PSMA-11 free base

• CAS: 1366302-52-4
• Catalog Number: ACM1366302524
• Category: Others
• Molecular Weight: 947.01
• Molecular Formula: C44H62N6O17
• Description: PSMA-11, also known as DKFZ-​PSMA-​11, HBED-CC-PSMA or Psma-hbed-CC, is a ligand to make gallium Ga 68-labeled PSMA-11, which has potential use as a tracer for PSMA-expressing tumors during positron emission tomography (PET). Upon intravenous administration of gallium Ga 68-labeled PSMA-11, the Glu-urea-Lys(Ahx) moiety targets and binds to PSMA-expressing tumor cells. Upon internalization, PSMA-expressing tumor cells can be detected during PET imaging. PSMA, a tumor-associated antigen and type II transmembrane protein, is expressed on the membrane of prostatic epithelial cells and overexpressed on prostate tumor cells
• Synonyms: DKFZ-​PSMA-​11; Psma-hbed-CC; PSMA-11; PSMA11; PSMA 11; HBED-CC-PSMA; PSMA-11 TFA; Psma-hbed-CC
• IUPAC Name: (3S,7S)-22-(3-(((2-((5-(2-Carboxyethyl)-2-hydroxybenzyl)(carboxymethyl)amino)ethyl)(carboxymethyl)amino)methyl)-4-hydroxyphenyl)-5,13,20-trioxo-4,6,12,19-tetraazadocosane-1,3,7-tricarboxylic acid
• Canonical SMILES: O=C(O)CC[C@H](NC(N[C@@H](CCCCNC(CCCCCNC(CCC1=CC=C(O)C(CN(CC(O)=O)CCN(CC2=CC(CCC(O)=O)=CC=C2O)CC(O)=O)=C1)=O)=O)C(O)=O)=O)C(O)=O
• InChI: InChI=1S/C44H62N6O17/c51-34-13-8-28(22-30(34)24-49(26-40(59)60)20-21-50(27-41(61)62)25-31-23-29(9-14-35(31)52)11-16-38(55)56)10-15-37(54)46-18-4-1-2-7-36(53)45-19-5-3-6-32(42(63)64)47-44(67)48-33(43(65)66)12-17-39(57)58/h8-9,13-14,22-23,32-33,51-52H,1-7,10-12,15-21,24-27H2,(H,45,53)(H,46,54)(H,55,56)(H,57,58)(H,59,60)(H,61,62)(H,63,64)(H,65,66)(H2,47,48,67)/t32-,33-/m0/s1
• InChI Key: QJUIUFGOTBRHKP-LQJZCPKCSA-N
• Solubility: To be determined
• Appearance: Solid powder
• Shelf Life: >2 years if stored properly
• Storage: Dry, dark and at 0-4 °C for short term (days to weeks) or -20 °C for long term (months to years).
• Alternative CAS: 2412149-32-5 (TFA); 1366302-52-4 (free base)
• Biological Target: Ga 68 PSMA-11 binds to prostate-specific membrane antigen (PSMA). It binds to cells that express PSMA, including malignant prostate cancer cells, which usually overexpress PSMA. Gallium-68 (Ga 68) is a β+ emitting radionuclide that allows positron emission tomography (PET).
• Drug Formulation: To be determined
• Elemental Analysis: C, 55.81; H, 6.60; N, 8.87; O, 28.72
• Exact Mass: 946.4171
• HS Tariff Code: 2934.99.9001
• In Vitro Activity: The procedure was completely automated and provided a high radiochemical yield. It can be performed several times a day, facilitating the clinical demand of this radiopharmaceutical.; Reference: Reverchon J, Khayi F, Roger M, Moreau A, Kryza D. Optimization of the radiosynthesis of [68Ga]Ga-PSMA-11 using a Trasis MiniAiO synthesizer: do we need to heat and purify? Nucl Med Commun. 2020 Sep;41(9):977-985. doi: 10.1097/MNM.0000000000001233. PMID: 32796487.
• In Vivo Activity: A total of 635 men were enrolled with a median age of 69 years (range, 44-95 years). On a per-patient basis, PPV was 0.84 (95% CI, 0.75-0.90) by histopathologic validation (primary endpoint, n = 87) and 0.92 (95% CI, 0.88-0.95) by the composite reference standard (n = 217). 68Ga-PSMA-11 PET localized recurrent prostate cancer in 475 of 635 (75%) patients; detection rates significantly increased with prostate-specific antigen (PSA): 38% for <0.5 ng/mL (n = 136), 57% for 0.5 to <1.0 ng/mL (n = 79), 84% for 1.0 to <2.0 ng/mL (n = 89), 86% for 2.0 to <5.0 ng/mL (n = 158), and 97% for ≥5.0 ng/mL (n = 173, P < .001). Interreader reproducibility was substantial (Fleiss κ, 0.65-0.78). There were no serious adverse events associated with 68Ga-PSMA-11 administration. PET-directed focal therapy alone led to a PSA drop of 50% or more in 31 of 39 (80%) patients.Using blinded reads and independent lesion validation, high PPV for 68Ga-PSMA-11 PET, detection rate and interreader agreement for localization of recurrent prostate cancer.; Reference: Fendler WP, Calais J, Eiber M, Flavell RR, Mishoe A, Feng FY, Nguyen HG, Reiter RE, Rettig MB, Okamoto S, Emmett L, Zacho HD, Ilhan H, Wetter A, Rischpler C, Schoder H, Burger IA, Gartmann J, Smith R, Small EJ, Slavik R, Carroll PR, Herrmann K, Czernin J, Hope TA. Assessment of 68Ga-PSMA-11 PET Accuracy in Localizing Recurrent Prostate Cancer: A Prospective Single-Arm Clinical Trial. JAMA Oncol. 2019 Jun 1;5(6):856-863. doi: 10.1001/jamaoncol.2019.0096. PMID: 30920593; PMCID: PMC6567829.
• Shipping: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
• Stock Solution Storage: 0-4 °C for short term (days to weeks), or -20 °C for long term (months).