Record Information
Version1.0
Creation Date2010-04-21 19:31:18 UTC
Update Date2026-04-03 12:31:12 UTC
Accession NumberCHEM002655
Identification
Common NameMethylergonovine
ClassSmall Molecule
DescriptionMethylergonovine is only found in individuals that have used or taken this drug. It is a homolog of ergonovine containing one more CH2 group (Merck Index, 11th ed). Methylergonovine acts directly on the smooth muscle of the uterus and increases the tone, rate, and amplitude of rhythmic contractions through binding and the resultant antagonism of the dopamine D1 receptor. Thus, it induces a rapid and sustained tetanic uterotonic effect which shortens the third stage of labor and reduces blood loss.
Contaminant Sources
  • HMDB Contaminants - Urine
  • STOFF IDENT Compounds
  • T3DB toxins
  • ToxCast & Tox21 Chemicals
Contaminant Type
  • Amide
  • Amine
  • Drug
  • Metabolite
  • Organic Compound
  • Oxytocic
  • Serotonin Antagonist
  • Synthetic Compound
  • Vasoconstrictor Agent
Chemical Structure
Thumb
Synonyms
ValueSource
ErgotylKegg
MethylergobasinHMDB
MethylergobasineHMDB
MethylergobrevinHMDB
MethylergometrinHMDB
MethylergometrineHMDB
MethylergonovinHMDB
Methylergonovine maleateHMDB
Novartis brand OF methylergonovine maleateHMDB
MétherginHMDB
MetherginHMDB
MethergineHMDB
Methylergometrine maleateHMDB
MethylergonovineMeSH
Chemical FormulaC20H25N3O2
Average Molecular Mass339.431 g/mol
Monoisotopic Mass339.195 g/mol
CAS Registry Number113-42-8
IUPAC Name(4R,7R)-N-[(2S)-1-hydroxybutan-2-yl]-6-methyl-6,11-diazatetracyclo[7.6.1.0²,⁷.0¹²,¹⁶]hexadeca-1(16),2,9,12,14-pentaene-4-carboxamide
Traditional Namemethylergonovine
SMILES[H][C@@]12CC3=CNC4=CC=CC(=C34)C1=C[C@H](CN2C)C(=O)N[C@@H](CC)CO
InChI IdentifierInChI=1S/C20H25N3O2/c1-3-14(11-24)22-20(25)13-7-16-15-5-4-6-17-19(15)12(9-21-17)8-18(16)23(2)10-13/h4-7,9,13-14,18,21,24H,3,8,10-11H2,1-2H3,(H,22,25)/t13-,14+,18-/m1/s1
InChI KeyUNBRKDKAWYKMIV-QWQRMKEZSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as lysergamides. These are amides of Lysergic acids.
KingdomOrganic compounds
Super ClassAlkaloids and derivatives
ClassErgoline and derivatives
Sub ClassLysergic acids and derivatives
Direct ParentLysergamides
Alternative Parents
Substituents
  • Lysergic acid amide
  • Indoloquinoline
  • Benzoquinoline
  • Pyrroloquinoline
  • Quinoline-3-carboxamide
  • Quinoline
  • 3-alkylindole
  • Indole
  • Indole or derivatives
  • Isoindole or derivatives
  • Aralkylamine
  • Benzenoid
  • Heteroaromatic compound
  • Pyrrole
  • Tertiary aliphatic amine
  • Tertiary amine
  • Secondary carboxylic acid amide
  • Carboxamide group
  • Amino acid or derivatives
  • Azacycle
  • Organoheterocyclic compound
  • Carboxylic acid derivative
  • Hydrocarbon derivative
  • Organopnictogen compound
  • Organic oxygen compound
  • Amine
  • Alcohol
  • Organonitrogen compound
  • Organooxygen compound
  • Carbonyl group
  • Organic nitrogen compound
  • Primary alcohol
  • Organic oxide
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting Point172°C
Boiling PointNot Available
Solubility25 mg/mL
Predicted Properties
PropertyValueSource
Water Solubility0.2 g/LALOGPS
logP1.74ALOGPS
logP1.59ChemAxon
logS-3.2ALOGPS
pKa (Strongest Acidic)15ChemAxon
pKa (Strongest Basic)7.93ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area68.36 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity99.58 m³·mol⁻¹ChemAxon
Polarizability38.73 ųChemAxon
Number of Rings4ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0002-3914000000-d6349f005e3253821421Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-01ba-4095000000-07cac91c483c45e0b4fcSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-006x-1019000000-5743eb114639a8b4cd68Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0uk9-4093000000-2f215482a3bef9973b4fSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00di-3940000000-bf7ef321bb426974d49bSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-0019000000-25ad156f1bdbadfdb37fSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-05g0-2169000000-04eae81fd7d7bb4dbf72Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-05fu-8290000000-0f17abb269c859d8cdacSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0006-0019000000-011f8e74477076271412Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-006x-1069000000-38039c479f71c2219d4dSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00di-0190000000-68a0ea065cbe0f2aeef0Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-0009000000-7d83f1b1716bd17dabc8Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-000i-0009000000-4856ff7ce1f702c342f8Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0avl-5290000000-bb401d09f7282c1260d2Spectrum
Toxicity Profile
Route of ExposureIngestion (6). Absorption is rapid after oral (60% bioavailability) and intramuscular (78% bioavailability) administration.
Mechanism of ToxicityErgoline alkaloids have been shown to have the significant affinity towards the 5-HT1 and 5-HT2 serotonin receptors, D1 and D2 dopamine receptors, and alpha-adrenergic receptors. This can result in a number of different effects, including vasoconstriction, convulsions, and hallucinations. (2, 3, 4)
MetabolismHepatic, with extensive first-pass metabolism. Route of Elimination: Ergot alkaloids are mostly eliminated by hepatic metabolism and excretion, and the decrease in bioavailability following oral administration is probably a result of first-pass metabolism in the liver. Half Life: 3.39 hours
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesMethylergometrine is a synthetic analogue of ergonovine, an alkaloid of the ergoline family that occurs in various species of vines of the Convolvulaceae (morning glory) family and in some species of lower fungi like other ergoline alkaloids. Methylergometrine is a blood vessel constrictor and smooth muscle agonist most commonly used to prevent or control excessive bleeding following childbirth and spontaneous or elective abortion. It also causes uterine contractions to aid in expulsion of retained products of conception after a missed abortion (miscarriage in which all or part of the fetus remains in the uterus) and to help deliver the placenta after childbirth. The drug is currently prepared via reaction of (+)-lysergic acid with L-(+)-aminobutanol, using different coupling reagents, and is available under the name Methergine as tablets or injection (IM or IV) or in liquid form to be taken orally. (5, 8)
Minimum Risk LevelNot Available
Health EffectsIngestion of ergoline alkaloids is known to cause the disease ergotism. Ergotism occurs in two forms, gangrenous and convulsive, likely depending on the different kinds and amounts of ergoline alkaloids present. (1)
SymptomsConvulsive ergotism can cause painful seizures and spasms, diarrhea, paresthesias, itching, headaches, nausea and vomiting. Usually the gastrointestinal effects precede the central nervous system effects. As well as seizures there can be hallucinations and mental effects including mania or psychosis. Gangrenous ergotism causes dry gangrene as a result of vasoconstriction induced in the more poorly vascularized distal structures, such as the fingers and toes. Symptoms include desquamation, weak periphery pulse, loss of peripheral sensation, edema and ultimately the death and loss of affected tissues. (6)
TreatmentTreatment for ergotism consists of vasodilators, anticoagulants and low molecular weight dextrans. If necessary, a sympathetic nerve blockade may be carried out, such as brachial plexus blockade. Temporary sedation (e.g. haloperidol) will be necessary in hallucination and diazepam is used for convulsions. There is no specific antidote. (7)
Concentrations
Not Available
DrugBank IDDB00353
HMDB IDHMDB0014497
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkMethylergometrine
Chemspider ID7933
ChEBI ID775307
PubChem Compound ID8226
Kegg Compound IDNot Available
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSLink
General ReferencesNot Available