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Edotreotide gallium Ga-68



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Dotatate gallium Ga-68.png

ChemSpider 2D Image | L-threonine, N-[[(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-7-[(1R)-1-hydroxyethyl]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-19-[[(2R)-1-oxo-3-phenyl-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododec-1-yl]acetyl]amino]propyl]amino]-1,2-dithia-5,8,11,14,17-pentaazacycloeicos-4-yl]carbonyl]-, gallium salt (1:1) | C65H87GaN14O19S2


Edotreotide gallium Ga-68

エドトレオチドガリウム (68Ga);

  • Edotreotide Gallium Ga-68
  • Gallium (68Ga) edotreotide
  • Gallium edotreotide Ga-68
  • Gallium Ga 68-dotatoc
  • Gallium Ga 68-edotreotide
  • Gallium Ga-68 edotreotide


L-threonine, N-[[(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-7-[(1R)-1-hydroxyethyl]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-19-[[(2R)-1-oxo-3-phenyl-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododec-1-yl]acetyl]amino]propyl]amino]-1,2-dithia-5,8,11,14,17-pentaazacycloeicos-4-yl]carbonyl]-, gallium salt (1:1)

2,2′,2”-[10-(2-{[(2R)-1-{[(4R,7S,10S,13R,16S,19R)-10-(4-Aminobutyl)-4-{[(1S,2R)-1-carboxy-2-hydroxypropyl]carbamoyl}-16-(4-hydroxybenzyl)-7-[(1R)-1-hydroxyéthyl]-13-(1H-indol-3-ylméthyl)-6,9,12,15,18 -pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-19-yl]amino}-1-oxo-3-phényl-2-propanyl]amino}-2-oxoéthyl)-1,4,7,10-tétraazacyclododécane-1,4,7-triyl]triacétate de gallium
Gallium 2,2′,2”-[10-(2-{[(2R)-1-{[(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-4-{[(1S,2R)-1-carboxy-2-hydroxypropyl]carbamoyl}-16-(4-hydroxybenzyl)-7-[(1R)-1-hydroxyethyl]-13-(1H-indol-3-ylmethyl)-6,9, 12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-19-yl]amino}-1-oxo-3-phenyl-2-propanyl]amino}-2-oxoethyl)-1,4,7,10-tetraazacyclododecane-1,4,7-triyl]triacetate
gallium 2,2′,2”-[10-(2-{[(2R)-1-{[(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-4-{[(1S,2R)-1-carboxy-2-hydroxypropyl]carbamoyl}-16-(4-hydroxybenzyl)-7-[(1R)-1-hydroxyethyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosan-19-yl]amino}-1-oxo-3-phenylpropan-2-yl]amino}-2-oxoethyl)-1,4,7,10-tetraazacyclododecane-1,4,7-triyl]triacetate
L-Threonine, N-[[(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-7-[(1R)-1-hydroxyethyl]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-19-[[(2R)-1-oxo-3-phenyl-2-[[2-[4,7,10-tr is(carboxymethyl)-1,4,7,10-tetraazacyclododec-1-yl]acetyl]amino]propyl]amino]-1,2-dithia-5,8,11,14,17-pentaazacycloeicos-4-yl]carbonyl]-, gallium salt (1:1)
L-threonine, N-[[(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-7-[(1R)-1-hydroxyethyl]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-19-[[(2R)-1-oxo-3-phenyl-2-[[2-[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododec-1-yl]acetyl]amino]propyl]amino]-1,2-dithia-5,8,11,14,17-pentaazacycloeicos-4-yl]carbonyl]-, gallium salt (1:1)
(68Ga)Gallium dotatate
1027785-90-5 [RN]
C65H92N14O18S2. Ga
Mol weight

FDA, 2019/8/21 APPROVED Ga-68-dotatoc


Indicated for use with positron emission tomography (PET) for the localization of somatostatin receptor positive neuroendocrine tumors (NETs)

Diagnostic aid (tumor), Radioactive agent

Edotreotide gallium Ga-68 is an 8 amino acid peptide bound to the chelator 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA).8 Edotreotide gallium Ga-68 is indicated for localizing somatostatin receptor positive neuroendocrine tumors by positron emission tomography.7 Dotatate gallium Ga-68 is used for a similar indication.2 Dotatate gallium Ga-68 has lower tumor uptake but this data is highly variable between patients.2

Edotreotide gallium Ga-68 was granted FDA approval on 21 August 2019.7


Edotreotide gallium Ga-68 is a radioactive diagnostic compound used in positron emission tomography (PET) for diagnose somatostatin receptor positive neuroendocrine tumors in pediatrics and adults.7

Associated Conditions


Edotreotide gallium Ga-68 binds to somatostatin receptors where it emits beta particle radiation for detection by positron emission tomography.7 The duration of action is short as it has short radioactive and biological half lives.4,8 Patients should hydrate before and after the administration of this medication to encourage frequent urination and rapid clearance.7

Mechanism of action

Edotreotide gallium Ga-68 binds to somatostatin receptors, with higher affinity for somatostatin receptor type 2, where it emits beta particle radiation for detection by positron emission tomography (PET).7


Edotreotide gallium Ga-68 reaches 80% activity in tumors within 30 minutes,4 and reaches its highest activity in tumors 70±20min post injection.8 Edotreotide is mostly taken up into the spleen, followed by kidneys, liver, pituitary, thyroid, and adrenal gland.3,4,8 Accumulation in non-tumor tissue reaches a maximum within 40 minutes.4

Volume of distribution

Data regarding the volume of distribution of this medication is not readily available.7

Protein binding

Data suggests edotreotide gallium-Ga 68 may bind to proteins in serum.6 The extent of serum protein binding and which proteins it binds to are not described in the literature.


Edotreotide gallium Ga-68 is largely unmetabolized.8 4 hours post injection there are no metabolites or degradation products detectable in serum.4

Route of elimination

16% of a Edotreotide gallium Ga-68 dose is eliminated in the urine within 2h.1,7 It is expected that Edotreotide gallium Ga-68 is exclusively eliminated in the urine.1,7 In animal studies, edotreotide Y-90 was >80% eliminated in the urine within 24h, with 95.6±3.4% being unmetabolized.3,8 <1% of a dose is detected in the feces.5

Half life

Edotreotide gallium Ga-68 has a radioactive half life of 68 minutes.4,8 Edotreotide gallium Ga-68 has two half lives, 2.0±0.3min and 48±7min for its removal from blood.4,8


Data regarding the clearance of this medication is not readily available.7


The LD50 of this medication is not readily available.7

In the event of an overdose, give patients plenty of fluids and diuretics if necessary to encourage frequent urination.7 If possible, an estimation of radioactive dose should be performed.7

General References

  1. Hartmann H, Zophel K, Freudenberg R, Oehme L, Andreeff M, Wunderlich G, Eisenhofer G, Kotzerke J: [Radiation exposure of patients during 68Ga-DOTATOC PET/CT examinations]. Nuklearmedizin. 2009;48(5):201-7. doi: 10.3413/nukmed-0214. Epub 2009 Jul 28. [PubMed:19639164]
  2. Poeppel TD, Binse I, Petersenn S, Lahner H, Schott M, Antoch G, Brandau W, Bockisch A, Boy C: 68Ga-DOTATOC versus 68Ga-DOTATATE PET/CT in functional imaging of neuroendocrine tumors. J Nucl Med. 2011 Dec;52(12):1864-70. doi: 10.2967/jnumed.111.091165. Epub 2011 Nov 9. [PubMed:22072704]
  3. de Jong M, Bakker WH, Krenning EP, Breeman WA, van der Pluijm ME, Bernard BF, Visser TJ, Jermann E, Behe M, Powell P, Macke HR: Yttrium-90 and indium-111 labelling, receptor binding and biodistribution of [DOTA0,d-Phe1,Tyr3]octreotide, a promising somatostatin analogue for radionuclide therapy. Eur J Nucl Med. 1997 Apr;24(4):368-71. doi: 10.1007/bf00881807. [PubMed:9096086]
  4. Hofmann M, Maecke H, Borner R, Weckesser E, Schoffski P, Oei L, Schumacher J, Henze M, Heppeler A, Meyer J, Knapp H: Biokinetics and imaging with the somatostatin receptor PET radioligand (68)Ga-DOTATOC: preliminary data. Eur J Nucl Med. 2001 Dec;28(12):1751-7. doi: 10.1007/s002590100639. Epub 2001 Oct 31. [PubMed:11734911]
  5. Kwekkeboom DJ, Kooij PP, Bakker WH, Macke HR, Krenning EP: Comparison of 111In-DOTA-Tyr3-octreotide and 111In-DTPA-octreotide in the same patients: biodistribution, kinetics, organ and tumor uptake. J Nucl Med. 1999 May;40(5):762-7. [PubMed:10319747]
  6. Bangard M, Behe M, Guhlke S, Otte R, Bender H, Maecke HR, Biersack HJ: Detection of somatostatin receptor-positive tumours using the new 99mTc-tricine-HYNIC-D-Phe1-Tyr3-octreotide: first results in patients and comparison with 111In-DTPA-D-Phe1-octreotide. Eur J Nucl Med. 2000 Jun;27(6):628-37. doi: 10.1007/s002590050556. [PubMed:10901448]
  7. FDA Approved Drug Products: Gallium Dotatoc GA 68 [Link]
  8. EMA Assessment Report: SomaKit TOC [Link]

///////////Edotreotide gallium Ga-68, FDA 2019, エドトレオチドガリウム (68Ga),

IUPAC name

2-[4-[2-[[(2R)-1-[[(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-4-[[(2R,3R)-1,3-dihydroxybutan-2-yl]carbamoyl]-7-[(1R)-1-hydroxyethyl]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicos-19-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-2-oxoethyl]-7,10-bis(carboxymethyl)-1,4,7,10-tetrazacyclododec-1-yl]acetic acid
3D model (JSmol)
PubChem CID
Molar mass 1421.65 g·mol−1
License data
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Edotreotide (USAN, codenamed SMT487, also known as (DOTA0Phe1Tyr3)octreotide, or DOTATOC) is a substance which, when bound to various radionuclides, is used in the treatment and diagnosis of certain types of cancer.[1]

Yttrium-90 labeled edoteotide has been the subject of a trial by the National Cancer Institute to determine its effects in young cancer patients (up to 25 years of age) for its ability to locate malignant cancer cells without harming normal cells. Specific cancers being included in the trial include neuroblastoma, childhood brain tumours and gastrointestinal cancer.[2][3]

Yttrium-90 labeled edotreotide


  1. ^ Martindale, The Extra Pharmacopoeia, 30th ed, p1161.
  2. ^ Bushnell, D. L.; O’Dorisio, T. M.; O’Dorisio, M. S.; Menda, Y.; Hicks, R. J.; Van Cutsem, E.; Baulieu, J. -L.; Borson-Chazot, F.; Anthony, L.; Benson, A. B.; Oberg, K.; Grossman, A. B.; Connolly, M.; Bouterfa, H.; Li, Y.; Kacena, K. A.; Lafrance, N.; Pauwels, S. A. (2010). “90Y-Edotreotide for Metastatic Carcinoid Refractory to Octreotide”Journal of Clinical Oncology28 (10): 1652–1659. doi:10.1200/JCO.2009.22.8585PMC 4872330PMID 20194865.
  3. ^ Radiolabeled Octreotide in Treating Children With Advanced or Refractory Solid Tumors
.//////////  эдотреотид 
依度曲肽 , fda 2019

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DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with AFRICURE PHARMA, ROW2TECH, NIPER-G, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India as ADVISOR, earlier assignment was with GLENMARK LIFE SCIENCES LTD, as CONSUlTANT, Retired from GLENMARK in Jan2022 Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 32 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 32 PLUS year tenure till date Feb 2023, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 100 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 100 Lakh plus views on dozen plus blogs, 227 countries, 7 continents, He makes himself available to all, contact him on +91 9323115463, email, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 38 lakh plus views on New Drug Approvals Blog in 227 countries...... , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc He has total of 32 International and Indian awards

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