WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 125679

CAS#: 177943-88-3 (free base)

Description: DOTA-TATE can be reacted with the radionuclides gallium-68 (T1/2 = 68 min), lutetium-177 (T1/2 = 6.65 d) and copper-64 (T1/2 = 12.7 h) to form radiopharmaceuticals for positron emission tomography (PET) imaging or radionuclide therapy. DOTA-TATE is a compound containing tyrosine3-octreotate, an SSR agonist, and the bifunctional chelator DOTA (tetraxetan). SSRs are found with high density in numerous malignancies, including CNS, breast, lung, and lymphatics.

Chemical Structure

CAS# 177943-88-3 (free base)

Theoretical Analysis

MedKoo Cat#: 125679
CAS#: 177943-88-3 (free base)
Chemical Formula: C65H90N14O19S2
Exact Mass: 1,434.59
Molecular Weight: 1,435.630
Elemental Analysis: C, 54.38; H, 6.32; N, 13.66; O, 21.17; S, 4.47

Price and Availability

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5mg USD 1650 2 Weeks
10mg USD 2950 2 Weeks
100mg USD 6950 2 Weeks
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Related CAS #: 177943-89-4 (acetate)   177943-88-3 (free base)    

Synonym: DOTA-(Tyr3)-octreotate; NOTA-TATE; NOTA TATE

IUPAC/Chemical Name: 2,2',2''-(10-(2-(((2R)-1-(((4R,10S,13R,19R)-13-((1H-indol-3-yl)methyl)-10-(4-aminobutyl)-4-(((1S,2S)-1-carboxy-2-hydroxypropyl)carbamoyl)-16-(4-hydroxybenzyl)-7-((R)-1-hydroxyethyl)-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)triacetic acid


InChi Code: InChI=1S/C65H90N14O19S2/c1-38(80)56-64(96)73-51(63(95)75-57(39(2)81)65(97)98)37-100-99-36-50(72-59(91)47(28-40-10-4-3-5-11-40)68-52(83)32-76-20-22-77(33-53(84)85)24-26-79(35-55(88)89)27-25-78(23-21-76)34-54(86)87)62(94)70-48(29-41-15-17-43(82)18-16-41)60(92)71-49(30-42-31-67-45-13-7-6-12-44(42)45)61(93)69-46(58(90)74-56)14-8-9-19-66/h3-7,10-13,15-18,31,38-39,46-51,56-57,67,80-82H,8-9,14,19-30,32-37,66H2,1-2H3,(H,68,83)(H,69,93)(H,70,94)(H,71,92)(H,72,91)(H,73,96)(H,74,90)(H,75,95)(H,84,85)(H,86,87)(H,88,89)(H,97,98)/t38-,39+,46+,47-,48?,49-,50+,51+,56?,57+/m1/s1

SMILES Code: C[C@@H](O)C1C(N[C@H](C(N[C@H](C(O)=O)[C@@H](O)C)=O)CSSC[C@H](NC([C@H](NC(CN2CCN(CC(O)=O)CCN(CC(O)=O)CCN(CC(O)=O)CC2)=O)CC3=CC=CC=C3)=O)C(NC(CC4=CC=C(O)C=C4)C(N[C@H](CC5=CNC6=CC=CC=C65)C(N[C@@H](CCCCN)C(N1)=O)=O)=O)=O)=O

Appearance: To be determined

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: 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.

Storage Condition: Dry, dark and at 0 -4 C for short term (days to weeks) or -20 C for long term(months to years).

Solubility: To be determined

Shelf Life: >2 years if stored properly

Drug Formulation: To be determined

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

More Info: DOTA-TATE can be reacted with the radionuclides gallium-68 (T1/2 = 68 min), lutetium-177 (T1/2 = 6.65 d) and copper-64 (T1/2 = 12.7 h) to form radiopharmaceuticals for positron emission tomography (PET) imaging or radionuclide therapy. 177Lu DOTA-TATE therapy is a form of peptide receptor radionuclide therapy (PRRT) which targets somatostatin receptors (SSR).[3][4] In that form of application it is a form of targeted drug delivery. The role of SSR agonists (i.e. somatostatin and its analogs such as octreotide, somatuline and vapreotide) in neuroendocrine tumours (NETs) is well established, and massive SSR overexpression is present in several NETs. (Tyr3)-octreotate binds the transmembrane receptors of NETs with highest activity for SSR2 and is actively transported into the cell via endocytosis, allowing trapping of the radioactivity and increasing the probability of the desired double-strand DNA breakage (for tumour control). Trapping improves the probability of this kind of effect due to the relatively short range of the beta particles emitted by 177Lu, which have a maximum range in tissue of <2 mm. Bystander effects include cellular damage by free radical formation. 68Ga-NOTA-TATE and 68Ga-DOTA-TATE demonstrated comparable tumour uptake in an AR42J mouse model. An initial clinical study revealed that 68Ga-NOTA-TATE may have reduced background uptake in the major organs such as the liver. Although the subject numbers were limited, further investigation of 68Ga-NOTA-TATE is warranted for detecting SSTR2-positive neuroendocrine tumours.

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 1,435.63 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol:
In vitro protocol:
In vivo protocol:

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Xia Y, Zeng C, Zhao Y, Zhang X, Li Z, Chen Y. Comparative evaluation of 68Ga-labelled TATEs: the impact of chelators on imaging. EJNMMI Res. 2020 Apr 15;10(1):36. doi: 10.1186/s13550-020-00620-6. PMID: 32297029; PMCID: PMC7158967.