HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 175366Generated: November 1, 2026
2-Ethyl-3-methylthiopyrazine
Pyrazine, 2-ethyl-3-(methylthio)- · 2-(METHYLTHIO)-3-ETH · 3-ETHYL-2-METHYLTHIOPYRAZINE · 2-ETHYL-3-(METHYLTHIO)PYRAZINE · 2-(Methylthio)-3-ethylpyrazine · Pyrazine, 3-ethyl-2-(methylthio) · 2-Ethyl-3-(methylthio)pyrazine>2-Ethyl-3-(methylsulfanyl)pyrazine · 2-METHYLTHIO-3(5/6)-ETHYL PYRAZINE
https://huagongshe.com/en/chemical/175366
Identifiers & Physical Properties
| CAS No. | 72987-62-3 |
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| Molecular formula | C7H10N2S |
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| Average molar mass | 154.24 g/mol |
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| Monoisotopic mass | 154.0564695 g/mol |
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| SMILES | CCc1nccnc1SC |
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| InChIKey | XYHPPOMSLGJAAM-UHFFFAOYSA-N |
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| PubChem CID | 175366 |
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| EC No. | 277-191-4 |
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| DTXSID | DTXSID7072701 |
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Chemical & Physical Properties
| XLogP | 2.2 |
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| Topological polar surface area | 51.1 |
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| Hydrogen bond donors | 0 |
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| Hydrogen bond acceptors | 3 |
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| Rotatable bonds | 2 |
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| Heavy atoms | 10 |
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| Formal charge | 0 |
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| Complexity | 97.6 |
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| Food additives | FLAVORING AGENT OR ADJUVANT -> FDA Substance added to food |
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| Density | 1.142-1.145 (20 °C)1.11 |
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| Solubility | Practically insoluble to insoluble in waterSoluble (in ethanol) |
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| Boiling point | 234-236 °C234.8±40.0 °C(Predicted) |
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| Refractive index | 1.568-1.5831.5700-1.5740 |
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| Physical Description | Clear light yellow liquidStrong roasted meat aroma |
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| FEMA | 4631 | 2-ETHYL-3-METHYLTHIOPYRAZINE |
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| Flash point | 99℃ |
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| pKa (acidity coefficient) | 0.80±0.10(Predicted) |
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| Odor | at 0.10 % in propylene glycol. strong roasted or cooked meat |
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| Odor type | meaty |
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| JECFA Number | 2132 |
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| LogP (partition coefficient) | 2.25 |
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| CAS DataBase Reference | 72987-62-3(CAS DataBase Reference) |
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| Substances Added to Food (formerly EAFUS) | 2-ETHYL-3-METHYLTHIOPYRAZINE |
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| FDA UNII | D7F04498AY |
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| EPA Substance Registry System | Pyrazine, 2-ethyl-3-(methylthio)- (72987-62-3) |
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| GHS pictogram | GHS05,GHS07 |
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| Signal word | Danger |
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| GHS hazard statements | H315-H318-H335 |
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| GHS precautionary statements | P261-P280-P305+P351+P338 |
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| Hazard symbols | Xi |
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| Risk statements (R) | 37/38-41 |
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| Safety statements (S) | 26-39 |
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| Water hazard class (WGK) | 3 |
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| TSCA inventory status | TSCA listed |
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| Customs code | 2930.90.2900 |
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Safety & Regulations
| GHS classification | DangerH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P354+P338, P317, P319, P321, P332+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 39 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
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| Regulatory information | Chemical: Pyrazine, 2-ethyl-3-(methylthio)-Pyrazine, 2-ethyl-3-(methylthio)-: Does not have an individual approval but may be used under an appropriate group standard |
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| Hazard Classes and Categories | Skin Irrit. 2 (100%) |
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| Water hazard class (WGK) | 3 |
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| TSCA inventory status | TSCA listed |
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| Customs code | 2930.90.2900 |
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| Risk statements (R) | 37/38-41 |
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| Signal word | Danger |
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| GHS pictogram | GHS05,GHS07 |
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| Hazard symbols | Xi |
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| Safety statements (S) | 26-39 |
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| GHS hazard statements | H315-H318-H335 |
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| GHS precautionary statements | P261-P280-P305+P351+P338 |
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