1H-pyrazine-2-thione
2-Mercaptopyrazine
CAS: 38521-06-1
Molecular Formula: C4H4N2S
1H-pyrazine-2-thione - Names and Identifiers
| Name | 2-Mercaptopyrazine |
| Synonyms | 2-pyrazinethiol mercaptopyrazine Pyrazine-2-thiol 2-Mercaptopyrazine 2(1H)-pyrazinethione 2(1H)-Pyrazinethione 1H-pyrazine-2-thione Pyrazine-2(1H)-thione pyrazine-2(1H)-thione |
| CAS | 38521-06-1 |
| InChI | InChI=1/C4H4N2S/c7-4-3-5-1-2-6-4/h1-3H,(H,6,7) |
1H-pyrazine-2-thione - Physico-chemical Properties
| Molecular Formula | C4H4N2S |
| Molar Mass | 112.15 |
| Density | 1.30±0.1 g/cm3(Predicted) |
| Melting Point | 207-213°C |
| Boling Point | 191.3±23.0 °C(Predicted) |
| Flash Point | 69.5°C |
| Vapor Presure | 0.519mmHg at 25°C |
| Appearance | powder to crystal |
| Color | Light yellow to Brown |
| pKa | 8.44±0.20(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | 1.662 |
1H-pyrazine-2-thione - Risk and Safety
| WGK Germany | 3 |
1H-pyrazine-2-thione - Introduction
2-Mercaptopyrazine is an organic compound with the chemical formula C4H4N2S. It is a white crystalline solid with a pungent odor. The following is a description of the nature, use, preparation and safety information of 2-Mercaptopyrazine:
Nature:
-Appearance: White crystalline solid
-Molecular weight: 112.16g/mol
-melting point: 80-82 ℃
-Boiling point: about 260 ℃ (decomposition)
-Soluble: Soluble in acid, alkali, ethanol and ether, slightly soluble in water.
Use:
- 2-Mercaptopyrazine can be used as an important intermediate in organic synthesis and can play an important role in the synthesis of drugs and pesticides.
-It can be used to prepare pyrazine dyes, pharmaceutical intermediates and coordination compounds.
Preparation Method:
2-Mercaptopyrazine can be synthesized:
1. Reaction of 2-bromopyrazine with sodium hydrogen sulfate in water/ethanol to give 2-Mercaptopyrazine. The reaction conditions are generally such that the reaction is stirred at room temperature.
2. 2-Mercaptopyrazine can also be obtained by reacting 2-chloropyrazine with thiol under alkaline conditions.
Safety Information:
- 2-Mercaptopyrazine is an irritant compound that may cause irritation in contact with the skin, eyes or by inhalation of its dust.
-Wear personal protective equipment such as chemical protective gloves, safety glasses and protective masks when handling 2-Mercaptopyrazine.
-When using this compound, please make sure to operate in a well-ventilated place to avoid inhaling its dust.
-Avoid contact with oxidants and strong acids to prevent dangerous reactions.
-Store 2-Mercaptopyrazine in an airtight container, away from heat and fire sources.
Nature:
-Appearance: White crystalline solid
-Molecular weight: 112.16g/mol
-melting point: 80-82 ℃
-Boiling point: about 260 ℃ (decomposition)
-Soluble: Soluble in acid, alkali, ethanol and ether, slightly soluble in water.
Use:
- 2-Mercaptopyrazine can be used as an important intermediate in organic synthesis and can play an important role in the synthesis of drugs and pesticides.
-It can be used to prepare pyrazine dyes, pharmaceutical intermediates and coordination compounds.
Preparation Method:
2-Mercaptopyrazine can be synthesized:
1. Reaction of 2-bromopyrazine with sodium hydrogen sulfate in water/ethanol to give 2-Mercaptopyrazine. The reaction conditions are generally such that the reaction is stirred at room temperature.
2. 2-Mercaptopyrazine can also be obtained by reacting 2-chloropyrazine with thiol under alkaline conditions.
Safety Information:
- 2-Mercaptopyrazine is an irritant compound that may cause irritation in contact with the skin, eyes or by inhalation of its dust.
-Wear personal protective equipment such as chemical protective gloves, safety glasses and protective masks when handling 2-Mercaptopyrazine.
-When using this compound, please make sure to operate in a well-ventilated place to avoid inhaling its dust.
-Avoid contact with oxidants and strong acids to prevent dangerous reactions.
-Store 2-Mercaptopyrazine in an airtight container, away from heat and fire sources.
Last Update：2024-04-09 02:00:45
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