SPL Set ID: b2b3be70-17d8-4093-896c-f1c54a2cf242
1 drug(s) with this SPL Set ID
NETSPOT is supplied as a sterile, multiple-dose kit for preparation of gallium Ga 68 dotatate injection for intravenous use. Dotatate, also known as DOTA-0-Tyr3-Octreotate, is a cyclic 8 amino acid peptide with a covalently bound chelator (dota). The peptide has the amino acid sequence: H-D-Phe-Cys-Tyr-D-Trp-Lys-Thr-Cys-Thr-OH, and contains one disulfide bond. Dotatate has a molecular weight of 1435.6 Daltons and its chemical structure is shown in Figure 3. Figure 3. Chemical Structure of Dotatate [(4,7,10-Tricarboxymethyl-1,4,7,10-tetrazacyclododec-1-yl)acetyl]-(D)-Phenylalanyl-(L)Cysteinyl-(L)-Tyrosyl-(D)-Tryptophanyl-(L)-Lysyl-(L)-Threoninyl-(L)-Cysteinyl-(L)-Threonine-cyclic(2-7)disulfide NETSPOT is a kit with the following components: Vial 1 (reaction vial with lyophilized powder) contains: 40 mcg dotatate, 5 mcg 1,10-phenanthroline; 6 mcg gentisic acid; 20 mg mannitol. Vial 2 (buffer vial) contains: 60 mg formic acid; 56.5 mg sodium hydroxide and water for injection. After radiolabeling, [see Dosage and Administration ( 2.3 )] , gallium Ga 68 dotatate injection also contains hydrochloric acid as an excipient derived from the generator eluate. The prepared gallium Ga 68 dotatate injection for intravenous use, is a sterile, pyrogen free, clear, colorless, buffered solution, with a pH between 3.2 and 3.8. Table 5, Table 6, and Table 7 display the principal radiation emission data, radiation attenuation by lead shielding, and physical decay of gallium-68. Table 5. Principal Radiation Emission Data (> 1%) Radiation/Emission % Disintegration Mean energy (MeV) beta+ 88% 0.8360 beta+ 1.1% 0.3526 gamma 178% 0.5110 gamma 3% 1.0770 X-ray 2.8% 0.0086 X-ray 1.4% 0.0086 Table 6. Radiation Attenuation of 511 keV Photons by Lead (Pb) Shielding Shield thickness (Pb) mm Coefficient of attenuation 6 0.5 12 0.25 17 0.1 34 0.01 51 0.001 Table 7. Physical Decay Chart for Gallium-68 Minutes Fraction remaining 0 1.000 15 0.858 30 0.736 60 0.541 90 0.398 120 0.293 180 0.158 360 0.025 Figure 3. Chemical Structure of dotatate