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EC number: 297-629-8 | CAS number: 93685-81-5
MRD-89-582 was examined for its potential to induce chromosomal damage in bone marrow erythrocytes in mice dosed by oral gavage at concentrations of 5.0,2.5, and 1.25 g/kg. Vehicle and positive control animals received corn oil and cyclophosphamide, respectively. Bone marrow samples were collected and evaluated for micronucleus formation 24, 48 and 72 hours after dosing. MRD-89-582 did not induce a statistically significant change in the PCE/NCE ratio in any of the test material dose groups when compared to their concurrent vehicle control groups. The positive control material (cyclophosphamide) produced a marked increase in the frequency of micronucleated PCE when compared to the concurrent vehicle control group The test material was considered to be non-genotoxic and non-clastogenic under the conditions of the test. This finding does not warrant the classification of the test material as a genotoxin under EU GHS guidelines and does not warrant classification under the EU requirements for dangerous substances and preparations guidelines.
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