| | Identification | More |  | [Name] 
 ETHYLTHIOUREA
 |  | [CAS] 
 625-53-6
 |  | [Synonyms] 
 1-ETHYL-2-THIOUREA
 1-ETHYLTHIOUREA
 ETHYLTHIOUREA
 N-ETHYL-2-THIOUREA
 N-ETHYLTHIOUREA
 N-ETHYLTHIOUREA, POLYMER-BOUND
 1-ethyl-2-thio-ure
 ethyl-2-thiourea
 Ethylthiourea,99%
 Thiourea, ethyl-
 |  | [EINECS(EC#)] 
 210-899-3
 |  | [Molecular Formula] 
 C3H8N2S
 |  | [MDL Number] 
 MFCD00004939
 |  | [Molecular Weight] 
 104.17
 |  | [MOL File] 
 625-53-6.mol
 | 
 | Chemical Properties | Back Directory |  | [Melting point ] 
 108-110 °C(lit.)
 |  | [Boiling point ] 
 132 °C
 |  | [density ] 
 1.055 (estimate)
 |  | [refractive index ] 
 1.5500 (estimate)
 |  | [storage temp. ] 
 Store at RT
 |  | [solubility ] 
 methanol: soluble25mg/mL, clear, colorless
 |  | [form ] 
 Solid
 |  | [pka] 
 14.97±0.29(Predicted)
 |  | [color ] 
 White to Off-White
 |  | [Water Solubility ] 
 Soluble in water (24g/L).
 |  | [BRN ] 
 1699551
 |  | [InChI] 
 InChI=1S/C3H8N2S/c1-2-5-3(4)6/h2H2,1H3,(H3,4,5,6)
 |  | [InChIKey] 
 GMEHFXXZSWDEDB-UHFFFAOYSA-N
 |  | [SMILES] 
 N(CC)C(N)=S
 |  | [CAS DataBase Reference] 
 625-53-6(CAS DataBase Reference)
 |  | [EPA Substance Registry System] 
 Ethylthiourea (625-53-6)
 | 
 | Safety Data | Back Directory |  | [Hazard Codes ] 
 T
 |  | [Risk Statements ] 
 R25:Toxic if swallowed.
 |  | [Safety Statements ] 
 S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
 S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
 |  | [RIDADR ] 
 UN 2811 6.1/PG 3
 
 |  | [WGK Germany ] 
 3
 
 |  | [RTECS ] 
 YT3700000
 
 |  | [TSCA ] 
 Yes
 |  | [HazardClass ] 
 6.1
 |  | [PackingGroup ] 
 III
 |  | [Safety Profile] 
 Poison by ingestion. 
SYN: 1-ETHYLTHIOUREA 
Experimental teratogenic effects. Mutation 
data reported. When heated to decomposition it emits toxic fumes of Sox and NOx.
 |  | [Hazardous Substances Data] 
 625-53-6(Hazardous Substances Data)
 |  | [Toxicity] 
 mouse,LDLo,oral,500mg/kg (500mg/kg),Teratology, The International Journal of Abnormal Development.  Vol. 23, Pg. 335, 1981.
 | 
 | Hazard Information | Back Directory |  | [Uses] 
 N-Ethylthiourea was used in the preparation of Re (III) complexes, which are precursors for the new rhenium complexes, potentially useful in nuclear medicine. It was also used in two-step protocol for the first chemoselective cleavage of 2-hydroxy acid amides
 |  | [Definition] 
 ChEBI: N-ethylthiourea is a member of the class of thioureas that is thiourea in which one of the hydrogens is replaced by an ethyl group. It is functionally related to a thiourea.
 |  | [General Description] 
 
 N-Ethylthiourea forms adduct with silver halides and their single crystal X-ray structural and spectroscopic characterizations are described.  |  | [reaction suitability] 
 reagent type: catalyst
 reagent type: chelator
 |  | [Biological Activity] 
 Potent,  selective  and  reversible  inhibitor  of  isoform  II  NO  synthase  (IC  50 =  13  nM;  approximately  20-  and  30-fold  selective  over  isoforms  I  and  III  respectively).
 |  | [Purification Methods] 
 Crystallise the thiourea from EtOH, MeOH or ether. [Beilstein 4 IV 374.]
 | 
 |  |