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Displaying metabolites 4161 - 4180 of 5662 in total
HMDB ID
CAS Number
Name StructureFormula
Average Mass
Monoisotopic Mass
Biospecimen Location
2-Hydroxybutyric acid HMDB0000008 structure imageC4H8O3

104.105
104.047344118
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Sweat
  • Urine
3-Hydroxybutyric acid HMDB0000011 structure imageC4H8O3

104.1045
104.047344122
  • Blood
  • Cellular Cytoplasm
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
(S)-3-Hydroxyisobutyric acid HMDB0000023 structure imageC4H8O3

104.1045
104.047344122
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
Butyric acid HMDB0000039 structure imageC4H8O2

88.1051
88.0524295
  • Blood
  • Breast Milk
  • Breath
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
(R)-3-Hydroxyisobutyric acid HMDB0000336 structure imageC4H8O3

104.1045
104.047344122
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Urine
(S)-3-Hydroxybutyric acid HMDB0000442 structure imageC4H8O3

104.1045
104.047344122
  • Blood
  • Urine
Butanone HMDB0000474 structure imageC4H8O

72.1057
72.057514878
  • Blood
  • Breath
  • Feces
  • Saliva
  • Urine
4-Hydroxybutyric acid HMDB0000710 structure imageC4H8O3

104.1045
104.047344122
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
alpha-Hydroxyisobutyric acid HMDB0000729 structure imageC4H8O3

104.1045
104.047344122
  • Blood
  • Feces
  • Saliva
  • Urine
Allantoic acid HMDB0001209 structure imageC4H8N4O4

176.1307
176.054554764
  • Blood
  • Urine
3-Methylthiopropionic acid HMDB0001527 structure imageC4H8O2S

120.17
120.02450019
  • Feces
  • Urine
Isobutyric acid HMDB0001873 structure imageC4H8O2

88.1051
88.0524295
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
A,b-Dihydroxyisobutyric acid HMDB0002601 structure imageC4H8O4

120.1039
120.042258744
  • Blood
  • Urine
Erythrose HMDB0002649 structure imageC4H8O4

120.1039
120.042258744
  • Blood
  • Feces
  • Urine
Acetoin HMDB0003243 structure imageC4H8O2

88.1051
88.0524295
  • Blood
  • Feces
  • Saliva
  • Urine
L-Aspartyl-4-phosphate HMDB0012250 structure imageC4H8NO7P

213.0826
213.003838127
  • Urine
Ethyl acetate HMDB0031217 structure imageC4H8O2

88.1051
88.0524295
  • Feces
  • Saliva
  • Urine
Allyl methyl sulfone HMDB0112255 structure imageC4H8O2S

120.17
120.024500672
  • Breast Milk
  • Urine
hydroxyasparagine ThumbC4H8N2O4

148.118
148.048406746
  • Blood
  • Urine
2-Hydroxybutanoic acid ThumbC4H8O3

104.1045
104.047344122
  • Blood
  • Urine
Displaying metabolites 4161 - 4180 of 5662 in total