Record Information
Version1.0
Creation Date2016-05-25 18:19:50 UTC
Update Date2026-04-15 16:45:18 UTC
Accession NumberCHEM022094
Identification
Common NameMegestrol
ClassSmall Molecule
DescriptionA 3-oxo Delta(4)-steroid that is pregna-4,6-diene-3,20-dione substituted by a hydroxy group at position 17.
Contaminant Sources
  • HMDB Contaminants - Urine
  • STOFF IDENT Compounds
Contaminant TypeNot Available
Chemical Structure
Thumb
Synonyms
ValueSource
17-Hydroxy-6-methylpregna-4,6-diene-3,20-dioneChEBI
MagestinChEBI
MegeronChEBI
MegestrolumChEBI
NiagestinChEBI
OvabanChEBI
OvaridChEBI
VolidanChEBI
Megestrol acetateHMDB
MegestroloHMDB
Megestryl acetateHMDB
MGAHMDB
17-Hydroxy-6-dehydroprogesterone, (9beta,10alpha)-isomerHMDB
17-Hydroxy-6-dehydroprogesteroneHMDB
17-HDHPGHMDB
Chemical FormulaC21H28O3
Average Molecular Mass328.445 g/mol
Monoisotopic Mass328.204 g/mol
CAS Registry Number3562-63-8
IUPAC Name(1S,2R,10R,11S,14R,15S)-14-acetyl-14-hydroxy-2,15-dimethyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadeca-6,8-dien-5-one
Traditional Namemegestrol
SMILES[H][C@@]12CC[C@](O)(C(C)=O)[C@@]1(C)CC[C@@]1([H])[C@@]2([H])C=CC2=CC(=O)CC[C@]12C
InChI IdentifierInChI=1S/C21H28O3/c1-13(22)21(24)11-8-18-16-5-4-14-12-15(23)6-9-19(14,2)17(16)7-10-20(18,21)3/h4-5,12,16-18,24H,6-11H2,1-3H3/t16-,17+,18+,19+,20+,21+/m1/s1
InChI KeyJBVNBBXAMBZTMQ-CEGNMAFCSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as gluco/mineralocorticoids, progestogins and derivatives. These are steroids with a structure based on a hydroxylated prostane moiety.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassPregnane steroids
Direct ParentGluco/mineralocorticoids, progestogins and derivatives
Alternative Parents
Substituents
  • Progestogin-skeleton
  • 20-oxosteroid
  • 3-oxosteroid
  • 17-hydroxysteroid
  • Oxosteroid
  • Hydroxysteroid
  • Cyclohexenone
  • Alpha-hydroxy ketone
  • Cyclic alcohol
  • Tertiary alcohol
  • Cyclic ketone
  • Ketone
  • Organic oxygen compound
  • Organooxygen compound
  • Hydrocarbon derivative
  • Carbonyl group
  • Organic oxide
  • Alcohol
  • Aliphatic homopolycyclic compound
Molecular FrameworkAliphatic homopolycyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.022 g/LALOGPS
logP2.91ALOGPS
logP3.04ChemAxon
logS-4.2ALOGPS
pKa (Strongest Acidic)12.7ChemAxon
pKa (Strongest Basic)-3.8ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area54.37 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity95.22 m³·mol⁻¹ChemAxon
Polarizability37.31 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, Positivesplash10-052o-3692000000-273ed2697dc747b07877Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-009l-5569000000-92c478c5541ca3cdb49dSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-004i-0129000000-91e7aae3dcf4681023d5Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-01ti-0394000000-3a1e1148d707633d1893Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-014s-2940000000-35c10eae302be7284ec8Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-004i-0019000000-c7b233401fe84cccc004Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-004r-0097000000-6b5af6858dc62dd2e876Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0n2i-0091000000-8a487c18d41b7b41e85fSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-004i-0019000000-f0d17e74dd87aa6f0a01Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-004i-0049000000-5c51a1c8838c7592f1ffSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-015i-0091000000-caf99973cbd8b1d9964cSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-004i-0019000000-927a758547b25409a106Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0cfu-0942000000-783008fe6e6e6a07d8f3Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0596-5960000000-a807ceaf72ed64e8caf1Spectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDNot Available
HMDB IDHMDB0014495
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkMegestrol
Chemspider ID2338340
ChEBI ID6722
PubChem Compound ID3080587
Kegg Compound IDC07120
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General References
1. https://www.ncbi.nlm.nih.gov/pubmed/?term=12161003
2. Schindler AE, Campagnoli C, Druckmann R, Huber J, Pasqualini JR, Schweppe KW, Thijssen JH: Classification and pharmacology of progestins. Maturitas. 2008 Sep-Oct;61(1-2):171-80.
3. Orme LM, Bond JD, Humphrey MS, Zacharin MR, Downie PA, Jamsen KM, Mitchell SL, Robinson JM, Grapsas NA, Ashley DM: Megestrol acetate in pediatric oncology patients may lead to severe, symptomatic adrenal suppression. Cancer. 2003 Jul 15;98(2):397-405.
4. Pascual Lopez A, Roque i Figuls M, Urrutia Cuchi G, Berenstein EG, Almenar Pasies B, Balcells Alegre M, Herdman M: Systematic review of megestrol acetate in the treatment of anorexia-cachexia syndrome. J Pain Symptom Manage. 2004 Apr;27(4):360-9.
5. Berenstein EG, Ortiz Z: Megestrol acetate for the treatment of anorexia-cachexia syndrome. Cochrane Database Syst Rev. 2005 Apr 18;(2):CD004310.
6. Rao GG, Miller DS: Hormonal therapy in epithelial ovarian cancer. Expert Rev Anticancer Ther. 2006 Jan;6(1):43-7.
7. Simons K, Toomre D: Lipid rafts and signal transduction. Nat Rev Mol Cell Biol. 2000 Oct;1(1):31-9.
8. Watson AD: Thematic review series: systems biology approaches to metabolic and cardiovascular disorders. Lipidomics: a global approach to lipid analysis in biological systems. J Lipid Res. 2006 Oct;47(10):2101-11. Epub 2006 Aug 10.
9. Sethi JK, Vidal-Puig AJ: Thematic review series: adipocyte biology. Adipose tissue function and plasticity orchestrate nutritional adaptation. J Lipid Res. 2007 Jun;48(6):1253-62. Epub 2007 Mar 20.
10. Lingwood D, Simons K: Lipid rafts as a membrane-organizing principle. Science. 2010 Jan 1;327(5961):46-50. doi: 10.1126/science.1174621.
11. The lipid handbook with CD-ROM