,
,
, Tb): Ac-Gly-Lys-Pro-Glu(Cs124)-Glu-Cys-Thr-Lys-Ser-Ala-Cys
,
, Eu): Ac-Gly-Lys-Pro-Glu(Cs124)-Glu-Cys-Thr-Lys-Ser-Ala-Cys
, Tb): Ac-Gly-Lys-Pro-Glu(Cs124)-Glu-Cys-Thr-Lys-Ser-Ala-Cys
, Eu): Ac-Gly-Lys-Pro-Glu(Cs124)-Glu-Cys-Thr-Lys-Ser-Ala-Cys
, Yb): Ac-Gly-Lys-Pro-Dap(Anthra)-Glu-Cys-Thr-Lys-Ser-Ala-Cys
, Ac-Gly-Lys-Pro-Dap(Cs124)-Glu-Cys-Thr-Lys-Ser-Ala-Cys
, SP3-CoumCF 3 -LysDOTA(Eu): Ac-Gly-Lys-Pro-Glu(CoumCF 3 )-Glu-Cys-Thr-Lys-Ser-Ala
, SP3-Cs124CF 3 -LysDOTA(Eu): Ac-Lys-Pro-Glu(Cs124CF 3 )-Glu-Cys-Thr-Lys-Ser-Ala
, Eu): Ac-Gly-Lys-Pro-Glu(Cs124)-Glu-Cys-Thr-Lys-Ser-Ala
, Eu): Ac-Lys-Pro-Dap(Acri)-Glu-Cys-Thr-Lys-Ser-Ala-Cys-Gly
, Glu-Cys(StBu)-Thr-Lys-Ser-Ala-SEAoff F1R(Tb)-Cs124-SEA: DOTA[Tb]-Gly-Lys-Pro-Glu(Cs124)-Glu-Cys(StBu)-Thr-Lys-SerAla-SEA-off F1R(Eu)-Cs124-SEA: DOTA[Eu]-Gly-Lys-Pro-Glu(Cs124)-Glu-Cys(StBu)-Thr-Lys-SerAla-SEA-off Pen-Cs124-SEA: 1-(Gly-Gly-Gly-Lys-Pro-Glu(Cs124)-Glu-Cys(StBu)-Thr-Lys-Ser-Ala
, SEA-off)-4
, Glu-Cys(StBu)-Thr-Lys-Ser-Ala-SEA-off)-4-((CH 2 )-CO-Arg-Arg-Arg-Arg-Trp-Trp-Trp-Trp-Arg-Arg-Arg-Arg-NH 2 )-1H
, Glu-Cys(StBu)-Thr-Lys-Ser-Ala-SEAoff)-4-((CH 2 )-CO-Gly-Arg-Lys-Lys-Arg-Arg-Gln-Arg-Arg-Arg-Pro-Pro-Gln-NH 2 )-1H
, StBu)-Thr-Lys-Ser-Ala-SEAoff)-4, issue.2
, StBu)-Thr-Lys-Ser-Ala-SEA-off)-4, issue.2
, Glu-Cys-Thr-Lys, p.1
,
, Glu-Cys-Thr-Lys, p.1
,
, Glu-Cys-Thr-Lys, p.1
,
, Glu-Cys-Thr-Lys, p.1
,
, , p.1
, Glu-Cys-Thr-Lys, p.1
,
, Glu-Cys-Thr-Lys, p.1
,
,
, Glu-Cys-Thr, p.1
, Pro-Dap(Acri)-Glu-Cys-Thr-Lys-Ser-Ala-Cys-Gly-Lys
, Coum)-Glu-Cys-Thr, p.1
, centrifuged, dissolved in deionized water, lyophilized and purified by HPLC to give Cys-F2-DapDOTA (29.0 mg, 11% yield, 0.1 mmol scale). HPLC (anal.) t R = 5
,
Compound Cys-F2-DapDOTA (1.5 µmol, 4 mg) was dissolved in H 2 O and the pH was adjusted to 6.5 using NaOH. Then, the lanthanide salt LnCl 3 (12 µmol) was added. The solution was stirred overnight under argon (after 1h, the pH was controlled and adjusted to 6.2 if needed). TCEP (35 µmol, 10 mg) was added prior to removal of excess Ln 3+ by HPLC purification, Formation of Ln 3+ complexes of C-terminal segment Cys-F2-DapDOTA(Ln ,
Tb): HPLC (anal.) t R = 5.2 min (method A) ,
, (5+), 467.6 (6+) / calculated av, ESI-MS: average m/z = 1400.3 (2+), 933.9 (3+), 700.7 (4+), vol.560
, 5+ , 467.49 [M+6H] 6+ for M = C 113 H 185 N 36 O 35 STb)
HPLC (anal.) t R = 5.2 min (method A) ,
, ESI-MS: average m/z = 1396.8 (2+), 931.7 (3+), 699.1 (4+), 559.5 (5+), p.39
HPLC (anal.) t R = 5.2 min (method A) ,
, (6+) / calculated av, ESI-MS: average m/z = 1392.5 (2+), 928.8 (3+), 696.9 (4+), 557.8 (5+), vol.465
,
, was dissolved in a small amount of DMF and added to the resin, then a solution of
, 4 eq) in DMF (2 mL) was added. Removal of the Allyl protecting group of the DOTA-pic tris(allyl) was performed using with Pd(PPh 3 ) 4 (0.05 mmol, 0.5 eq., 58 mg) and phenylsilane (5 mmol, 50 eq., 0.6 mL) in degassed anhydrous DCM (10 mL) for 1h in the dark. The resin was then washed successively with DCM (2×2 min), DMF (2×2 min), 1% H 2 O in DMF
The resin was dried. Removal of acid-labile side chain protecting groups and cleavage were performed using TFA/H 2 O/TIS/ DTT (9, p.25 ,
, 150 mL), centrifuged, dissolved in deionized water, lyophilized and purified by HPLC to give Cys-F2-LysDOTA-pic
, HPLC (anal.) t R = 5.7 min (method A)
, 4 (5+), 461.4 (6+) / calculated av. m/z = 921, ESI-MS: average m/z = 921.7 (3+), 691.6 (4+), vol.553
, C 121 H 197 N 37 O 35 S)
, Formation of Ln 3+ complexes of C-terminal segment Cys-F2-LysDO3A-pic
, Then, the lanthanide salt LnCl 3 (12 µmol) was added. The solution was stirred overnight under argon (after 1h, the pH was controlled and adjusted to 6.2 if needed). TCEP (35 µmol, 10 mg) was added prior to removal of excess Ln 3+ by HPLC purification, Compound Cys-F2-LysDO3A-pic (1.5 µmol, 4 mg) was dissolved in H 2 O and the pH was adjusted to 6.5 using NaOH
, HPLC (anal.) t R = 6.1 min (method A)
, , p.37
NaOH (2 N). Peptides F1-Cs124-SEA (0.7 µmol, 1 mg) and Cys-F2-DapDOTA(Ln) (0.8 µmol, 2.1 mg, 1.1 eq.) were dissolved in the TCEP/MPAA solution (197 µL, final peptide concentration 3.5 mM, pH 6.5). The native chemical ligation was performed at 37°C and monitored by RP-HPLC. At the end, the reaction mixture was C 170 H 270 N 50 O 52 S 2 Tb, MPAA solution was prepared by dissolving TCEP (28.7 mg, 0.1 mmol) and MPAA aq ,
Isolated yield = 16% ,
, HPLC (anal.) t R = 7.1 min (method A)
, 3 (6+), 581.6 (6+), 509.0 (7+) / calculated av, ESI-MS: average m/z = 1016.8 (4+), 813.8 (5+), vol.678
NaOH (2 N). Peptides F1(Anthra)-SEA (0.56 µmol, 0.8 mg) and Cys-F2-LysDOTA(Ln) (0.62 µmol, 1.7 mg, 1.1 eq.) were dissolved in the TCEP/MPAA solution (170 µL, final peptide concentration 3.5 mM, pH 6.5). The native chemical ligation was performed at 37°C and monitored by RP-HPLC. At the end, the reaction mixture was diluted with water-TFA 5% (2 mL), MPAA was extracted by diethyl ether, MPAA solution was prepared by dissolving TCEP (28.7 mg, 0.1 mmol) and MPAA aq ,
, Isolated yield = 51%
, HPLC (anal.) t R = 8.9 min (method A)
3 (5+), 670.5 (6+), vol.804 ,
, Isolated yield = 50%
, HPLC (anal.) t R = 8.8 min (method A)
(5+), 675.4 (6+), 579.1 (7+) / calculated av. m/z = 810, vol.810, p.30 ,
,
NaOH (2 N). Peptides F1-Cs124CF 3 -SEA (0.7 µmol, 1 mg) and SP3-Cs124-LysDOTA(Eu) (0.8 µmol, 2.2 mg, 1.1 eq.) were dissolved in the TCEP/MPAA solution (197 µL, final peptide concentration 3.5 mM, pH 6.5). The native chemical ligation was performed at 37°C and monitored by RP-HPLC. At the end, the reaction mixture was diluted with water-TFA 5% (2 mL), MPAA was extracted by diethyl ether, MPAA solution was prepared by dissolving TCEP (28.7 mg, 0.1 mmol) and MPAA aq ,
Isolated yield = 15% ,
, HPLC (anal.) t R = 8.0 min (method A)
, 1 (6+) / calculated av. m/z = 1015, ESI-MS: average m/z = 1015.9 (4+), 813.0 (5+), 677.8 (6+), vol.581
,
NaOH (2 N). Peptides F1-Cs124CF 3 -SEA (0.5 µmol, 1 mg) and SP3-Cs124-LysDOTA(Eu) (0.6 µmol, 1.5 mg, 1.1 eq.) were dissolved in the TCEP/MPAA solution (156 µL, final peptide concentration 3.5 mM, pH 6.5). The native chemical ligation was performed at 37°C and monitored by RP-HPLC. At the end, the reaction mixture was diluted with water-TFA 5% (2 mL), MPAA was extracted by diethyl ether, MPAA solution was prepared by dissolving TCEP (28.7 mg, 0.1 mmol) and MPAA aq ,
Isolated yield = 31% ,
, HPLC (anal.) t R = 8.9 min (method A)
, 4 (6+) / calculated av. m/z = 1030, ESI-MS: average m/z = 1030.5 (4+), 824.7 (5+), 687.4 (6+), vol.589
, SP3-Cs124-LysDO3A-pic
NaOH (2 N). Peptides F1-Cs124-SEA (0.6 µmol, 0.9 mg) and Cys-F2-LysDO3A-pic(Eu) (0.7 µmol, 2 mg, 1.1 eq.) were dissolved in the TCEP/MPAA solution (177 µL, final peptide concentration 3.5 mM, pH 6.5). The native chemical ligation was performed at 37°C and monitored by RP-HPLC, MPAA solution was prepared by dissolving TCEP (28.7 mg, 0.1 mmol) and MPAA aq ,
, SP3-Cs124-LysDOTA-pic(Eu): Isolated yield = 22%
, HPLC (anal.) t R = 9.2 min (method A)
, 1 (5+), 691.2 (6+), 592.6 (7+) / calculated av. m/z = 1036, ESI-MS: average m/z = 1036.1 (4+), vol.829
,
MPAA solution was prepared by dissolving TCEP (28.7 mg, 0.1 mmol) and MPAA aq. NaOH (2 N). Peptides F1-Acri-SEA (0.4 µmol ,
, µmol, 1.3 mg, 1.1 eq.) were dissolved in the TCEP/MPAA solution (115 µL, final peptide concentration 3.5 mM, pH 6.5). The native chemical ligation was performed at 37°C and monitored by RP-HPLC. At the end, the reaction mixture was diluted with water-TFA 5% (2 mL), MPAA was extracted by diethyl ether
, SP3-Acri-LysDO3A-pic(Eu): Isolated yield = 41%
, HPLC (anal.) t R = 9.0 min (method A)
, 7 (6+), 589.6 (7+) / calculated av. m/z = 1030, ESI-MS: average m/z = 1030.8 (4+), vol.824
, Ratiomectric probe (SP3R)
, 16 mmol/g) after attachment of the first amino acid by double manual coupling (30 min) using 10-fold excess of Fmoc-Ala-OH, 9.5-fold excess of HATU and 10-fold excess of DIEA in DMF with pre-activation (5 min) followed by acetylation using (Ac 2 O/DIEA/DCM 2:1:17 by vol., 10 mL, 2×5 min). Nonstandard Fmoc-Glu(Cs124)-OH and Fmoc-Cys(StBu)-OH amino acid were used to introduce the antenna and the cysteine residue. Contrary to F1-Cs124-SEA the N-term glycine was coupled with commercial DOTA-tris(tBu)ester (3 eq, 3 eq PyBOP, 6 eq DIEA), SEA-off N-terminal segment F1R-Cs124-SEA: Peptide elongation was performed as described above on SEA-PS resin (0.025 mmol
, 100 mL), dissolved in deionized water, and lyophilized. The peptide was dissolved in H 2 O/AcOH and treated with a solution of I 2 (200 mM in DMSO) to oxidize the C-terminal SEA-on group into SEA-off group. After 30 s, DTT (65 mM in water, 500 ?l) was added to quench the excess of iodine. The oxidized peptide was immediately purified by HPLC, The peptide was then precipitated in ice-cold Et 2 O/heptane (1:1 by
, HPLC (anal.) t R = 10.3 min (method A)
2+), 599.8 (3+) / calculated monoisotopic m/z = 898, monoisotopic m/z =, vol.898, p.90 ,
, Eu): Compound F1R(Ln)(Cs124)-SEA (2.6 µmol, 5 mg) was dissolved in H 2 O and the pH reaction mixture was diluted with water-TFA 5% (2 mL), MPAA was extracted by diethyl ether, Formation of Ln 3+ complexes of N-terminal segment F1R(Ln 2 )-Cs124-SEA (Ln = Tb
,
, HPLC (anal.) t R = 9.9 min (method A)
,
,
, HPLC (anal.) t R = 9.5 min (method A)
, (6+), 648.3 (7+), 567.5 (8+) / calculated av. m/z = 1133, ESI-MS: average m/z = 907.2 (5+), vol.756
, 1 mmol, 0.16 mmol/g) after attachment of the first amino acid by double manual coupling (30 min) using 10-fold excess of Fmoc-Ala-OH, 9.5-fold excess of HATU and 10-fold excess of DIEA in DMF with pre-activation (5 min) followed by acetylation using (Ac 2 O/DIEA/DCM 2:1:17 by vol., 10 mL, 2×5 min). Non-standard FmocCys(StBu)-OH, Fmoc-Glu(Cs124)-OH amino acid and 2-Azidoacetic acid were used to introduce the cysteine residue, the antenna and the azide function, CPP-containing probes SEA-off N-terminal segment F1-N 3 -Cs124-SEA: Peptide elongation was performed as described above on SEA-PS resin
, 10 mL) during 2 h. The peptide was then precipitated in ice-cold Et 2 O/heptane (1:1 by vol., 100 mL), dissolved in deionized water, and lyophilized. The peptide (5.8 µmol, 10 mg) was dissolved in phosphate buffer (1 mg.ml -1 ) and treated with a solution of diamide (29 µmol, 5 eq, 5 mg) to oxidize the C-terminal SEA-on group into SEA-off group
, HPLC (anal.) t R = 10.,5 min (method A)
, monoisotopic m/z = 804.4 (2+), 536.8 (3+) / calculated monoisotopic m/z =, vol.804, p.33
, SEA: Peptide elongation was performed as described above on SEA-PS resin (0.1 mmol, 0.16 mmol/g) after attachment of the first amino acid by double manual coupling (30 min) using 10-fold excess of Fmoc-Ala-OH, 9.5-fold excess of HATU and 10-fold excess of DIEA in DMF with pre-activation (5 min) followed by (1:1 by vol., 150 mL), centrifuged, SEA-off N-terminal segment F1-N 3 -Acri
8 µmol, 33 mg, 12% yield, 0.1 mmol scale) ,
, HPLC (anal.) t R = 4.3 min (method A)
, ESI-MS: average m/z = 1187.4 (2+), vol.751
,
, HPLC (anal.) t R = 9.9 min (method A)
3 (3+), 611.0 (4+), 489.1 (5+) / calculated av, vol.814 ,
µmol, 15.5 mg, 5% yield, 0.1 mmol scale). HPLC (anal ,
, , vol.386, p.6
The peptide ligation was performed with F3-Pen (1.36 µmol, 4.4 mg) and F1-N 3 -Cs124-SEA (1.36 µmol, 2.2 mg) to give Pen-Cs124-SEA ,
, Yield : 30 % t R = 10.7 min (method A)
, ESI-MS: average m/z = 1012.8 (4+), 810.5 (5+), 675.7 (6+) / calculated av
The peptide ligation was performed with F3-Pen (1.22 µmol, 2.7 mg) and F1-N 3 -Acri-SEA (1.22 µmol, 2 mg) to give RWR-Acri-SEA ,
, Yield : 40% t R = 11.0 min (method A)
, 3 (6+), 699.3 (6+), 680.3 (6+), ESI-MS: average m/z = 816.3 (5+), vol.718
The peptide ligation was performed with F3-C4 (1.25 µmol, 0.6 mg) and F1-N 3 -Acri-SEA (1.22 µmol, 2 mg) to give ,
,
The peptide ligation was performed with F3-Tat (1.21 µmol, 2.3 mg) and F1-N 3 -Coum-SEA (1.21 µmol, 2 mg) Tat-Coum-SEA ,
, Yield : 53% t R = 11.2 min (method A)
, ESI-MS: average m/z = 920.2 (4+), 781.8 (5+), 759.1 (5+), 632.7 (6+), 613.8 (10+), vol.595
MPAA solution was prepared by dissolving TCEP (28.7 mg, 0.1 mmol) and MPAA aq. NaOH (2 N), Peptides CPP-Cs124-SEA and SP3-Cs124 ,
, LysDOTA(Ln) (1.1 eq.) were dissolved in the TCEP/MPAA solution (final peptide concentration 3.5 mM, pH 6.5). The native chemical ligation was performed at 37°C and monitored by RP-HPLC, vol.5
, 12+ , 513.73 [M+13H] 13+ for M = C 287 H 455 N 92 O 76 S 3 Tb
,
, The native ligation was performed with Pen-Cs124-SEA (0.34 µmol, 1.5 mg) and Cys-F2
, LysDOTA(Eu) (0.13 µmol, 0.9 mg) to give Pen-SP3-Cs124-LysDOTA(Tb) (0.1 µmol, 0.7 mg)
, Isolated yield = 38%
, HPLC (anal.) t R = 9.1 min (method A)
, (13+) / calculated av. m/z = 1110, ESI-MS: average m/z = 1110.7 (6+), 952.2 (7+), 833.3 (8+), 740.8 (9+), vol.666
,
, The native ligation was performed with RWR-Cs124-SEA (0.25 µmol, 1 mg) and Cys-F2
, LysDOTA(Tb) (0.28 µmol, 0.8 mg) to give RWR-SP3-Cs124-LysDOTA(Tb) (0.06 µmol, 0.4 mg)
, Isolated yield = 23%
, HPLC (anal.) t R = 8.7 min (method A)
, , vol.460
,
, The native ligation was performed with RWR-Cs124-SEA (0.25 µmol, 1 mg) and Cys-F2
, HPLC (anal.) t R = 8.7 min (method A)
, 4 (12+) / calculated av. m/z = 714, ESI-MS: average m/z = 714.7 (9+), 643.3 (10+), 584.8 (11+), vol.536
,
, The native ligation was performed with Tat-Acri-SEA (0.42 µmol, 1.5 mg) and Cys-F2
, LysDO3A-pic(Eu) (0.48 µmol, 1.4 mg) to give Tat-SP3-Acri-LysDO3A
, Isolated yield = 21%
, HPLC (anal.) t R = 7.0 min (method A)
, ESI-MS: average m/z = 809.7 (8+), 719.8 (9+), 694.8 (9+), vol.647
, The native ligation was performed with Pen-Acri-SEA (0.15 µmol, 0.6 mg) and Cys-F2
Eu) (0.17 µmol, 0.5 mg) to give Pen-SP3-Acri-LysDO3A-pic(Eu) (0.04 µmol, 0.27 mg) ,
, Isolated yield = 27%
, HPLC (anal.) t R = 9.3 min (method A)
, , vol.565
,
, The native ligation was performed with RWR-Acri-SEA (0.42 µmol, 1.6 mg) and Cys-F2-LysDO3A-pic(Eu) (0.45 µmol, 1.3 mg) to give RWR-SP3-Acri
, HPLC (anal.) t R = 9.0 min (method A)
, ESI-MS: average m/z = 1015.9 (7+), vol.874
, 12+) / calculated av. m/z = 1016, 11+), 605.6 (11+), vol.615
,
, The native ligation was performed with C4-Acri-SEA (0.52 µmol, 1.1 mg) and Cys-F2
Eu) (0.55 µmol, 1.6 mg) to give C4-SP3-Acri-LysDO3A-pic(Eu) (0.2 µmol, 0.96 mg) ,
, Isolated yield = 38%
, HPLC (anal.) t R = 6.4 min (method B)
, 5 (6+), 686.5 (7+), 600.8 (8+) / calculated av, ESI-MS: average m/z = 1199.9 (4+), 960.8 (5+), vol.800
, The native ligation was performed with Tat-Acri-SEA (0.42 µmol, 1.5 mg) and Cys-F2-LysDO3A-pic(Eu) (0.45 µmol, 1.3 mg, 1.1 eq.) to give Tat-SP3-Coum-LysDO3A-pic
, 72 mg)
, SP3-Cs124-LysDO3A-pic(Eu): Isolated yield = 28%
, HPLC (anal.) t R = 8.0 min (method A)
, ESI-MS: average m/z = 942.6 (7+), 810.7 (8+), 720.7 (9+), 648.7 (10+), vol.637
, 5 (7+), 522.1 (12+) / calculated av. m/z =, vol.569
, Peptide Boc-Cys(Trt)-His(Trt)-Gly-Pro-Ile-Ala-Ala-Lys(Alloc)-Lys(Boc)-Trp
, The first amino acid, Fmoc-Gln(Trt)-OH was attached to the resin by double manual coupling (30 min) using 10-fold excess of Fmoc-Ala-OH, 9.5-fold excess of HATU and 10-fold excess of DIEA in DMF with pre-activation (5 min) followed by acetylation using, Glu(tBu)-Met-Thr(tBu)-Met-Aib-D Pro-Gln(Trt) was assembled on SEA-PS resin (135 µmol, 0.16 mmol/g), vol.10
82 mg) and phenylsilane (3.5 mmol, 25 eq., 0.44 mL) in degassed anhydrous DCM (15 mL) for 1h in the dark. The resin was then washed successively with DCM (2×2 min), DMF (2×2 min), 1% H 2 O in DMF (2×2 min), DMF (2×2 min), 1% DIEA in DMF (2×2 min), DMF (2×2 min), sodium diethyldithiocarbamate in DMF (0.12 M, 2×5 min) and DMF (2×2 min). A solution of DOTA-tris(tBu) ester (142 µmol, 2 eq., 81 mg), PyBOP (142 µmol, 2 eq., 74 mg) and DIEA (570 µmol, 4 eq., 100 µL) was added to the resin. The reaction mixture was stirred overnight at room temperature. The resin was washed with DMF, DCM and Et 2 O then dried. The peptide was released from the resin and the side-chain protecting groups were removed by treatment with a TFA, OH was used to introduce the final cysteine. Removal of the N-Alloc protecting group of the Lys(Alloc) residue was performed by treating the resin twice with Pd ,
, Gln-SEA was obtained as a white solid powder after precipitation with diethyl ether (386 mg)
, The cyclization was performed on portions corresponding to ca. one tenth of the crude linear peptide. A TCEP/MPAA solution was prepared by dissolving TCEP (57.4 mg
, HPLC (anal.) t R = 9.8 min (method A)
, ESI-MS: average m/z = 1190.0 (2+), 793.8 (3+), vol.595
, Formation of Ln 3+ complexes 1 Ln (Ln = Tb or Gd
, 4 mg) and LnCl 3 (50 µmol, 15 mg) were dissolved in H 2 O and the pH was adjusted to 6.2 using NaOH. The solution was stirred overnight under argon (after 1h, the pH was controlled and adjusted to 6.2 if needed), TCEP, issue.18
, Tb : HPLC (anal.) t R = 9.9 min (method A)
,
, Gd : HPLC (anal.) t R = 9.9 min (method A)
,
, LCC2 GdGd : HPLC (anal.) t R = 9, vol.9
, ESI-MS: average m/z = 1257.2 (3+), 943.3 (4+), 754.5 (5+) / calculated av
, LCC2? Ln1Ln2 (Ln1 = Tb or Gd
After HPLC purification and freeze-drying, LCC2? Ln1Ln2 was obtained as a white powder, analytical HPLC (ca ,
, LCC2? TbEu : HPLC (anal.) t R = 9
, , vol.733
, 8 (5+) / calculated av. m/z = 1214, vol.736
, LCC2? TbGd : HPLC (anal.) t R = 9
, 3 (4+), 730.1 (5+) / calculated av. m/z = 1216, ESI-MS: average m/z = 1216.2 (3+), vol.912, p.33
, ESI-MS: average m/z = 1214.0 (3+), 910.7 (4+), 728.8 (5+) / calculated av
,
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