Record Information
Version 1.0
Update Date 1/22/2018 12:54:54 PM
Metabolite IDPAMDB000513
Name: Carbamic acid
Description:Carbamic acid products of several amines, such as beta-N-methylamino-L-alanine (BMAA), ethylenediamine, and L-cysteine have been implicated in toxicity. Studies suggested that a significant portion of amino-compounds in biological samples (that naturally contain CO2/bicarbonate) can be present as a carbamic acid. There has been no obvious species specificity for their formation and no preference for 1 or 2 degree amines. Many biological reactions have also been described in the literature that involve the reaction of CO2 with amino groups of biomolecules. For example, CO2 generated from cellular respiration is expired in part through the reversible formation of a carbamate between CO2 and the -amino groups of the alpha and beta-chains of hemoglobin. The carbamic acid is also a substrate for glucuronidation and results in a stable carbamate glucuronide metabolite. The detection and characterization of these products has been facilitated greatly by the advent of soft ionization mass spectrometry techniques and high field NMR instrumentation. (PMID: 16268118, 17168688, 12929145)
  • Aminoformate
  • Aminoformic acid
  • Carbamate
  • Carbamate ion
  • Carbamic acid
  • Carbamic acid ion
  • Chlorphenesin carbamate
  • Chlorphenesin carbamic acid
  • Maolate
  • Maolic acid
Chemical Formula: CH3NO2
Average Molecular Weight: 61.04
Monoisotopic Molecular Weight: 61.016378345
CAS number: 463-77-4
IUPAC Name:carbamic acid
Traditional IUPAC Name: carbamic acid
Chemical Taxonomy
Taxonomy DescriptionThis compound belongs to the class of organic compounds known as carbamic acids. These are compounds containing the carbamic acid functional group, with the general structure RN(R')C(=O)OH or RN(R')C(=O)[O-] where R,R' = H or organyl group.
Kingdom Organic compounds
Super ClassOrganic acids and derivatives
Class Carboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct Parent Carbamic acids
Alternative Parents
  • Carbamic acid
  • Monocarboxylic acid or derivatives
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organonitrogen compound
  • Aliphatic acyclic compound
Molecular Framework Aliphatic acyclic compounds
External Descriptors
Physical Properties
State: Solid
Melting point: Not Available
Experimental Properties:
Predicted Properties
Water Solubility379.0 mg/mLALOGPS
pKa (Strongest Acidic)3.92ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area63.32 Å2ChemAxon
Rotatable Bond Count0ChemAxon
Refractivity11.32 m3·mol-1ChemAxon
Polarizability4.68 Å3ChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations: Cytoplasm
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-03di-9000000000-33c2cd9e9f87e70aeee7View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-03dl-9000000000-80dc946b5f814bf962fcView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0006-9000000000-db68c8dff28932d0bd97View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-03dl-9000000000-54e827d7f4201ae683bfView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-03dl-9000000000-3158c8b265d264989bd7View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9000000000-24350f23db0893ec042cView in MoNA
  • Kanehisa, M., Goto, S., Sato, Y., Furumichi, M., Tanabe, M. (2012). "KEGG for integration and interpretation of large-scale molecular data sets." Nucleic Acids Res 40:D109-D114. Pubmed: 22080510
  • Keseler, I. M., Collado-Vides, J., Santos-Zavaleta, A., Peralta-Gil, M., Gama-Castro, S., Muniz-Rascado, L., Bonavides-Martinez, C., Paley, S., Krummenacker, M., Altman, T., Kaipa, P., Spaulding, A., Pacheco, J., Latendresse, M., Fulcher, C., Sarker, M., Shearer, A. G., Mackie, A., Paulsen, I., Gunsalus, R. P., Karp, P. D. (2011). "EcoCyc: a comprehensive database of Escherichia coli biology." Nucleic Acids Res 39:D583-D590. Pubmed: 21097882
  • Rendon von Osten, J., Epomex, C., Tinoco-Ojanguren, R., Soares, A. M., Guilhermino, L. (2004). "Effect of pesticide exposure on acetylcholinesterase activity in subsistence farmers from Campeche, Mexico." Arch Environ Health 59:418-425. Pubmed: 16268118
  • Schaefer WH: Reaction of primary and secondary amines to form carbamic acid glucuronides. Curr Drug Metab. 2006 Dec;7(8):873-81. Pubmed: 17168688
  • Smit LA, van-Wendel-de-Joode BN, Heederik D, Peiris-John RJ, van der Hoek W: Neurological symptoms among Sri Lankan farmers occupationally exposed to acetylcholinesterase-inhibiting insecticides. Am J Ind Med. 2003 Sep;44(3):254-64. Pubmed: 12929145
  • van der Werf, M. J., Overkamp, K. M., Muilwijk, B., Coulier, L., Hankemeier, T. (2007). "Microbial metabolomics: toward a platform with full metabolome coverage." Anal Biochem 370:17-25. Pubmed: 17765195
  • Winder, C. L., Dunn, W. B., Schuler, S., Broadhurst, D., Jarvis, R., Stephens, G. M., Goodacre, R. (2008). "Global metabolic profiling of Escherichia coli cultures: an evaluation of methods for quenching and extraction of intracellular metabolites." Anal Chem 80:2939-2948. Pubmed: 18331064
Synthesis Reference: Not Available
Material Safety Data Sheet (MSDS) Download (PDF)
External Links:
Pubchem Compound ID277
Kegg IDC01563
ChemSpider ID271
WikipediaCarbamic acid
Ligand ExpoOUT