Record Information
Version1.0
Creation Date2009-07-23 18:26:14 UTC
Update Date2016-11-09 01:08:46 UTC
Accession NumberCHEM002430
Identification
Common NameHyoscyamine
ClassSmall Molecule
DescriptionHyoscyamine is a chemical compound, a tropane alkaloid it is the levo-isomer to atropine. It is a secondary metabolite of some plants, particularly henbane (Hyoscamus niger.) Hyoscyamine is used to provide symptomatic relief to various gastrointestinal disorders including spasms, peptic ulcers, irritable bowel syndrome, pancreatitis, colic and cystitis. It has also been used to relieve some heart problems, control some of the symptoms of Parkinson's disease, as well as for control of respiratory secretions in end of life care.
Contaminant Sources
  • HMDB Contaminants - Urine
  • STOFF IDENT Compounds
  • T3DB toxins
Contaminant Type
  • Amine
  • Anti-Arrhythmia Agent
  • Antispasmodic
  • Drug
  • Ester
  • Ether
  • Metabolite
  • Muscarinic Antagonist
  • Natural Compound
  • Organic Compound
  • Plant Toxin
Chemical Structure
Thumb
Synonyms
ValueSource
(-)-AtropineChEBI
(-)-HyoscyamineChEBI
(S)-(-)-HyoscyamineChEBI
[3(S)-endo]-alpha-(Hydroxymethyl)benzeneacetic acid 8-methyl-8-azabicyclo[3.2.1]oct-3-yl esterChEBI
DaturineChEBI
DuboisineChEBI
L-HyoscyamineChEBI
L-Tropine tropateChEBI
Tropine, (-)-tropateChEBI
[3(S)-endo]-a-(Hydroxymethyl)benzeneacetate 8-methyl-8-azabicyclo[3.2.1]oct-3-yl esterGenerator
[3(S)-endo]-a-(Hydroxymethyl)benzeneacetic acid 8-methyl-8-azabicyclo[3.2.1]oct-3-yl esterGenerator
[3(S)-endo]-alpha-(Hydroxymethyl)benzeneacetate 8-methyl-8-azabicyclo[3.2.1]oct-3-yl esterGenerator
[3(S)-endo]-Α-(hydroxymethyl)benzeneacetate 8-methyl-8-azabicyclo[3.2.1]oct-3-yl esterGenerator
[3(S)-endo]-Α-(hydroxymethyl)benzeneacetic acid 8-methyl-8-azabicyclo[3.2.1]oct-3-yl esterGenerator
L-Tropine tropic acidGenerator
Tropine, (-)-tropic acidGenerator
(Leo)-atropineHMDB
(Leo)-hyoscyamineHMDB
(S)-(Leo)-hyoscyamineHMDB
(S)AtropineHMDB
HyocyamineHMDB
L-AtropineHMDB
L-HyopscyamineHMDB
L-HyoscamineHMDB
HyoscyamineChEBI
Chemical FormulaC17H23NO3
Average Molecular Mass289.369 g/mol
Monoisotopic Mass289.168 g/mol
CAS Registry Number101-31-5
IUPAC Name(1R,3S,5S)-8-methyl-8-azabicyclo[3.2.1]octan-3-yl (2S)-3-hydroxy-2-phenylpropanoate
Traditional NameL-hyoscyamine
SMILESCN1[C@H]2CC[C@@H]1C[C@@H](C2)OC(=O)[C@H](CO)C1=CC=CC=C1
InChI IdentifierInChI=1S/C17H23NO3/c1-18-13-7-8-14(18)10-15(9-13)21-17(20)16(11-19)12-5-3-2-4-6-12/h2-6,13-16,19H,7-11H2,1H3/t13-,14+,15+,16-/m1/s1
InChI KeyRKUNBYITZUJHSG-FXUDXRNXSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as tropane alkaloids. These are organic compounds containing the nitrogenous bicyclic alkaloid parent N-Methyl-8-azabicyclo[3.2.1]octane.
KingdomOrganic compounds
Super ClassAlkaloids and derivatives
ClassTropane alkaloids
Sub ClassNot Available
Direct ParentTropane alkaloids
Alternative Parents
Substituents
  • Tropane alkaloid
  • Beta-hydroxy acid
  • Monocyclic benzene moiety
  • Hydroxy acid
  • Piperidine
  • Benzenoid
  • N-alkylpyrrolidine
  • Pyrrolidine
  • Amino acid or derivatives
  • Carboxylic acid ester
  • Tertiary aliphatic amine
  • Tertiary amine
  • Carboxylic acid derivative
  • Monocarboxylic acid or derivatives
  • Azacycle
  • Organoheterocyclic compound
  • Organonitrogen compound
  • Amine
  • Hydrocarbon derivative
  • Organic oxide
  • Alcohol
  • Carbonyl group
  • Organopnictogen compound
  • Organic oxygen compound
  • Organooxygen compound
  • Organic nitrogen compound
  • Primary alcohol
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
Pathways
NameSMPDB LinkKEGG Link
Salivary secretionNot Availablemap04970
Gastric acid secretionNot Availablemap04971
Insulin secretionNot Availablemap04911
Cholinergic synapseNot Availablemap04725
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting Point108.5°C
Boiling PointNot Available
Solubility3560 mg/L (at 20°C)
Predicted Properties
PropertyValueSource
Water Solubility2.52 g/LALOGPS
logP2.19ALOGPS
logP1.57ChemAxon
logS-2.1ALOGPS
pKa (Strongest Acidic)15.15ChemAxon
pKa (Strongest Basic)9.39ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area49.77 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity80.82 m³·mol⁻¹ChemAxon
Polarizability31.74 ųChemAxon
Number of Rings3ChemAxon
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, Positivesplash10-00di-5900000000-f705f96b0219dcd47d66Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-0006-4900000000-d0c3228da9df55297f7bSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-qTof , Positivesplash10-006x-6951100000-43127e046c478d2643e1Spectrum
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-006x-6951100000-43127e046c478d2643e1Spectrum
LC-MS/MSLC-MS/MS Spectrum - 35V, Positivesplash10-006x-6960000000-96b74c70ce0011e5968dSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-00dl-0790000000-b3809a4d9f3d53472626Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00di-1920000000-5cf6a284aa0360bfa6f5Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0g02-2900000000-03a359b67b71a8d41b5aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-0490000000-42268e6db552a2d85a66Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-05g3-1960000000-db1243e11ae5ea609f09Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-00bc-5900000000-3453e9ae42b1ccba243cSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0006-0090000000-38746560650547c38a28Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-006x-1590000000-abf830c79515feb657d2Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-006y-9500000000-28e9eb9a8330fa4c60d9Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-0490000000-4b2dacd04cd09b1229daSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0g4r-1910000000-6bc43ea9e9a781364124Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-014i-1910000000-9a0fd9e7ddf07814092bSpectrum
MSMass Spectrum (Electron Ionization)splash10-00di-9810000000-bdd60b3a23f97899d426Spectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
Toxicity Profile
Route of ExposureOral (ingestion) (3) ; dermal (3). Absorbed totally and completely by sublingual administration as well as oral administration.
Mechanism of ToxicityHyoscyamine is an anticholinergic, specifically an antimuscarinic, and works by blocking the action of acetylcholine at parasympathetic sites in smooth muscle, secretory glands, and the central nervous system. (1) Hyoscyamine competes favorably with acetylcholine for binding at muscarinic receptors in the salivary, bronchial, and sweat glands as well as in the eye, heart, and gastrointestinal tract. The actions of hyoscyamine result in a reduction in salivary, bronchial, gastric and sweat gland secretions, mydriasis, cycloplegia, change in heart rate, contraction of the bladder detrusor muscle and of the gastrointestinal smooth muscle, and decreased gastrointestinal motility.
MetabolismHepatic Half Life: 2-3.5 hours
Toxicity Values LD50=mg/kg (orally in rat)
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesHyoscyamine is a plant toxin found in certain plants of the Solanaceae family, including henbane (Hyoscyamus niger), mandrake (Mandragora officinarum), jimsonweed (Datura stramonium), and deadly nightshade (Atropa belladonna). It is used as a drug to provide symptomatic relief to various gastrointestinal disorders including spasms, peptic ulcers, irritable bowel syndrome, pancreatitis, colic and cystitis. It has also been used to relieve some heart problems, control some of the symptoms of Parkinson's disease, as well as for control of respiratory secretions in palliative care.(1)
Minimum Risk LevelNot Available
Health EffectsHyoscyamine affects the central nervous system. (1)
SymptomsSide effects of hyoscyamine include dry mouth and throat, eye pain, blurred vision, restlessness, dizziness, arrythmia, flushing, and faintness. An overdose will cause headache, nausea, vomiting, and central nervous system symptoms including disorientation, hallucinations, euphoria, sexual arousal, short-term memory loss, and possible coma in extreme cases. (1)
TreatmentNot Available
Concentrations
Not Available
DrugBank IDDB00424
HMDB IDHMDB0014568
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDC00002293
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkHyoscyamine
Chemspider ID10246417
ChEBI ID17486
PubChem Compound IDNot Available
Kegg Compound IDC02046
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis Reference

Jeffrey Kiel, H. Thomas, Emily Ware, Brady Ware, “Phenolic acid complexes of hyoscyamine and process for preparing the same.” U.S. Patent US20060128637, issued June 15, 2006.

MSDSLink
General ReferencesNot Available