| | Chemical Properties | Back Directory |  | [Boiling point ] 
 533.2±50.0 °C(Predicted)
 |  | [density ] 
 1.502±0.06 g/cm3(Predicted)
 |  | [storage temp. ] 
 4°C, protect from light
 |  | [solubility ] 
 DMSO : 62.5 mg/mL (190.13 mM; Need ultrasonic)
 |  | [form ] 
 Solid
 |  | [pka] 
 -8.51±0.29(Predicted)
 |  | [color ] 
 Light yellow to yellow
 | 
 | Hazard Information | Back Directory |  | [Uses] 
 TRi-1 is a potent, specific and irreversible inhibitor of cytosolic thioredoxin reductase 1 (TXNRD1), with an IC50 of 12 nM. TRi-1 has little mitochondrial toxicity for anticancer therapy[1].
 |  | [in vivo] 
 
 TRi-1 (10 mg/kg; i.v.; twice a day for 4 days or 5 mg/kg; i.p.; twice a week for 3 weeks) impaires growth and viability of human tumor xenografts and syngeneic mouse tumors[1]. | Animal Model: | SCID mice bearing established human FaDu cell xenografts[1] |  | Dosage: | 10 mg/kg |  | Administration: | Intravenous injection, twice a day for 4 days |  | Result: | Resulted in decreased tumor growth compared to vehicle controls within four days with no signs of overt toxicity or changes in mouse weight relative to vehicle control. | 
| Animal Model: | PyMT-MMTV mice that spontaneously develop malignant breast cancer tumors[1] |  | Dosage: | 5 mg/kg |  | Administration: | Intraperitoneal injection, twice a week for 3 weeks |  | Result: | Impaired tumor growth, significantly reduced tumor volumes. | 
 |  | [storage] 
 4°C, protect from light
 |  | [References] 
 [1] Stafford WC, et al. Irreversible inhibition of cytosolic thioredoxin reductase 1 as a mechanistic basis for anticancer therapy. Sci Transl Med. 2018 Feb 14;10(428). pii: eaaf7444. DOI:10.1126/scitranslmed.aaf7444
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