Record Information |
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Version | 5.0 |
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Status | Detected and Quantified |
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Creation Date | 2006-05-22 15:12:24 UTC |
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Update Date | 2023-02-21 17:16:30 UTC |
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HMDB ID | HMDB0002991 |
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Secondary Accession Numbers | - HMDB0060150
- HMDB02991
- HMDB60150
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Metabolite Identification |
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Common Name | Cysteamine |
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Description | Cysteamine is a product of the constitutive degradation of coenzyme A, a process that occurs in all tissues, although some tissues such as brain and heart may have exceptionally high coenzyme A turnover rates. Cysteamine has only one known function, and that is as a precursor for the formation of hypotaurine, which is subsequently oxidized to taurine. The rate of cysteamine production as a result of coenzyme A breakdown is not well understood but it is clear that cysteamine levels are not as dramatically affected by dietary habits as are cysteine levels. Cysteamine is generated from hypotaurine by cysteamine dioxygenase (EC:1.13.11.19), an enzyme that was recently identified in mammals (PMID:17581819 ). Cysteamine is the simplest stable aminothiol found in the body. It is used in the treatment of disorders of cystine excretion. Cysteamine cleaves the disulfide bond with cysteine to produce molecules that can escape the metabolic defect in cystinosis and cystinuria. Cyst(e)amine may also serve as an endogenous regulator of immune system activity as well as a potential therapeutic agent for the treatment of Huntington disease. Cysteamine is also used as a radiation-protective agent that oxidizes in air to form cystamine. It can be given intravenously or orally to treat radiation sickness. |
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Structure | InChI=1S/C2H7NS/c3-1-2-4/h4H,1-3H2 |
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Synonyms | Value | Source |
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2-Amino-1-ethanethiol | ChEBI | 2-AMINO-ethanethiol | ChEBI | 2-Aminoethanethiol | ChEBI | beta-Aminoethanethiol | ChEBI | beta-Aminoethylthiol | ChEBI | beta-MEA | ChEBI | beta-Mercaptoethylamine | ChEBI | MEA | ChEBI | Mercaptamina | ChEBI | Mercaptamine | ChEBI | Mercaptaminum | ChEBI | Thioethanolamine | ChEBI | b-Aminoethanethiol | Generator | Β-aminoethanethiol | Generator | b-Aminoethylthiol | Generator | Β-aminoethylthiol | Generator | b-MEA | Generator | Β-mea | Generator | b-Mercaptoethylamine | Generator | Β-mercaptoethylamine | Generator | (2-Mercaptoethyl)amine | HMDB | 2-Aminoethyl mercaptan | HMDB | 2-Mercaptoethanamine | HMDB | Aminoethyl mercaptan | HMDB | Becaptan | HMDB | CASH | HMDB | Cisteamina | HMDB | Cysteamide | HMDB | Cysteamin | HMDB | Cysteaminium | HMDB | Cysteinamine | HMDB | Decarboxycysteine | HMDB | Ethanethiolamine | HMDB | Lambraten | HMDB | Lambratene | HMDB | Mecramine | HMDB | Mercamin | HMDB | Mercamine | HMDB | Mercaptamin | HMDB | Merkamin | HMDB | Riacon | HMDB | 35S-Labeled cysteamine | HMDB | Cystagon | HMDB | Cysteamine hydrobromide | HMDB | Hydrochloride, cysteamine | HMDB | Tosylate, cysteamine | HMDB | Cysteamine dihydrochloride | HMDB | Cysteamine hydrochloride | HMDB | Cysteamine maleate (1:1) | HMDB | Cysteamine tosylate | HMDB | Mercaptoethylamine | HMDB | 2 Aminoethanethiol | HMDB | Cysteamine bitartrate | HMDB | Cysteamine tartrate | HMDB | Cysteamine tartrate (1:1) | HMDB | Hydrobromide, cysteamine | HMDB | Tartrate, cysteamine | HMDB | beta Mercaptoethylamine | HMDB | Bitartrate, cysteamine | HMDB | Cysteamine, 35S labeled | HMDB | Cysteamine, 35S-labeled | HMDB | Dihydrochloride, cysteamine | HMDB |
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Chemical Formula | C2H7NS |
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Average Molecular Weight | 77.149 |
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Monoisotopic Molecular Weight | 77.029919919 |
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IUPAC Name | 2-aminoethane-1-thiol |
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Traditional Name | cysteamine |
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CAS Registry Number | 60-23-1 |
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SMILES | NCCS |
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InChI Identifier | InChI=1S/C2H7NS/c3-1-2-4/h4H,1-3H2 |
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InChI Key | UFULAYFCSOUIOV-UHFFFAOYSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as alkylthiols. These are organic compounds containing the thiol functional group linked to an alkyl chain. |
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Kingdom | Organic compounds |
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Super Class | Organosulfur compounds |
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Class | Thiols |
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Sub Class | Alkylthiols |
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Direct Parent | Alkylthiols |
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Alternative Parents | |
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Substituents | - Alkylthiol
- Organic nitrogen compound
- Organopnictogen compound
- Hydrocarbon derivative
- Primary amine
- Organonitrogen compound
- Primary aliphatic amine
- Amine
- Aliphatic acyclic compound
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Molecular Framework | Aliphatic acyclic compounds |
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External Descriptors | |
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Ontology |
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Physiological effect | Not Available |
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Disposition | |
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Process | |
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Role | |
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Physical Properties |
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State | Solid |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | 98 °C | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
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Experimental Chromatographic Properties | Not Available |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Retention Times UnderivatizedChromatographic Method | Retention Time | Reference |
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Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022. | 0.3 minutes | 32390414 | Predicted by Siyang on May 30, 2022 | 8.8576 minutes | 33406817 | Predicted by Siyang using ReTip algorithm on June 8, 2022 | 4.43 minutes | 32390414 | AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid | 266.1 seconds | 40023050 | Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid | 858.1 seconds | 40023050 | Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid | 365.6 seconds | 40023050 | Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid | 100.3 seconds | 40023050 | Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid | 266.2 seconds | 40023050 | RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 71.8 seconds | 40023050 | Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid | 270.5 seconds | 40023050 | BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid | 295.8 seconds | 40023050 | HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate) | 762.9 seconds | 40023050 | UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid | 601.1 seconds | 40023050 | BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid | 47.8 seconds | 40023050 | UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid | 751.1 seconds | 40023050 | SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 228.1 seconds | 40023050 | RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid | 266.0 seconds | 40023050 | MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate | 588.9 seconds | 40023050 | KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA | 428.2 seconds | 40023050 | Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water | 250.9 seconds | 40023050 |
Predicted Kovats Retention IndicesUnderivatizedMetabolite | SMILES | Kovats RI Value | Column Type | Reference |
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Cysteamine | NCCS | 1313.3 | Standard polar | 33892256 | Cysteamine | NCCS | 686.8 | Standard non polar | 33892256 | Cysteamine | NCCS | 767.8 | Semi standard non polar | 33892256 |
DerivatizedDerivative Name / Structure | SMILES | Kovats RI Value | Column Type | Reference |
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Cysteamine,1TMS,isomer #1 | C[Si](C)(C)SCCN | 999.4 | Semi standard non polar | 33892256 | Cysteamine,1TMS,isomer #1 | C[Si](C)(C)SCCN | 1000.8 | Standard non polar | 33892256 | Cysteamine,1TMS,isomer #1 | C[Si](C)(C)SCCN | 1500.5 | Standard polar | 33892256 | Cysteamine,1TMS,isomer #2 | C[Si](C)(C)NCCS | 1046.5 | Semi standard non polar | 33892256 | Cysteamine,1TMS,isomer #2 | C[Si](C)(C)NCCS | 887.9 | Standard non polar | 33892256 | Cysteamine,1TMS,isomer #2 | C[Si](C)(C)NCCS | 1266.8 | Standard polar | 33892256 | Cysteamine,2TMS,isomer #1 | C[Si](C)(C)NCCS[Si](C)(C)C | 1203.6 | Semi standard non polar | 33892256 | Cysteamine,2TMS,isomer #1 | C[Si](C)(C)NCCS[Si](C)(C)C | 1217.9 | Standard non polar | 33892256 | Cysteamine,2TMS,isomer #1 | C[Si](C)(C)NCCS[Si](C)(C)C | 1253.5 | Standard polar | 33892256 | Cysteamine,2TMS,isomer #2 | C[Si](C)(C)N(CCS)[Si](C)(C)C | 1270.3 | Semi standard non polar | 33892256 | Cysteamine,2TMS,isomer #2 | C[Si](C)(C)N(CCS)[Si](C)(C)C | 1210.9 | Standard non polar | 33892256 | Cysteamine,2TMS,isomer #2 | C[Si](C)(C)N(CCS)[Si](C)(C)C | 1279.0 | Standard polar | 33892256 | Cysteamine,3TMS,isomer #1 | C[Si](C)(C)SCCN([Si](C)(C)C)[Si](C)(C)C | 1467.9 | Semi standard non polar | 33892256 | Cysteamine,3TMS,isomer #1 | C[Si](C)(C)SCCN([Si](C)(C)C)[Si](C)(C)C | 1465.6 | Standard non polar | 33892256 | Cysteamine,3TMS,isomer #1 | C[Si](C)(C)SCCN([Si](C)(C)C)[Si](C)(C)C | 1295.4 | Standard polar | 33892256 | Cysteamine,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)SCCN | 1206.7 | Semi standard non polar | 33892256 | Cysteamine,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)SCCN | 1250.7 | Standard non polar | 33892256 | Cysteamine,1TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)SCCN | 1643.3 | Standard polar | 33892256 | Cysteamine,1TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)NCCS | 1229.9 | Semi standard non polar | 33892256 | Cysteamine,1TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)NCCS | 1152.8 | Standard non polar | 33892256 | Cysteamine,1TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)NCCS | 1445.3 | Standard polar | 33892256 | Cysteamine,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)NCCS[Si](C)(C)C(C)(C)C | 1671.0 | Semi standard non polar | 33892256 | Cysteamine,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)NCCS[Si](C)(C)C(C)(C)C | 1624.5 | Standard non polar | 33892256 | Cysteamine,2TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)NCCS[Si](C)(C)C(C)(C)C | 1521.9 | Standard polar | 33892256 | Cysteamine,2TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)N(CCS)[Si](C)(C)C(C)(C)C | 1670.3 | Semi standard non polar | 33892256 | Cysteamine,2TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)N(CCS)[Si](C)(C)C(C)(C)C | 1619.0 | Standard non polar | 33892256 | Cysteamine,2TBDMS,isomer #2 | CC(C)(C)[Si](C)(C)N(CCS)[Si](C)(C)C(C)(C)C | 1487.2 | Standard polar | 33892256 | Cysteamine,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)SCCN([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2090.0 | Semi standard non polar | 33892256 | Cysteamine,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)SCCN([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 2051.6 | Standard non polar | 33892256 | Cysteamine,3TBDMS,isomer #1 | CC(C)(C)[Si](C)(C)SCCN([Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C | 1687.2 | Standard polar | 33892256 |
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General References | - Dominy JE Jr, Simmons CR, Hirschberger LL, Hwang J, Coloso RM, Stipanuk MH: Discovery and characterization of a second mammalian thiol dioxygenase, cysteamine dioxygenase. J Biol Chem. 2007 Aug 31;282(35):25189-98. Epub 2007 Jun 20. [PubMed:17581819 ]
- Pastore A, Massoud R, Motti C, Lo Russo A, Fucci G, Cortese C, Federici G: Fully automated assay for total homocysteine, cysteine, cysteinylglycine, glutathione, cysteamine, and 2-mercaptopropionylglycine in plasma and urine. Clin Chem. 1998 Apr;44(4):825-32. [PubMed:9554495 ]
- Sonies BC, Almajid P, Kleta R, Bernardini I, Gahl WA: Swallowing dysfunction in 101 patients with nephropathic cystinosis: benefit of long-term cysteamine therapy. Medicine (Baltimore). 2005 May;84(3):137-46. [PubMed:15879904 ]
- Lochman P, Adam T, Friedecky D, Hlidkova E, Skopkova Z: High-throughput capillary electrophoretic method for determination of total aminothiols in plasma and urine. Electrophoresis. 2003 Apr;24(7-8):1200-7. [PubMed:12707912 ]
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- Gahl WA, Schneider JA, Schulman JD, Thoene JG, Reed GF: Predicted reciprocal serum creatinine at age 10 years as a measure of renal function in children with nephropathic cystinosis treated with oral cysteamine. Pediatr Nephrol. 1990 Mar;4(2):129-35. [PubMed:2397178 ]
- Smolin LA, Clark KF, Thoene JG, Gahl WA, Schneider JA: A comparison of the effectiveness of cysteamine and phosphocysteamine in elevating plasma cysteamine concentration and decreasing leukocyte free cystine in nephropathic cystinosis. Pediatr Res. 1988 Jun;23(6):616-20. [PubMed:3393396 ]
- Levtchenko EN, van Dael CM, de Graaf-Hess AC, Wilmer MJ, van den Heuvel LP, Monnens LA, Blom HJ: Strict cysteamine dose regimen is required to prevent nocturnal cystine accumulation in cystinosis. Pediatr Nephrol. 2006 Jan;21(1):110-3. Epub 2005 Oct 27. [PubMed:16252107 ]
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- Schneider JA, Clark KF, Greene AA, Reisch JS, Markello TC, Gahl WA, Thoene JG, Noonan PK, Berry KA: Recent advances in the treatment of cystinosis. J Inherit Metab Dis. 1995;18(4):387-97. [PubMed:7494398 ]
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