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Record Information
StatusExpected but not Quantified
Creation Date2012-09-06 15:16:50 UTC
Update Date2017-12-07 02:48:08 UTC
Secondary Accession Numbers
  • HMDB14927
Metabolite Identification
Common NameGadopentetate dimeglumine
DescriptionGadopentetate dimeglumine is only found in individuals that have used or taken this drug. It is a complex of gadolinium with a chelating agent, diethylenetriamine penta-acetic acid (DTPA see pentetic acid), that is given to enhance the image in cranial and spinal MRIs. (From Martindale, The Extra Pharmacopoeia, 30th ed, p706)Based on the behavior of protons when placed in a strong magnetic field, which is interpreted and transformed into images by magnetic resonance (MR) instruments. MR images are based primarily on proton density and proton relaxation dynamics. MR instruments are sensitive to two different relaxation processes, the T1 (spin-lattice or longitudinal relaxation time) and T2 (spin-spin or transverse relaxation time). Paramagnetic agents contain one or more unpaired electrons that enhance the T1 and T2 relaxation rates of protons in their molecular environment. The proton relaxation effect (PRE) of an unpaired electron is 700 times stronger than that of a proton itself. In MRI, visualization of normal and pathological brain tissue depends in part on variations in the radio frequency signal intensity that occur with changes in proton density, alteration of the T1, and variation in T2. When placed in a magnetic field, gadopentetate dimeglumine shortens the T1 and T2 relaxation times in tissues where it accumulates. In the central nervous system (CNS), gadopentetate dimeglumine enhances visualization of normal tissues that lack a blood-brain barrier, such as the pituitary gland and the meninges. Gadopentetate dimeglumine does not cross the intact blood-brain barrier; therefore, it does not accumulate in normal brain tissue or in CNS lesions that have not caused an abnormal blood-brain barrier (e.g., cysts, mature post-operative scars). Abnormal vascularity or disruption of the blood-brain barrier allows accumulation of gadopentetate dimeglumine in lesions such as neoplasms, abscesses, and subacute infarcts. Outside the CNS, gadopentetate dimeglumine rapidly reaches equilibrium in the interstitial compartment and enhances signal in all tissues as a function of delivery and size of the interstitial compartment.This compound has also been found to inhibit human erythrocyte 6-phosphogluconate dehydrogenase.
Diethylenetriaminepentaacetic acid dimeglumine salt gadolinium chelateChEBI
Gadopentetic acid dimeglumine saltChEBI
Meglumine gadopentetateChEBI
Diethylenetriaminepentaacetate dimeglumine salt gadolinium chelateGenerator
Diethylenetriaminepentaacetic acid dimeglumine salt gadolinium chelic acidGenerator
Gadopentetic acid dimeglumineGenerator
Gadopentetate dimeglumine saltGenerator
Meglumine gadopentetic acidGenerator
DTPA, gadoliniumMeSH
Magnevist enteralMeSH
Berlex brand OF gadopentetate dimeglumineMeSH
Dimeglumine, gadopentetateMeSH
Gadolinium dtpaMeSH
Gadolinium dtpa dimeglumineMeSH
Gadolinium dtpa dimeglumine saltMeSH
Schering brand OF gadopentetate dimeglumineMeSH
Dimeglumine, gadolinium dtpaMeSH
Gadolinium dtpa disodium saltMeSH
Magnograf enteralMeSH
Diethylenetriaminepenta-acetic acid, gadoliniumMeSH
Gadolinium diethylenetriaminepenta acetic acidMeSH
Gadolinium diethylenetriaminepenta-acetic acidMeSH
Gadopentetic acidMeSH
Juste brand OF gadopentetate dimeglumineMeSH
Chemical FormulaC28H54GdN5O20
Average Molecular Weight938.0
Monoisotopic Molecular Weight938.260314726
IUPAC Namegadolinium(3+) ion bis((2R,3R,4R,5S)-6-(methylamino)hexane-1,2,3,4,5-pentol) 2-[bis({2-[(carboxylatomethyl)(carboxymethyl)amino]ethyl})amino]acetate
Traditional Namegadolinium(3+) ion H2dtpa bis(N-methyl-D(-)-glucamine)
CAS Registry Number86050-77-3
InChI Identifier
Chemical Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as pentacarboxylic acids and derivatives. These are carboxylic acids containing exactly five carboxyl groups.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassPentacarboxylic acids and derivatives
Direct ParentPentacarboxylic acids and derivatives
Alternative Parents
  • Pentacarboxylic acid or derivatives
  • Hexose monosaccharide
  • Monosaccharide
  • 1,3-aminoalcohol
  • 1,2-aminoalcohol
  • Secondary alcohol
  • Secondary aliphatic amine
  • Polyol
  • Secondary amine
  • Organic oxygen compound
  • Organic salt
  • Organooxygen compound
  • Organonitrogen compound
  • Hydrocarbon derivative
  • Organopnictogen compound
  • Organic nitrogen compound
  • Amine
  • Primary alcohol
  • Organic zwitterion
  • Alcohol
  • Aliphatic acyclic compound
Molecular FrameworkNot Available
External Descriptors

Biological location:


Industrial application:

Physical Properties
Experimental Properties
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
pKa (Strongest Acidic)0.094ChemAxon
pKa (Strongest Basic)9.59ChemAxon
Physiological Charge-4ChemAxon
Hydrogen Acceptor Count13ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area204.71 ŲChemAxon
Rotatable Bond Count28ChemAxon
Refractivity118.96 m³·mol⁻¹ChemAxon
Polarizability34.17 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
SpectraNot Available
Biological Properties
Cellular Locations
  • Cytoplasm
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationNot Available
PathwaysNot Available
Normal Concentrations
BloodExpected but not Quantified Not AvailableNot AvailableTaking drug identified by DrugBank entry DB00789 details
UrineExpected but not Quantified Not AvailableNot AvailableTaking drug identified by DrugBank entry DB00789 details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB00789
Phenol Explorer Compound IDNot Available
FoodDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID50087
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkGadopentetic acid
METLIN IDNot Available
PubChem Compound55466
PDB IDNot Available
ChEBI ID31797
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available


General function:
Involved in oxidoreductase activity
Specific function:
Catalyzes the oxidative decarboxylation of 6-phosphogluconate to ribulose 5-phosphate and CO(2), with concomitant reduction of NADP to NADPH (By similarity).
Gene Name:
Uniprot ID:
Molecular weight:
  1. Akkemik E, Budak H, Ciftci M: Effects of some drugs on human erythrocyte 6-phosphogluconate dehydrogenase: an in vitro study. J Enzyme Inhib Med Chem. 2010 Aug;25(4):476-9. doi: 10.3109/14756360903257900. [PubMed:20235752 ]
  2. Berman HM, Westbrook J, Feng Z, Gilliland G, Bhat TN, Weissig H, Shindyalov IN, Bourne PE: The Protein Data Bank. Nucleic Acids Res. 2000 Jan 1;28(1):235-42. [PubMed:10592235 ]