Name | 4,6-Dihydroxypyrimidine |
Synonyms | NSC 22838 4,6-PYRIMIDINEDIOL 4,6-Pyrimidinediol DihydroxypyriMidine 4,6-DIHYDROXYPYRIMIDINE 4,6-Dihydroxypyrimidine 4,6-dihydroxy pyrimidine 4, 6-2 hydroxy pyriMidine 4,6- twohydroxy pyriMidine 6-Hydroxy-1H-pyrimidin-4-one 4(1H)-PYRIMIDINONE, 6-HYDROXY- 4,6-Dihydroxypyrimidine (4,6-DHP) 4,6-Dihydroxypyrimidine, 4,6-Dihydroxy-1,3-diazine |
CAS | 1193-24-4 |
EINECS | 214-772-3 |
InChI | InChI=1/C4H4N2O2/c7-3-1-4(8)6-2-5-3/h1-2H,(H2,5,6,7,8) |
Molecular Formula | C4H4N2O2 |
Molar Mass | 112.09 |
Density | 1.4421 (rough estimate) |
Melting Point | >300 °C (lit.) |
Boling Point | 209.98°C (rough estimate) |
Water Solubility | 2.5 g/L (20 º C) |
Solubility | 2.5 g/L (20° C) |
Vapor Presure | 0.001Pa at 20℃ |
Appearance | White crystal |
Color | Yellow to orange |
BRN | 606433 |
pKa | 5.70±0.10(Predicted) |
Storage Condition | Inert atmosphere,Room Temperature |
Refractive Index | 1.4610 (estimate) |
MDL | MFCD00016733 |
Physical and Chemical Properties | White or light yellow needle-like crystals. Melting point 338 °c (230 °c). Soluble in hot water, ammonia and other alkali solution, insoluble in alcohol and ether. There may be several isomeric forms of the product. |
Use | For the production of sulfamonomethoxine and other drugs |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection |
WGK Germany | 1 |
RTECS | UW7523000 |
TSCA | Yes |
HS Code | 29335995 |
Hazard Note | Irritant |
Raw Materials | Ethyl malonate Sodium methoxide Formamide |
LogP | -2.8 at 25℃ |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Introduction | 4, 6-dihydroxypyrimidine (DHP), its tautomer is called 1-H-pyrimidine -4, 6-dione. 4, 6-dihydroxypyrimidine is usually used as a fine chemical raw material or an intermediate in organic synthesis, and is widely used in the preparation of medicines, pesticides and fungicides. For example, it can be used in the pharmaceutical industry to produce sulfa drugs sulfomotoxin, Vitamin B4, anti-tumor drugs and intermediates of auxiliary drugs; in addition, it can also be used to synthesize methoxyacrylate fungicides intermediates and so on. |
Uses | It is used as an intermediate in organic synthesis and used to produce sulfa drugs sulfamethoxine in the pharmaceutical industry. 4, 6-dihydroxypyrimidine is also an intermediate of vitamin B4, anti-tumor drugs and auxiliary drugs. For the production of sulfamonomethoxine and other drugs |
Production method | It is obtained by cycliding diethyl malonate (or dibutyl malonate) and formamide. |