine, but does not cross the blood-brain barrier.
Reversible inhibitor of acetylcholinesterase; does not cross the blood-brain barrier.

Features and Benefits

This compound is featured on the Acetylcholine Synthesis and Metabolism page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

pictograms

Skull and crossbonesHealth hazard
GHS06,GHS08

signalword

Danger

Hazard Classifications

Acute Tox. 1 Inhalation - Acute Tox. 2 Dermal - Acute Tox. 2 Oral - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX2160
MKCT8470
MKCQ8728
MKCQ0887
MKCQ0888

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M Weinstock et al.
The Journal of pharmacology and experimental therapeutics, 218(2), 504-508 (1981-08-01)
The influence of physostigmine was studied on the effect of morphine on the cardiovascular and respiratory systems in conscious rabbits. Morphine (4 mg/kg i.v.) caused analgesia, bradycardia, hypotension and respiratory depression, as indicated by a fall in respiratory rate of
A F Khorshid et al.
Biosensors & bioelectronics, 51, 143-149 (2013-08-21)
A novel, simple, rapid, selective and sensitive method for the determination of neostigmine (Ns) ion in its bulk powder, different pharmaceutical dosage forms, and biological fluids (plasma and urine) using four modified carbon paste electrodes was developed. Sensor 1 is
Differentiation and induced sensorial alteration of the coronal organ in the asexual life of a tunicate
Manni L, et al.
Integrative and Comparative Biology, 58(2), 317-328 (2018)
Effect of aurantii fructus immaturus flavonoid on the contraction of isolated gastric smooth muscle strips in rats
Wu Z, et al.
Evidence-Based Complementary and Alternative Medicine : ECAM, 2016(2), 317-328 (2016)
Modified carbon paste sensor for the potentiometric determination of neostigmine bromide in pharmaceutical formulations, human plasma and urine
Khorshid, A F and Issa, Y M
Biosensors And Bioelectronics, 51, 143-149 (2014)
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