- Shanghai Nianxing Industrial Co., Ltd
- China
- Product Name: Schollkopf reagent
- Price: Check
- Purity: 97.0%
- Stocking Period: 10 Day
- Contact: Yang
- Email: sales@echemcloud.com
- Shanghai Jizhi Biochemical Technology Co., Ltd
- China
- Product Name: Schollkopf reagent
- Price: ￥4018.0/5ml ￥928.0/1ml
- Purity: 97.0%
- Stocking Period: Inquiry
- Contact: Liu jia
- Email: 2130147988@qq.com
- Dayang Chem (Hangzhou) Co., Ltd.
- China
- Product Name: (2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine
- Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
- Purity: 98.0%
- Stocking Period: Inquiry
- Contact: Ms Wang
- Email: enquiry@dycnchem.com
78342-42-4
78342-42-4 structure
- Name: Schollkopf reagent
- Chemical Name: (2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine
- CAS Number: 78342-42-4
- Molecular Formula: C9H16N2O2
- Molecular Weight: 184.236
- Catalog: Pharmaceutical intermediate Heterocyclic compound Pyrazines
- Create Date: 2018-12-30 08:47:59
- Modify Date: 2025-08-21 11:07:12
| Name | (2S)-(+)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine |
|---|---|
| Synonyms |
(2R)-2-Isopropyl-3,6-dimethoxy-2,5-dihydropyrazine
(R)-Schollkopf Reagent (2S)-2-Isopropyl-3,6-dimethoxy-2,5-dihydropyrazine (2S)-3,6-dimethoxy-2-(propan-2-yl)-2,5-dihydropyrazine Schollkopf reagent Pyrazine, 2,5-dihydro-3,6-dimethoxy-2-(1-methylethyl)-, (2S)- (R)-(-)-2-Isopropyl-3,6-dimethoxy-2,5-dihydropyrazine Pyrazine, 2,5-dihydro-3,6-dimethoxy-2-(1-methylethyl)-, (2R)- (2S)-3,6-dimethoxy-2-propan-2-yl-2,5-dihydropyrazine (2R)-3,6-dimethoxy-2-(propan-2-yl)-2,5-dihydropyrazine (R)-2,5-Dihydro-3,6-dimethoxy-2-isopropylpyrazine MFCD00066229 |
| Density | 1.1±0.1 g/cm3 |
|---|---|
| Boiling Point | 245.2±33.0 °C at 760 mmHg |
| Molecular Formula | C9H16N2O2 |
| Molecular Weight | 184.236 |
| Flash Point | 85.6±17.9 °C |
| Exact Mass | 184.121185 |
| PSA | 43.18000 |
| LogP | -0.40 |
| Vapour Pressure | 0.0±0.5 mmHg at 25°C |
| Index of Refraction | 1.503 |
| Personal Protective Equipment | Eyeshields;Gloves |
|---|---|
| Hazard Codes | Xn: Harmful; |
| Risk Phrases | R22 |
| Safety Phrases | S23-S24/25-S37/39-S26 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | 3 |
| HS Code | 2933990090 |
|
~80%
78342-42-4 |
| Literature: Schoellkopf, Ulrich; Groth, Ulrich; Deng, Chuanzheng Angewandte Chemie, 1981 , vol. 93, # 9 p. 793 - 795 |
|
~%
78342-42-4 |
| Literature: Tetrahedron Asymmetry, , vol. 9, # 2 p. 321 - 327 |
|
~%
78342-42-4 |
| Literature: Organic Process Research and Development, , vol. 9, # 2 p. 185 - 187 |
|
~%
78342-42-4 |
| Literature: Organic Process Research and Development, , vol. 9, # 2 p. 185 - 187 |
|
~%
78342-42-4 |
| Literature: Angewandte Chemie, , vol. 93, # 9 p. 793 - 795 |
|
~%
78342-42-4 |
| Literature: Tetrahedron Asymmetry, , vol. 9, # 2 p. 321 - 327 |
|
~%
78342-42-4 |
| Literature: Angewandte Chemie, , vol. 93, # 9 p. 793 - 795 |
|
~%
78342-42-4 |
| Literature: Tetrahedron Asymmetry, , vol. 9, # 2 p. 321 - 327 |
| Precursor 9 | |
|---|---|
| DownStream 3 | |
| 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% |