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2D Structure
Also known as: Eustigmin, Eustigmine, Prostigmine, Vagostigmine, 59-99-4, Prostigmin
Molecular Formula
C12H19N2O2+
Molecular Weight
223.29  g/mol
InChI Key
ALWKGYPQUAPLQC-UHFFFAOYSA-N
FDA UNII
3982TWQ96G

A cholinesterase inhibitor used in the treatment of myasthenia gravis and to reverse the effects of muscle relaxants such as gallamine and tubocurarine. Neostigmine, unlike PHYSOSTIGMINE, does not cross the blood-brain barrier.
Neostigmine is a Cholinesterase Inhibitor. The mechanism of action of neostigmine is as a Cholinesterase Inhibitor.
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
[3-(dimethylcarbamoyloxy)phenyl]-trimethylazanium
2.1.2 InChI
InChI=1S/C12H19N2O2/c1-13(2)12(15)16-11-8-6-7-10(9-11)14(3,4)5/h6-9H,1-5H3/q+1
2.1.3 InChI Key
ALWKGYPQUAPLQC-UHFFFAOYSA-N
2.1.4 Canonical SMILES
CN(C)C(=O)OC1=CC=CC(=C1)[N+](C)(C)C
2.2 Other Identifiers
2.2.1 UNII
3982TWQ96G
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Bromide, Neostigmine

2. Methylsulfate, Neostigmine

3. Neostigmine Bromide

4. Neostigmine Methylsulfate

5. Polstigmine

6. Proserine

7. Prostigmin

8. Prostigmine

9. Prozerin

10. Synstigmin

11. Syntostigmine

2.3.2 Depositor-Supplied Synonyms

1. Eustigmin

2. Eustigmine

3. Prostigmine

4. Vagostigmine

5. 59-99-4

6. Prostigmin

7. Juvastigmin

8. M-trimethylammoniumphenyldimethylcarbamate

9. Neostigmine [ban]

10. 3-trimethylammoniumphenyl N,n-dimethylcarbamate

11. 3-[(dimethylcarbamoyl)oxy]-n,n,n-trimethylanilinium

12. Neostigmine Ion

13. Neostigmine Cation

14. Neostigmine (ban)

15. Neostigmine (cation)

16. (m-hydroxyphenyl)trimethylammonium Dimethylcarbamate

17. Prostigmin (tn)

18. Neostigmin

19. [3-(dimethylcarbamoyloxy)phenyl]-trimethylazanium

20. Benzenaminium, 3-(((dimethylamino)carbonyl)oxy)-n,n,n-trimethyl-

21. Chebi:7514

22. Chembl278020

23. Neostigminum

24. 3982twq96g

25. [3-(dimethylcarbamoyloxy)phenyl]-trimethyl-azanium Bromide

26. 3-{[(dimethylamino)carbonyl]oxy}-n,n,n-trimethylanilinium

27. 3-((dimethylcarbamoyl)oxy)-n,n,n-trimethylbenzenaminium

28. Benzenaminium, 3-[[(dimethylamino)carbonyl]oxy]-n,n,n-trimethyl-

29. [3-(dimethylcarbamoyloxy)phenyl]-trimethyl-azanium; Sulfonatooxymethane

30. Ccris 3079

31. Hsdb 3921

32. Ncgc00163240-01

33. Cas-114-80-7

34. Brn 3615946

35. Unii-3982twq96g

36. (m-hydroxyphenyl)trimethylammonium Dimethylcarbamate (ester)

37. Ammonium, (m-hydroxyphenyl)trimethyl-, Dimethylcarbamate (ester)

38. Spectrum_001061

39. Neostigmine [mi]

40. Prestwick0_000468

41. Prestwick1_000468

42. Prestwick2_000468

43. Prestwick3_000468

44. Spectrum2_001278

45. Spectrum4_000072

46. Spectrum5_001234

47. Lopac-n-2001

48. Neostigmine [hsdb]

49. Bmse000762

50. Neostigmine [vandf]

51. Neostigmine [mart.]

52. Lopac0_000816

53. Schembl34419

54. Bspbio_000576

55. Kbiogr_000623

56. Kbioss_001541

57. [3-(dimethylcarbamoyloxy)phenyl]-trimethyl-azanium

58. Divk1c_000165

59. Divk1c_000198

60. Spbio_001276

61. Spbio_002515

62. Bpbio1_000634

63. Gtpl8993

64. Zinc1792

65. Dtxsid1023360

66. Alwkgypquaplqc-uhfffaoysa-

67. Kbio1_000165

68. Kbio1_000198

69. Kbio2_001541

70. Kbio2_004109

71. Kbio2_006677

72. Ninds_000165

73. Ninds_000198

74. Hms2089a22

75. Bdbm50022775

76. Stl058953

77. Akos005711366

78. Ccg-204900

79. Db01400

80. Idi1_000165

81. Idi1_000198

82. Mls-0002855

83. Ncgc00015730-01

84. Ncgc00015730-02

85. Ncgc00015730-03

86. Ncgc00015730-04

87. Ncgc00015730-05

88. Ncgc00015730-06

89. Ncgc00015730-07

90. Ncgc00015730-08

91. Ncgc00015730-09

92. Ncgc00015730-24

93. Ncgc00021658-03

94. Sbi-0050793.p004

95. Ab00053807

96. C07258

97. D08261

98. Ab00053807-25

99. Ab00053807-26

100. Ab00053807_27

101. Ab00053807_28

102. Ab00053807_29

103. Q410546

104. Brd-k18922609-004-04-1

105. Brd-k18922609-004-14-0

2.4 Create Date
2005-03-25
3 Chemical and Physical Properties
Molecular Weight 223.29 g/mol
Molecular Formula C12H19N2O2+
XLogP31.5
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count3
Exact Mass223.144652853 g/mol
Monoisotopic Mass223.144652853 g/mol
Topological Polar Surface Area29.5 Ų
Heavy Atom Count16
Formal Charge1
Complexity246
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Therapeutic Uses

Cholinesterase Inhibitors; Parasympathomimetics

National Library of Medicine's Medical Subject Headings online file (MeSH, 1999)


...ANTI-CHE /ANTICHOLINESTERASE/ AGENTS ARE OF GREAT VALUE IN MGMNT OF PRIMARY /GLAUCOMA/ AS WELL AS OF CERTAIN CATEGORIES OF SECONDARY TYPE (EG APHAKIC GLAUCOMA, FOLLOWING CATARACT EXTRACTION); THE CONGENITAL TYPE RARELY RESPONDS TO OTHER THAN SURGICAL TREATMENT. PRIMARY GLAUCOMA IS SUBDIVIDED INTO NARROW-ANGLE (ACUTE CONGESTIVE) AND WIDE-ANGLE (CHRONIC SIMPLE) TYPES... ANTI-CHE AGENTS PRODUCE A FALL IN INTRAOCULAR PRESSURE IN BOTH TYPES...BY LOWERING THE RESISTANCE TO OUTFLOW OF THE AQAEOUS HUMOR. ... /IN/ ACUTE CONGESTIVE GLAUCOMA...AN ANTI-CHE AGENT IS INSTILLED IN THE CONJUNCTIVAL SAC IN COMBINATION WITH PARASYMPATHOMIMETIC AGENT... CHRONIC SIMPLE...AND SECONDARY GLAUCOMA REQUIRE CAREFUL CONSIDERATION OF THE NEEDS OF THE INDIVIDUAL PT IN SELECTING DRUG OR COMBINATION OF DRUGS... CHOICES AVAIL INCL...ANTICHOLINESTERASE AGENTS...

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 113


...IS USED FOR THE RELIEF OF ABDOMINAL DISTENTION FROM A VARIETY OF MEDICAL AND SURGICAL CAUSES. ...IS TO BE VIEWED MAINLY AS ADJUVANT AGENT IN THE TREATMENT OF DISTENTION. ...WHEN NEOSTIGMINE IS EMPLOYED FOR THE TREATMENT OF ATONY OF THE DETRUSOR MUSCLE OF THE URINARY BLADDER, POSTOPERATIVE DYSURIA IS RELIEVED AND THE TIME INTERVAL BETWEEN OPERATION AND SPONTANEOUS URINATION IS SHORTENED.

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 113


...NEOSTIGMINE IS USED IN THE DIFFERENTIAL DIAGNOSIS OF MYASTHENIC CRISIS, IN WHICH CASE IT WILL IMPROVE MUSCLE FUNCTION, AND CHOLINERGIC CRISES, IN WHICH CASE IT WILL WORSEN FUNCTION, AND TO DIAGNOSE MYOTONIA CONGENITA.

Osol, A. (ed.). Remington's Pharmaceutical Sciences. 16th ed. Easton, Pennsylvania: Mack Publishing Co., 1980., p. 839


For more Therapeutic Uses (Complete) data for NEOSTIGMINE (9 total), please visit the HSDB record page.


4.2 Drug Warning

...NEOSTIGMINE, MUST BE USED CAUTIOUSLY IN PATIENTS WITH CARDIAC DYSRHYTHMIAS OR BRONCHIAL ASTHMA.

American Medical Association, AMA Department of Drugs. AMA Drug Evaluations. 5th ed. Chicago: American Medical Association, 1983., p. 426


THE DRUG SHOULD NOT BE USED WHEN THERE IS MECHANICAL OBSTRUCTION OF THE INTESTINE OR URINARY BLADDER, WHEN PERITONITIS IS PRESENT, OR WHEN THE VIABILITY OF THE BOWEL IS DOUBTFUL.

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 113


The type of reaction to neostigmine in patients with neuromuscular disease is unpredictable. Long-lasting muscle weakness was produced in a 57-yr-old female with dystrophia myotonica. A 50-yr-old male with a 30-yr history of progressive muscle dystrophy exhibited a tonic response to neostigmine during recovery from partial neuromuscular block.

Buzello W et al; Hazards of neostigmine in patients with neuromuscular disorders; Br J Anaesth 54 (5): 529-34 (1982)


Neostigmine in clinical doses can produce an acetylcholine-induced block which can be a potential hazard in anesthetic practice. Study reveals effects of neostigmine in 26 patients anesthetized with thiopentone and nitrous oxide.

Payne JP et al; Neuromuscular blockade by neostigmine in anaesthetized man; Br J Anaesth 52 (1): 69-76 (1980)


For more Drug Warnings (Complete) data for NEOSTIGMINE (6 total), please visit the HSDB record page.


4.3 Drug Indication

Neostigmine is used for the symptomatic treatment of myasthenia gravis by improving muscle tone.


5 Pharmacology and Biochemistry
5.1 Pharmacology

Neostigmine is a cholinesterase inhibitor used in the treatment of myasthenia gravis and to reverse the effects of muscle relaxants such as gallamine and tubocurarine. Neostigmine, unlike physostigmine, does not cross the blood-brain barrier. By inhibiting acetylcholinesterase, more acetylcholine is available in the synapse, therefore, more of it can bind to the fewer receptors present in myasthenia gravis and can better trigger muscular contraction.


5.2 MeSH Pharmacological Classification

Cholinesterase Inhibitors

Drugs that inhibit cholinesterases. The neurotransmitter ACETYLCHOLINE is rapidly hydrolyzed, and thereby inactivated, by cholinesterases. When cholinesterases are inhibited, the action of endogenously released acetylcholine at cholinergic synapses is potentiated. Cholinesterase inhibitors are widely used clinically for their potentiation of cholinergic inputs to the gastrointestinal tract and urinary bladder, the eye, and skeletal muscles; they are also used for their effects on the heart and the central nervous system. (See all compounds classified as Cholinesterase Inhibitors.)


Parasympathomimetics

Drugs that mimic the effects of parasympathetic nervous system activity. Included here are drugs that directly stimulate muscarinic receptors and drugs that potentiate cholinergic activity, usually by slowing the breakdown of acetylcholine (CHOLINESTERASE INHIBITORS). Drugs that stimulate both sympathetic and parasympathetic postganglionic neurons (GANGLIONIC STIMULANTS) are not included here. (See all compounds classified as Parasympathomimetics.)


5.3 FDA Pharmacological Classification
5.3.1 Active Moiety
NEOSTIGMINE
5.3.2 FDA UNII
3982TWQ96G
5.3.3 Pharmacological Classes
Cholinesterase Inhibitors [MoA]; Cholinesterase Inhibitor [EPC]
5.4 ATC Code

N07AA01

S76 | LUXPHARMA | Pharmaceuticals Marketed in Luxembourg | Pharmaceuticals marketed in Luxembourg, as published by d'Gesondheetskeess (CNS, la caisse nationale de sante, www.cns.lu), mapped by name to structures using CompTox by R. Singh et al. (in prep.). List downloaded from https://cns.public.lu/en/legislations/textes-coordonnes/liste-med-comm.html. Dataset DOI:10.5281/zenodo.4587355


N - Nervous system

N07 - Other nervous system drugs

N07A - Parasympathomimetics

N07AA - Anticholinesterases

N07AA01 - Neostigmine


S - Sensory organs

S01 - Ophthalmologicals

S01E - Antiglaucoma preparations and miotics

S01EB - Parasympathomimetics

S01EB06 - Neostigmine


5.5 Absorption, Distribution and Excretion

Absorption

Neostigmine bromide is poorly absorbed from the gastrointestinal tract following oral administration


NEOSTIGMINE...IS ABSORBED POORLY AFTER ORAL ADMINISTRATION, SUCH THAT MUCH LARGER DOSES ARE NEEDED THAN BY THE PARENTERAL ROUTE. ...THE EFFECTIVE PARENTERAL DOSE OF NEOSTIGMINE IN MAN IS 0.5 TO 2.0 MG, THE EQUIVALENT ORAL DOSE MAY BE 30 MG OR MORE. LARGE ORAL DOSES MAY PROVE TOXIC IF INTESTINAL ABSORPTION IS ENHANCED FOR ANY REASON.

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 108


...THE EXCRETION OF NEOSTIGMINE IS RETARDED IN PATIENTS WITH SEVERE KIDNEY DISEASE, MAKING THIS ANTICHOLINESTERASE DRUG AN ACCEPTABLE CHOICE IN PATIENTS WITH RENAL FAILURE.

American Medical Association, AMA Department of Drugs. AMA Drug Evaluations. 5th ed. Chicago: American Medical Association, 1983., p. 425


The pharmacokinetics of neostigmine in patients with normal renal function were determined and compared with those of patients undergoing renal transplantation or bilateral nephrectomy. Ten to 15 min prior to the end of operation and anesthesia, d-tubocurarine infusion was terminated and neostigmine, 0.07 mg/kg and atropine 0.03 mg/kg were given by infusion over a 2-min period. In anephric patients the elimination half-life was prolonged. Total serum clearance was decr from 16.7 ml/kg/min in patients with normal renal function to 7.8 ml/kg/min in anephric patients. Neostigmine pharmacokinetics following renal transplantation were not different from those in patients with normal renal function. Renal excretion accounts for 50% of neostigmine clearance.

Cronnelly R et al; Renal function and the pharmacokinetics of neostigmine in anesthetized man; Anesthesiology 51 (3): 222-6 (1979)


5.6 Metabolism/Metabolites

Neostigmine undergoes hydrolysis by cholinesterase and is also metabolized by microsomal enzymes in the liver.


NEOSTIGMINE IS DESTROYED BY PLASMA ESTERASES, AND THE QUATERNARY ALCOHOL AND PARENT COMPOUND ARE EXCRETED IN THE URINE.

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 108


NEOSTIGMINE YIELDS 3-HYDROXYPHENYL TRIMETHYLAMMONIUM IN THE RAT. ROBERTS, JB ET AL; BIOCHEM PHARMAC 17: 9 (1968). /FROM TABLE/

Goodwin, B.L. Handbook of Intermediary Metabolism of Aromatic Compounds. New York: Wiley, 1976., p. N-11


5.7 Biological Half-Life

The half-life ranged from 42 to 60 minutes with a mean half-life of 52 minutes.


The pharmacokinetics of neostigmine was evaluated in man after iv and oral admin. The mean plasma T/2 for neostigmine after iv admin was 0.89 hr. Following oral admin peak concn occurred 1-2 hr after intake, but biol availability was only 1-2% of the admin dose. In patients with myasthenia gravis, the decrement of the evoked electric muscle response of repetitive nerve stimulation correlated well with plasma concn of neostigmine.

Eckernas SA et al; Pharmacokinetics of neostigmine and pyridostigmine in man and its correlation to clinical effects in myasthenia gravis; Adv Behav Biol 25 (Cholinergic Mech): 879-90 (1981)


5.8 Mechanism of Action

Neostigmine is a parasympathomimetic, specifically, a reversible cholinesterase inhibitor. The drug inhibits acetylcholinesterase which is responsible for the degredation of acetylcholine. So, with acetylcholinesterase inhibited, more acetylcholine is present By interfering with the breakdown of acetylcholine, neostigmine indirectly stimulates both nicotinic and muscarinic receptors which are involved in muscle contraction.. It does not cross the blood-brain barrier.


...PHARMACOLOGICAL EFFECTS OF ANTICHOLINESTERASE AGENTS ARE DUE PRIMARILY TO PREVENTION OF HYDROLYSIS OF ACH /ACETYLCHOLINE/ BY ACHE /ACETYLCHOLINESTERASE/ AT SITES OF CHOLINERGIC TRANSMISSION. TRANSMITTER THUS ACCUMULATES, AND THE ACTION OF ACH /ACETYLCHOLINESTERASE/ THAT IS LIBERATED BY CHOLINERGIC IMPULSES OR THAT LEAKS FROM THE NERVE ENDING IS ENHANCED.

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 103


Neostigmine increased both miniature end-plate potential and end-plate potential amplitudes but did not affect quantal content in isolated frog sciatic nerve-Sartorius muscle prepn. This suggests that cholinesterase inhibition was the only effect.

Alderdice MT; Physostigmine, but not neostigmine, inhibits acetylcholine release; Brain Res 178 (2-3): 596-9 (1979)


Long term (24-96 hr) treatment of a mouse-derived myogenic cell line (G8) with neostigmine markedly reduced binding of alpha-bungarotoxin (alpha-BuTx) to these cells. Protein synthesis in these cultures was markedly reduced and cell morphology degenerated. Myotubes maintained slightly hyperpolarized resting membrane potentials, and were able to respond to iontophoretic acetylcholine (Ach) application with overshooting action potentials. Degenerative changes at the neuromuscular junction associated with chronic neostigmine treatment in vivo are probably due to a direct action of the anticholinesterase on the muscle, rather than to altered intracleft ACh levels or to presynaptic effects of the anticholinesterase.

Noble MD et al; Direct effects of neostigmine on aneural myotube cultures; Neurosci Lett 11 (2): 149-54 (1979)


The intraluminal probe mounted with 2 electrode-strain gauge pairs, 4 cm apart, was used to study the effect of a neutral interview, a stressful interview, a meal (478.7 cal) and neostigmine (0.5 mg, im) on the contractile electrical complex, continuous electrical response activity and their associated contractions in 17 normal subjects. Neostigmine resulted in an incr in contractile electric complex & continuous electric response activity indexes 5-10 and 25-30 min after the injection, respectively. Both the meal and neostigmine incr the percentage of propagated contractile electric complexes during all of the recording periods.

Sarna S et al; The effects of stress, meal, and neostigmine on rectosigmoidal motility in normals; Motil Dig Tract (Proc Int Symp Gastrointest Motil) 8th: 499-511 (1982)