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Record Information
StatusExpected but not Quantified
Creation Date2006-05-22 15:12:45 UTC
Update Date2020-05-13 20:49:49 UTC
Secondary Accession Numbers
  • HMDB03255
Metabolite Identification
Common NameAmylopectin
DescriptionAmylopectin is a highly branched polymer of glucose found in plants. It is one of the two components of starch, the other being amylose. It is insoluble in water. Glucose units are linked in a linear way with α(1→4) bonds. Branching takes place with α(1→6) bonds occurring every 24 to 30 glucose units. Its counterpart in animals is glycogen which has the same composition and structure, but with more extensive branching that occurs every 8 to 12 glucose units. Starch is made of about 80% amylopectin. Amylopectin is highly branched, being formed of 2 000 to 200 000 glucose units. Its inner chains are formed of 20-24 glucose subunits. The glucose residues are linked through alpha-1,4 glycosidic linkages (Wikipedia ).
Chemical FormulaC30H52O26
Average Molecular Weight828.7183
Monoisotopic Molecular Weight828.274681836
IUPAC Name(2R,3R,4S,5S,6R)-2-{[(2R,3S,4R,5R,6S)-6-{[(2R,3S,4R,5R,6R)-4,5-dihydroxy-6-{[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy}-3-{[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}oxan-2-yl]methoxy}-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy}-6-(hydroxymethyl)oxane-3,4,5-triol
Traditional Nameamylopectin
CAS Registry Number9037-22-3
InChI Identifier
Chemical Taxonomy
Description belongs to the class of organic compounds known as oligosaccharides. These are carbohydrates made up of 3 to 10 monosaccharide units linked to each other through glycosidic bonds.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbohydrates and carbohydrate conjugates
Direct ParentOligosaccharides
Alternative Parents
  • Oligosaccharide
  • O-glycosyl compound
  • Glycosyl compound
  • Oxane
  • Secondary alcohol
  • Hemiacetal
  • Oxacycle
  • Organoheterocyclic compound
  • Polyol
  • Acetal
  • Hydrocarbon derivative
  • Primary alcohol
  • Alcohol
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External Descriptors


Biological location:

Physical Properties
Experimental Properties
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
Water Solubility248 g/LALOGPS
pKa (Strongest Acidic)11.17ChemAxon
pKa (Strongest Basic)-3.7ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count26ChemAxon
Hydrogen Donor Count17ChemAxon
Polar Surface Area426.98 ŲChemAxon
Rotatable Bond Count13ChemAxon
Refractivity165.58 m³·mol⁻¹ChemAxon
Polarizability76.06 ųChemAxon
Number of Rings5ChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash KeyView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-01ot-0200109050-1fffec2b84c1b7a333deSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0002-0401159010-e3eceadd6ec627aae902Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0gwk-0901465210-d66fc5ebec96fb33bfd8Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0ar1-0302036490-553d6c95b62f7f6fdbeeSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0a6s-3903228260-91327c895506a02a1c06Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0fba-2911083100-a241a0c514458b1ef96bSpectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen LocationsNot Available
Tissue Locations
  • Neuron
  • Skeletal Muscle
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB023132
KNApSAcK IDNot Available
Chemspider ID388347
KEGG Compound IDC00317
BioCyc IDCPD-7043
BiGG IDNot Available
Wikipedia LinkAmylopectin
PubChem Compound439207
PDB IDNot Available
ChEBI ID28057
Food Biomarker OntologyNot Available
MarkerDB ID
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Giuffre B, Parini R, Rizzuti T, Morandi L, van Diggelen OP, Bruno C, Giuffre M, Corsello G, Mosca F: Severe neonatal onset of glycogenosis type IV: clinical and laboratory findings leading to diagnosis in two siblings. J Inherit Metab Dis. 2004;27(5):609-19. [PubMed:15669676 ]
  2. Yoshikawa H, Dyck PJ, Poduslo JF, Giannini C: Polyglucosan body axonal enlargement increases myelin spiral length but not lamellar number. J Neurol Sci. 1990 Aug;98(1):107-17. [PubMed:2230827 ]
  3. Mishler JM, Ricketts CR, Parkhouse EJ: The catabolism of low molecular weight-hydroxyethylated amylopectin in man. III. Further degradation of excreted polymer fragments. Int J Clin Pharmacol Ther Toxicol. 1980 Mar;18(3):120-1. [PubMed:6155356 ]
  4. Mishler JM, Ricketts CR, Parkhouse EJ, Borberg H, Gross R: The catabolism of low molecular weight-hydroxyethylated amylopectin in man. II. Changes in the urinary molecular profiles. Int J Clin Pharmacol Ther Toxicol. 1980 Jan;18(1):5-9. [PubMed:7364532 ]
  5. Miladi MI, Feki I, Choyakh F, Ben Hmida M, Zouari N, Mhiri C: Polysaccharide storage myopathy--case report and literature review. Clin Neuropathol. 2005 May-Jun;24(3):126-32. [PubMed:15943164 ]