- Shanghai Nianxing Industrial Co., Ltd
- China
- Product Name: 3-Amino-3-pyrazolin-5-one
- Price: Check
- Purity: 98.0%
- Stocking Period: 10 Day
- Contact: Yang
- Email: sales@echemcloud.com
- Shanghai Jizhi Biochemical Technology Co., Ltd
- China
- Product Name: 3-Amino-3-pyrazolin-5-one
- Price: ￥118.0/1g ￥218.0/5g
- Purity: 98.0%
- Stocking Period: 2 Day
- Contact: Liu jia
- Email: 2130147988@qq.com
- Dayang Chem (Hangzhou) Co., Ltd.
- China
- Product Name: 3-Amino-3-pyrazolin-5-one
- Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
- Purity: 98.0%
- Stocking Period: Inquiry
- Contact: Ms Wang
- Email: enquiry@dycnchem.com
28491-52-3
28491-52-3 structure
- Name: 3-Amino-3-pyrazolin-5-one
- Chemical Name: 3-Amino-1,2-dihydropyrazol-5-one
- CAS Number: 28491-52-3
- Molecular Formula: C3H5N3O
- Molecular Weight: 99.091
- Create Date: 2018-02-12 08:00:00
- Modify Date: 2024-01-03 10:51:05
| Name | 3-Amino-1,2-dihydropyrazol-5-one |
|---|---|
| Synonyms |
5-Amino-1,2-dihydro-3H-pyrazol-3-one
3-amino-5-pyrazole (−)-Selagine 5-Amino-1,2-dihydro-pyrazol-3-on 5-amino-3-pyrazolone 5-Amino-1H-pyrazol-3(2H)-one 3-Amino-1H-pyrazol-5-ol Huperzine A 3-aminopyrazol-5-one 5-amino-1,2-dihydropyrazol-3-one 5-Amino-3-hydroxy-1H-pyrazole (−)-Huperzine A 5-amino-3-pyrrazolone (-)-Huperzine A 3-Amino-5-pyrazolone 3-Amino-3-pyrazolin-5-one 3H-Pyrazol-3-one, 5-amino-1,2-dihydro- |
| Density | 1.6±0.1 g/cm3 |
|---|---|
| Boiling Point | 479.5±25.0 °C at 760 mmHg |
| Melting Point | 204°C |
| Molecular Formula | C3H5N3O |
| Molecular Weight | 99.091 |
| Flash Point | 243.8±23.2 °C |
| Exact Mass | 99.043259 |
| PSA | 74.67000 |
| LogP | -0.22 |
| Vapour Pressure | 0.0±1.2 mmHg at 25°C |
| Index of Refraction | 1.741 |
| Storage condition | 2-8°C |
| Hazard Codes | Xi |
|---|---|
| HS Code | 2933199090 |
|
~%
28491-52-3 |
| Literature: Graham et al. Journal of the American Chemical Society, 1949 , vol. 71, p. 983,987 |
|
~%
28491-52-3 |
| Literature: Graham et al. Journal of the American Chemical Society, 1949 , vol. 71, p. 983,987 |
|
~%
28491-52-3 |
| Literature: Hepner; Fajersztejn Bulletin de la Societe Chimique de France, 1937 , vol. <5>4, p. 854,858 |
|
~%
28491-52-3 |
| Literature: Ishimaru Yakugaku Zasshi, 1957 , vol. 77, p. 800 Chem.Abstr., 1957 , p. 17893 |
| Precursor 4 | |
|---|---|
| DownStream 4 | |
![3H-Pyrazolo[3,4-b]pyridin-3-one,1,2-dihydro-4,6-dimethyl- structure](https://image.chemsrc.com/caspic/343/28491-67-0.png)
![Pyrazolo[1,5-a]pyrimidin-2(1H)-one,5,7-dimethyl- structure](https://image.chemsrc.com/caspic/443/26911-66-0.png)
| HS Code | 2933199090 |
|---|---|
| Summary | 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |