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Record Information
StatusDetected and Quantified
Creation Date2012-09-11 17:50:34 UTC
Update Date2020-11-09 23:20:13 UTC
Secondary Accession Numbers
  • HMDB32574
Metabolite Identification
Common NamePropylparaben
DescriptionPropylparaben, also known as propyl chemosept or propyl parasept, belongs to the class of organic compounds known as p-hydroxybenzoic acid alkyl esters. These are aromatic compounds containing a benzoic acid, which is esterified with an alkyl group and para-substituted with a hydroxyl group. Propylparaben is an extremely weak basic (essentially neutral) compound (based on its pKa). Propylparaben is a sweet, burnt, and hawthorn tasting compound. Outside of the human body,. Propylparaben is a potentially toxic compound. Propylparaben is an antimicrobial agent, preservative, flavouring agent.
4-Hydroxybenzoic acid propyl esterChEBI
4-Hydroxybenzoic acid, propyl esterChEBI
N-Propyl 4-hydroxybenzoateChEBI
N-Propyl p-hydroxybenzoateChEBI
N-Propyl parabenChEBI
p-Hydroxybenzoic acid propyl esterChEBI
p-Hydroxybenzoic propyl esterChEBI
p-Hydroxypropyl benzoateChEBI
Propyl p-hydroxybenzoateChEBI
Propyl parabenChEBI
Propyl parahydroxybenzoateChEBI
4-Hydroxybenzoate propyl esterGenerator
4-Hydroxybenzoate, propyl esterGenerator
N-Propyl 4-hydroxybenzoic acidGenerator
N-Propyl p-hydroxybenzoic acidGenerator
p-Hydroxybenzoate propyl esterGenerator
p-Hydroxypropyl benzoic acidGenerator
Propyl p-hydroxybenzoic acidGenerator
Propyl parahydroxybenzoic acidGenerator
4-Hydroxybenzoic acid propylesterHMDB
Aseptoform pHMDB
Benzoic acid, 4-hydroxy-, propyl esterHMDB
Benzoic acid, p-hydroxy-, propyl esterHMDB
Betacide pHMDB
Betacine pHMDB
Chemacide PKHMDB
Chemocide PKHMDB
Chemoside PKHMDB
Lexgard pHMDB
Nipagin pHMDB
p-Hydroxybenzoic acid N-propyl esterHMDB
p-Hydroxybenzoic acid, propyl esterHMDB
Propyl 4-hydroxybenzoateHMDB
Propyl aseptoformHMDB
Propyl butexHMDB
Propyl chemoseptHMDB
Propyl chemseptHMDB
Propyl paraseptHMDB
Propylparaben, usanHMDB
Protaben pHMDB
Solbrol pHMDB
Tegosept pHMDB
3(Or 4)-hydroxybenzoic acid propyl esterHMDB
Bayer D 206HMDB
Propylparaben, monosodium saltHMDB
Chemical FormulaC10H12O3
Average Molecular Weight180.2005
Monoisotopic Molecular Weight180.07864425
IUPAC Namepropyl 4-hydroxybenzoate
Traditional Namepropylparaben
CAS Registry Number94-13-3
InChI Identifier
Chemical Taxonomy
Description belongs to the class of organic compounds known as p-hydroxybenzoic acid alkyl esters. These are aromatic compounds containing a benzoic acid, which is esterified with an alkyl group and para-substituted with a hydroxyl group.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassBenzoic acids and derivatives
Direct Parentp-Hydroxybenzoic acid alkyl esters
Alternative Parents
  • P-hydroxybenzoic acid alkyl ester
  • Benzoyl
  • 1-hydroxy-2-unsubstituted benzenoid
  • Phenol
  • Carboxylic acid ester
  • Monocarboxylic acid or derivatives
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors


Biological location:


Industrial application:

Physical Properties
Experimental Properties
Melting Point96 - 97 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility0.5 mg/mL at 25 °CNot Available
LogP3.04Not Available
Predicted Properties
Water Solubility0.96 g/LALOGPS
pKa (Strongest Acidic)8.5ChemAxon
pKa (Strongest Basic)-6.1ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area46.53 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity49.34 m³·mol⁻¹ChemAxon
Polarizability19.35 ųChemAxon
Number of Rings1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-00dr-2900000000-5ad831b2650fc930116cSpectrum
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-00dr-2900000000-5ad831b2650fc930116cSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-00di-4900000000-ea56320d2db779d7b4baSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-0006-3910000000-6627fe49566ac19f2646Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QFT , negativesplash10-004i-0900000000-a528bf6bd610eaa4d56dSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-001i-2900000000-4ca188f06fa4b53e3248Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-006x-9600000000-5d01c0904ab22d191c71Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0006-9300000000-13a8f8a6fa20b2a61dd8Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-004i-1900000000-c039bed96e2f85d3b72cSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-000l-3900000000-476bdcb3573067826dc1Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9400000000-7a7313c9b1e989f7c4dcSpectrum
MSMass Spectrum (Electron Ionization)splash10-00dr-4900000000-1b9740067a9969c2e70dSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
Biological Properties
Cellular Locations
  • Membrane
Biospecimen Locations
  • Blood
  • Sweat
  • Urine
Tissue LocationsNot Available
Normal Concentrations
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
UrineDetected and Quantified0.00504 (0.00423-0.00600) umol/mmol creatinineAdult (>18 years old)Not SpecifiedNormal
    • National Health a...
UrineDetected and Quantified0.00268 (0.00210-0.00343) umol/mmol creatinineChildren (1-13 years old)Not SpecifiedNormal
    • National Health a...
Abnormal Concentrations
SweatDetected but not QuantifiedNot QuantifiedInfant (0-1 year old)Not Specifiedscreen-positive CF details
Associated Disorders and Diseases
Disease References
Cystic fibrosis
  1. Adriana Nori de Macedo. Robust capillary electrophoresis methods for biomarker discovery and routine measurements in clinical and epidemiological applications. March 2017 [Link]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB010511
KNApSAcK IDNot Available
Chemspider ID6907
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkPropylparaben
METLIN IDNot Available
PubChem Compound7175
PDB IDNot Available
ChEBI ID32063
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB ID
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Jadach M, Blazewicz A, Fijalek Z: Determination of local anesthetics in illegal products using HPLC method with amperometric detection. Acta Pol Pharm. 2012 May-Jun;69(3):397-403. [PubMed:22594253 ]
  2. Chen ZF, Ying GG, Lai HJ, Chen F, Su HC, Liu YS, Peng FQ, Zhao JL: Determination of biocides in different environmental matrices by use of ultra-high-performance liquid chromatography-tandem mass spectrometry. Anal Bioanal Chem. 2012 Dec;404(10):3175-88. doi: 10.1007/s00216-012-6444-2. Epub 2012 Oct 10. [PubMed:23052884 ]
  3. Albero B, Perez RA, Sanchez-Brunete C, Tadeo JL: Occurrence and analysis of parabens in municipal sewage sludge from wastewater treatment plants in Madrid (Spain). J Hazard Mater. 2012 Nov 15;239-240:48-55. doi: 10.1016/j.jhazmat.2012.05.017. Epub 2012 May 11. [PubMed:22640822 ]
  4. Harvey PW, Everett DJ: Parabens detection in different zones of the human breast: consideration of source and implications of findings. J Appl Toxicol. 2012 May;32(5):305-9. doi: 10.1002/jat.2743. Epub 2012 Mar 7. [PubMed:22408000 ]
  5. Perez-Lozano P, Garcia-Montoya E, Orriols A, Minarro M, Tico JR, Sune-Negre JM: A new validated method for the simultaneous determination of benzocaine, propylparaben and benzyl alcohol in a bioadhesive gel by HPLC. J Pharm Biomed Anal. 2005 Oct 4;39(5):920-7. Epub 2005 Jul 20. [PubMed:16039086 ]
  6. Yu K, Li B, Zhang T: Direct rapid analysis of multiple PPCPs in municipal wastewater using ultrahigh performance liquid chromatography-tandem mass spectrometry without SPE pre-concentration. Anal Chim Acta. 2012 Aug 13;738:59-68. doi: 10.1016/j.aca.2012.05.057. Epub 2012 Jun 9. [PubMed:22790701 ]
  7. Hu P, Chen X, Whitener RJ, Boder ET, Jones JO, Porollo A, Chen J, Zhao L: Effects of parabens on adipocyte differentiation. Toxicol Sci. 2013 Jan;131(1):56-70. doi: 10.1093/toxsci/kfs262. Epub 2012 Sep 5. [PubMed:22956630 ]
  8. Gurtler JB, Jin TZ: Propylparaben sensitizes heat-resistant Salmonella Enteritidis and Salmonella Oranienburg to thermal inactivation in liquid egg albumen. J Food Prot. 2012 Mar;75(3):443-8. doi: 10.4315/0362-028X.JFP-11-158. [PubMed:22410216 ]
  9. Dvores MP, Marom G, Magdassi S: Formation of organic nanoparticles by electrospinning of volatile microemulsions. Langmuir. 2012 May 1;28(17):6978-84. doi: 10.1021/la204741f. Epub 2012 Apr 19. [PubMed:22452574 ]
  10. Talevi A, Bellera CL, Castro EA, Bruno-Blanch LE: A successful virtual screening application: prediction of anticonvulsant activity in MES test of widely used pharmaceutical and food preservatives methylparaben and propylparaben. J Comput Aided Mol Des. 2007 Sep;21(9):527-38. Epub 2007 Oct 25. [PubMed:17960329 ]
  11. Lee T, Lok C, Vazquez M, Moist L, Maya I, Mokrzycki M: Minimizing hemodialysis catheter dysfunction: an ounce of prevention. Int J Nephrol. 2012;2012:170857. doi: 10.1155/2012/170857. Epub 2012 Feb 19. [PubMed:22518310 ]
  12. (). Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.. .