16328-63-5
16328-63-5 structure
- Name: 2H-Imidazo[4,5-b]pyrazin-2-one,1,3-dihydro-
- Chemical Name: 1,3-dihydroimidazo[4,5-b]pyrazin-2-one
- CAS Number: 16328-63-5
- Molecular Formula: C5H4N4O
- Molecular Weight: 136.11100
- Create Date: 2018-12-31 10:39:15
- Modify Date: 2025-09-28 08:31:00
| Name | 1,3-dihydroimidazo[4,5-b]pyrazin-2-one |
|---|---|
| Synonyms | 2-Oxo-1H,3H-imidazo-<4,5-b>pyrazin |
| Density | 1.455g/cm3 |
|---|---|
| Boiling Point | 153.4ºC at 760mmHg |
| Molecular Formula | C5H4N4O |
| Molecular Weight | 136.11100 |
| Flash Point | 46.6ºC |
| Exact Mass | 136.03900 |
| PSA | 74.43000 |
| Vapour Pressure | 3.33mmHg at 25°C |
| Index of Refraction | 1.604 |
| Storage condition | 2-8°C |
| HS Code | 2933990090 |
|---|
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16328-63-5 |
| Literature: Muehlmann; Day Journal of the American Chemical Society, 1956 , vol. 78, p. 242 |
| Precursor 2 | |
|---|---|
| DownStream 5 | |
![2-methoxy-1-methyl-1H-imidazo[4,5-b]pyrazine structure](https://image.chemsrc.com/caspic/033/84996-64-5.png)
![2-methoxy-4-methyl-4H-imidazo[4,5-b]pyrazine structure](https://image.chemsrc.com/caspic/240/84996-54-3.png)
![1,4-dimethyl-1H-imidazo[4,5-b]pyrazin-2(4H)-one structure](https://image.chemsrc.com/caspic/202/84996-55-4.png)
![7,9-dimethyl-2,5,7,9-tetrazabicyclo[4.3.0]nona-1,3,5-trien-8-one structure](https://image.chemsrc.com/caspic/278/84996-53-2.png)
![2-Propanone,1-(1H-imidazo[4,5-b]pyrazin-2-ylthio)- structure](https://image.chemsrc.com/caspic/379/79100-25-7.png)
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |