4-氨基-6-羟基-2-巯基嘧啶
4-Amino-6-hydroxy-2-mercaptopyrimidine monohydrate
CAS: 65802-56-4
Molecular Formula: C4H7N3O2S
4-氨基-6-羟基-2-巯基嘧啶 - Names and Identifiers
4-氨基-6-羟基-2-巯基嘧啶 - Physico-chemical Properties
| Molecular Formula | C4H7N3O2S |
| Molar Mass | 161.18 |
| Melting Point | >300°C(lit.) |
| Boling Point | 557°C at 760 mmHg |
| Flash Point | 290.7°C |
| Water Solubility | Soluble in water and DMSO. |
| Solubility | DMSO (Slightly), Methanol (Slightly, Heated) |
| Vapor Presure | 3.03E-13mmHg at 25°C |
| Appearance | White Powder |
| Color | Off-White to Pale Yellow |
| BRN | 5795441 |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| MDL | MFCD00052384 |
| Physical and Chemical Properties | Commercial product with a purity of 98%, melting point> 330 °c. |
4-氨基-6-羟基-2-巯基嘧啶 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36 - Irritating to the eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | UW0495000 |
| TSCA | Yes |
| HS Code | 29335990 |
4-氨基-6-羟基-2-巯基嘧啶 - Reference Information
| Use | pharmaceutical intermediates. For the production of anti-malignant tumor drug 6-mercaptopurine. |
| production method | ethyl cyanoacetate and thiourea are cyclized to obtain: anhydrous ethanol and sodium ethoxide are added to the dry reaction tank, after heating to 76 °c with stirring, thiourea was added, and ethyl cyanoacetate was added dropwise at reflux. After addition, reflux was maintained for 4H, cooled to 30 °c, and filtered to obtain a crude product. Add 3.5 times water to dissolve, put into activated carbon decolorization, filtration, filtrate is heated to 90 deg C, stirring Dropwise add 40% acetic acid to pH4-5, cooling, filtration, to obtain the finished product. |
Last Update：2024-04-09 21:11:58
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