Ricinine is a toxic alkaloid found in the castor plant.[2] It can serve as a biomarker of ricin poisoning.[3][4] It was first isolated from the castor seeds by Tuson in 1864.[5][6]
Names | |
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Preferred IUPAC name
4-Methoxy-1-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile | |
Other names
3-cyano-4-methoxy-N-methyl-2-pyridone
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Identifiers | |
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3D model (JSmol)
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3DMet |
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ChEBI |
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ChEMBL |
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ChemSpider |
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ECHA InfoCard | 100.007.601 |
EC Number |
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KEGG |
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PubChem CID
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UNII |
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CompTox Dashboard (EPA)
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Properties | |
C8H8N2O2 | |
Molar mass | 164.164 g·mol−1 |
Melting point | 200 °C (392 °F; 473 K) |
Hazards | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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340 mg/kg[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Ricinine has insecticidal effects.[7]
It sublimes between 170 and 180 °C at 20 mmHg. It does not form salts, and is precipitated in iodine or mercuric chloride solutions, but not in Mayer's reagent.[5]
It can be hydrolyzed to methanol and ricininic acid by alkali.[5]