Filter by metabolite status (default all):
Clicking on any metabolite link will take you to the Human Metabolome Database.
Displaying metabolites 121 - 140 of 1237 in total
HMDB ID
CAS Number
Name StructureFormula
Average Mass
Monoisotopic Mass
Biospecimen Location
Pipecolic acid HMDB0000070 structure imageC6H11NO2

129.157
129.078978601
  • Amniotic Fluid
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
Proline HMDB0000162 structure imageC5H9NO2

115.1305
115.063328537
  • Blood
  • Breast Milk
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Sweat
  • Urine
Propionic acid HMDB0000237 structure imageC3H6O2

74.0785
74.036779436
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
Phosphoenolpyruvic acid HMDB0000263 structure imageC3H5O6P

168.042
167.982374404
  • Blood
  • Cellular Cytoplasm
  • Saliva
Potassium HMDB0000586 structure imageK

39.0983
38.963706861
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Saliva
  • Urine
Propionylcarnitine HMDB0000824 structure imageC10H19NO4

217.265
217.131408096
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
Phosphorus HMDB0001315 structure imageP

30.9738
30.973761512
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Saliva
  • Urine
Phosphorylcholine HMDB0001565 structure imageC5H15NO4P

184.1507
184.073869485
  • Blood
  • Breast Milk
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
Phthalic acid HMDB0002107 structure imageC8H6O4

166.1308
166.02660868
  • Blood
  • Feces
  • Saliva
  • Urine
Picolinic acid HMDB0002243 structure imageC6H5NO2

123.1094
123.032028409
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
Propanal HMDB0003366 structure imageC3H6O

58.0791
58.041864814
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
Proline betaine HMDB0004827 structure imageC7H13NO2

143.1836
143.094628665
  • Blood
  • Feces
  • Saliva
  • Urine
Prolylglycine HMDB0011178 structure imageC7H12N2O3

172.1818
172.08479226
  • Blood
  • Feces
  • Saliva
  • Urine
Propenoylcarnitine HMDB0013124 structure imageC10H17NO4

215.2463
215.115758037
  • Blood
  • Feces
  • Saliva
  • Urine
Platinum HMDB0013671 structure imagePt

195.084
194.964774449
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Saliva
  • Urine
Propane HMDB0031630 structure imageC3H8

44.0956
44.062600256
  • Saliva
Piperidine HMDB0034301 structure imageC5H11N

85.1475
85.089149357
  • Blood
  • Feces
  • Saliva
  • Urine
Piperitone HMDB0034975 structure imageC10H16O

152.2334
152.120115134
  • Blood
  • Saliva
  • Urine
Polyethylene glycol HMDB0037790 structure imageC2H6O2

62.0678
62.036779436
  • Saliva
Prop-2-enylcyclohexane HMDB0061920 structure imageC9H16

124.2233
124.125200512
  • Saliva
Displaying metabolites 121 - 140 of 1237 in total