[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][C][C][O][Ring1][Ring1]"}, {"from": "gpt", "value": "The molecule is primarily used as a stabilizer in chlorinated hydrocarbon solvents. No information is available on the acute (short-term), chronic (long-term), reproductive, developmental, or carcinogenic effects of 1,2-epoxybutane in humans. Irritation and inflammation of the nasal passageways, lungs, and skin have been observed in animal studies following acute inhalation and dermal exposures. Chronic inhalation exposure of rats and mice to 1,2-epoxybutane causes degenerative lesions of the nasal cavity. In a National Toxicology Program (NTP) study, tumors of the nasal cavity and alveolar/bronchial tumors were produced in rats, while no tumors were observed in mice. The International Agency for Research on Cancer (IARC) has classified 1,2-epoxybutane as a Group 2B, possibly carcinogenic to humans."}]