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Thiourea

Catalog No. A12828 Name Alfa Aesar
CAS Number 62-56-6 Website
M. F. CH4N2S Telephone
M. W. 76.12086 Fax
Purity 99% Email
Storage Chembase ID: 103556

SYNONYMS

Title
硫脲
IUPAC name
thiourea
IUPAC Traditional name
thion
Synonyms
Thiocarbamide

DATABASE IDS

CAS Number 62-56-6
Beilstein Number 605327
MDL Number MFCD00008067
EC Number 200-543-5
Merck Index 149367

PROPERTIES

Risk Statements 22-40-51/53-63
RTECS YU2800000
Safety Statements 36/37-61
TSCA Listed
Hazard Class 9
UN Number UN3077
Packing Group III
GHS Pictograms GHS07
GHS Pictograms GHS08
GHS Pictograms GHS09
GHS Hazard statements H351-H361-H302-H411-H401
European Hazard Symbols X
European Hazard Symbols Nature polluting Nature polluting (N)
GHS Precautionary statements P280H-P273
Purity 99%
Density 1.405
Melting Point 172-178°C

DETAILS

REFERENCES

  • Reagent for the conversion of alkyl halides to thiols by base hydrolysis of the isothiouronium salts; see also N-Acetylthiourea, B21198. Cleavage of isothiouronium salts with base and alkylation of the resulting thiolate has been used as a convenient synthesis of unsymmetrical sulfides: Synth. Commun., 14, 209 (1984).
  • Epoxides are converted to episulfides: J. Org. Chem., 26, 3467 (1961). The 2,3-epoxy alcohols resulting from the Sharpless enantioselective epoxidation can be converted to the corresponding episulfides with retention at both centers, using Ti(O-i-Pr)4 as mediator: J. Org. Chem., 53, 4114 (1988).
  • Widely used in heterocyclic syntheses, e.g. of thiazoles and pyrimidines.
  • Has been used in a convenient synthesis of isothiocyanates from oximes via the nitrile oxide: Tetrahedron Lett., 34, 8283 (1993); see also Benzaldoxime, A12053: