FAPI-4 is a potent fibroblast activation protein ( FAP ) inhibitor for the targeting FAP. FAPI-4 can be used in cancer research. 68 Ga-FAPI-4 PET/CT is a promising new diagnostic method for imaging various kinds of cancer , with good tumor-to-background contrast ratios In Vivo FAPI-4 (Intravenous injection; 30 nmol per mouse; once) shows excellent tumor uptake in BALB/c nu / nu mice. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Animal Model: 8-week-old BALB/c nu / nu mice inoculated with HT-1080-FAP cellsDosage: 30 nmol per mouse Administration: Intravenous injection; 30 nmol per mouse; once Result: Revealed the high overall tumor uptake (9.44%ID/g 4 h after injection). Form:Solid IC50& Target:Fibroblast activation protein (FAP)