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Record Information
Creation Date2014-09-11 05:22:00 UTC
Update Date2016-10-28 10:01:48 UTC
Accession NumberCHEM003868
Common NameAscorbyl palmitate
ClassSmall Molecule
DescriptionAntioxidant.Ascorbyl palmitate is an ester formed from ascorbic acid and palmitic acid creating a fat-soluble form of vitamin C. In addition to its use as a source of vitamin C, it is also used as an antioxidant food additive (E number E304). Oral supplements of ascorbyl palmitate are less effective, due to the substance breaking down again into its components before being digested. Ascorbyl palmitate is also marketed as "vitamin C ester. Ascorbyl palmitate has been shown to exhibit pro-oxidant function (1).
Contaminant Sources
  • Cosmetic Chemicals
  • EAFUS Chemicals
  • FooDB Chemicals
  • STOFF IDENT Compounds
  • T3DB toxins
  • ToxCast & Tox21 Chemicals
Contaminant Type
  • Ester
  • Ether
  • Food Additive
  • Food Toxin
  • Household Toxin
  • Metabolite
  • Organic Compound
  • Synthetic Compound
Chemical Structure
Ascorbyl palmitic acidGenerator
6-Hexadecanoyl-L-ascorbic acidHMDB
6-Palmitoyl-L-ascorbic acidHMDB
Ascorbyl palmitate, usanHMDB
Cetyl ascorbateHMDB
L-Ascorbic acid 6-palmitateHMDB
L-Ascorbyl 6-palmitateHMDB
L-Ascorbyl monopalmitateHMDB
L-Ascorbyl palmitateHMDB
Palmitoyl L-ascorbic acidHMDB
Vitamin c-palmitateHMDB
Ascorbic acid-6-O-palmitateMeSH, HMDB
6-O-Palmitoylascorbic acidMeSH, HMDB
Ascorbate 6-palmitateMeSH, HMDB
6-O-PalmitoylascorbateMeSH, HMDB
Asc-6-O-palmitateMeSH, HMDB
Chemical FormulaC22H38O7
Average Molecular Mass414.533 g/mol
Monoisotopic Mass414.262 g/mol
CAS Registry Number137-66-6
IUPAC Name2-(3,4-dihydroxy-5-oxo-2,5-dihydrofuran-2-yl)-2-hydroxyethyl hexadecanoate
Traditional Nameascorbyl palmitate
InChI IdentifierInChI=1S/C22H38O7/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-18(24)28-16-17(23)21-19(25)20(26)22(27)29-21/h17,21,23,25-26H,2-16H2,1H3
Chemical Taxonomy
Description belongs to the class of organic compounds known as fatty acid esters. These are carboxylic ester derivatives of a fatty acid.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassFatty acid esters
Direct ParentFatty acid esters
Alternative Parents
  • Fatty acid ester
  • 2-furanone
  • Dicarboxylic acid or derivatives
  • Dihydrofuran
  • Enoate ester
  • Vinylogous acid
  • Alpha,beta-unsaturated carboxylic ester
  • Carboxylic acid ester
  • Enediol
  • Lactone
  • Secondary alcohol
  • Oxacycle
  • Carboxylic acid derivative
  • Organoheterocyclic compound
  • Hydrocarbon derivative
  • Organic oxide
  • Alcohol
  • Organic oxygen compound
  • Organooxygen compound
  • Carbonyl group
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
Cellular Locations
  • Extracellular
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
AppearanceWhite powder.
Experimental Properties
Melting Point107 - 117 °C
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
Water Solubility0.0062 g/LALOGPS
pKa (Strongest Acidic)4.45ChemAxon
pKa (Strongest Basic)-3.6ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area113.29 ŲChemAxon
Rotatable Bond Count18ChemAxon
Refractivity110.62 m³·mol⁻¹ChemAxon
Polarizability48.59 ųChemAxon
Number of Rings1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MSsplash10-0a4i-7975000000-817fbadeaf39bf6599f8View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS)splash10-014r-8651109000-3593ce2b268de2a92097View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MSNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-05n1-1549300000-f68a0b35bade79d6d835View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0a4i-2951000000-a83ce14d5111b44f2834View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-000b-4960000000-c812ac147d5f97e36bccView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0bti-2592200000-3abd8fc115be9a5f3baeView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0a4r-0490000000-b1909900e83191685565View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0bti-7690000000-f73051fa0c3da30c41dbView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-03di-0211900000-3578bcc2055e27c49a27View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0a4l-9440100000-8c881797694162ee55f1View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-9270000000-4d2a7fac6e682060cba0View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014i-2931600000-cc6fb503f57d0f40bf6aView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-014j-9751100000-3ccf2b13170e49462a1eView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-052f-9100000000-57c541fcd7c336817313View in MoNA
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Not Available
DrugBank IDNot Available
FooDB IDFDB019542
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkAscorbyl palmitate
Chemspider ID10606454
ChEBI IDNot Available
PubChem Compound ID54676825
Kegg Compound IDNot Available
YMDB IDNot Available
ECMDB IDNot Available
Synthesis ReferenceNot Available
General References
1. Let MB, Jacobsen C, Meyer AS: Ascorbyl palmitate, gamma-tocopherol, and EDTA affect lipid oxidation in fish oil enriched salad dressing differently. J Agric Food Chem. 2007 Mar 21;55(6):2369-75. Epub 2007 Feb 24.
2. Simons K, Toomre D: Lipid rafts and signal transduction. Nat Rev Mol Cell Biol. 2000 Oct;1(1):31-9.
3. 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.
4. 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.
5. Lingwood D, Simons K: Lipid rafts as a membrane-organizing principle. Science. 2010 Jan 1;327(5961):46-50. doi: 10.1126/science.1174621.
6. Yannai, Shmuel. (2004) Dictionary of food compounds with CD-ROM: Additives, flavors, and ingredients. Boca Raton: Chapman & Hall/CRC.
7. The lipid handbook with CD-ROM