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Octreotide pamoate

Alias: SMS 201-995 pa; SMS pa; Octreotide pamoate; Octreotide pamoate; SMS 201-995 pa LAR; 135467-16-2; NSC-685403; NSC685403; DA-66304; D05230; 10-(4-aminobutyl)-19-[(2-amino-3-phenylpropanoyl)amino]-16-benzyl-N-(1,3-dihydroxybutan-2-yl)-7-(1-hydroxyethyl)-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carboxamide;4-[(3-carboxy-2-hydroxynaphthalen-1-yl)methyl]-3-hydroxynaphthalene-2-carboxylic acid;
Cat No.:V26837 Purity: ≥98%
Octreotide pamoate (SMS-201-995; Octreotide-LAR; Sandostatin, Longastatin),the pamoate salt of Octreotide, isan octapeptide and somatostatin analoguethat has been approved for use in the treatment of hormone-secreting tumors; hypergastrinemia; diabetes, hypertension and small bowel fistula.
Octreotide pamoate
Octreotide pamoate Chemical Structure CAS No.: 135467-16-2
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price
500mg
1g
Other Sizes

Other Forms of Octreotide pamoate:

  • Octreotide
Official Supplier of:
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Product Description

Octreotide pamoate (SMS-201-995; Octreotide-LAR; Sandostatin, Longastatin), the pamoate salt of Octreotide, is an octapeptide and somatostatin analogue that has been approved for use in the treatment of hormone-secreting tumors; hypergastrinemia; diabetes, hypertension and small bowel fistula.

Biological Activity I Assay Protocols (From Reference)
Targets
SSTR2/3/5
ln Vitro
Glycogen synthase (GS) activity is increased and phosphorylated glycogen synthase kinase 3β (GSK3β) is induced by octreotide pamoate (10–8 mM, 6 hours) [3].
ln Vivo
Subcutaneous injection of 30 mg/kg once is sufficient to greatly limit tumor growth without causing weight gain [1]. Dogs diagnosed with appendiceal osteosarcoma (OSA) can receive intramuscular injections of octreotide pamoate (60 mg/kg every 21–42 days) to reduce serum insulin-like growth factor (IGF-I) without experiencing toxicity [2]. Obese male Sprague-Dawley (SD) rats get subcutaneous injections of octreotide pamoate (40 μg/kg) every 12 hours for eight days, which improves hepatic glycogen production [3].
Cell Assay
Western Blot analysis [3]
Cell Types: Human hepatoblastoma HepG2 cell line
Tested Concentrations: 10-8mM
Incubation Duration: 6 hrs (hours)
Experimental Results: The protein expression levels of phosphorylated Akt and GSK3β increased by 140.8% and 12.2%, respectively, and the mRNA levels increased GS has also increased.
Animal Protocol
Animal/Disease Models: Female nude mice (nu/nu Balbc-A, body weight 19-22 g) [1]
Doses: 30 mg/kg
Route of Administration: subcutaneous injection; primary
Experimental Results: demonstrated that the average tumor volume of the treatment group was that of the control group 25.8% and had no effect on body weight.

Animal/Disease Models: Dogs with appendiceal OSA [2]
Doses: 60 mg/kg
Route of Administration: intramuscularinjection; every 21 days; 42 days
Experimental Results: Mean serum IGF-I diminished by 43% compared to mean baseline concentrations %.

Animal/Disease Models: Male SD (SD (Sprague-Dawley)) rat (3 weeks; 40-60 g) [3]
Doses: 40 μg/kg
Route of Administration: subcutaneous injection; every 12 hrs (hrs (hours)); 8 days
Experimental Results: Significant improvement in fat Deposit and reduce lipid penetration.
References

[1]. Indirect antiproliferative effect of the somatostatin analog octreotide on MIA PaCa-2 human pancreatic carcinoma in nude mice. Yale J Biol Med. 1997 Sep-Dec;70(5-6):549-54.

[2]. A randomized controlled trial of octreotide pamoate long-acting release and carboplatin versus carboplatin alone in dogs with naturally occurring osteosarcoma: evaluation of insulin-like growth factor suppression and chemotherapy. Clin Cancer Res. 2002 Jul;8(7):2406-12.

[3]. Effects of octreotide on hepatic glycogenesis in rats with high fat diet‑induced obesity. Mol Med Rep. 2017 Jul;16(1):109-118.

Additional Infomation
Octreotide Pamoate is a synthetic long-acting octapeptide analogue of endogenous somatostatin. Octreotide pamoate binds to somatostatin receptors expressed by some neuroendocrine and non-neuroendocrine tumor cells, thereby initiating somatostatin receptor-mediated apoptosis. Other possible antineoplastic activities of this agent include suppression of tumor angiogenesis and tumor growth-promoting insulin-like growth factor 1 (IGF-1). (NCI04)
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C72H82N10O16S2
Molecular Weight
1407.60889577866
Exact Mass
1396.55
Elemental Analysis
C, 61.02; H, 6.06; N, 10.02; O, 18.32; S, 4.59
CAS #
135467-16-2
Related CAS #
Octreotide;83150-76-9
PubChem CID
44194024
Appearance
Typically exists as solid at room temperature
LogP
0.77
Hydrogen Bond Donor Count
17
Hydrogen Bond Acceptor Count
20
Rotatable Bond Count
21
Heavy Atom Count
100
Complexity
2310
Defined Atom Stereocenter Count
10
SMILES
C[C@H]([C@H]1C(=O)N[C@@H](CSSC[C@@H](C(=O)N[C@H](C(=O)N[C@@H](C(=O)N[C@H](C(=O)N1)CCCCN)CC2=CNC3=CC=CC=C32)CC4=CC=CC=C4)NC(=O)[C@@H](CC5=CC=CC=C5)N)C(=O)N[C@H](CO)[C@@H](C)O)O.C1=CC=C2C(=C1)C=C(C(=C2CC3=C(C(=CC4=CC=CC=C43)C(=O)O)O)O)C(=O)O
InChi Key
KFWJVABDRRDUHY-XJQYZYIXSA-N
InChi Code
InChI=1S/C49H66N10O10S2.C23H16O6/c1-28(61)39(25-60)56-48(68)41-27-71-70-26-40(57-43(63)34(51)21-30-13-5-3-6-14-30)47(67)54-37(22-31-15-7-4-8-16-31)45(65)55-38(23-32-24-52-35-18-10-9-17-33(32)35)46(66)53-36(19-11-12-20-50)44(64)59-42(29(2)62)49(69)58-41;24-20-16(14-7-3-1-5-12(14)9-18(20)22(26)27)11-17-15-8-4-2-6-13(15)10-19(21(17)25)23(28)29/h3-10,13-18,24,28-29,34,36-42,52,60-62H,11-12,19-23,25-27,50-51H2,1-2H3,(H,53,66)(H,54,67)(H,55,65)(H,56,68)(H,57,63)(H,58,69)(H,59,64);1-10,24-25H,11H2,(H,26,27)(H,28,29)/t28-,29-,34-,36+,37+,38-,39-,40+,41+,42+;/m1./s1
Chemical Name
(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-19-[[(2R)-2-amino-3-phenylpropanoyl]amino]-16-benzyl-N-[(2R,3R)-1,3-dihydroxybutan-2-yl]-7-[(1R)-1-hydroxyethyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carboxamide;4-[(3-carboxy-2-hydroxynaphthalen-1-yl)methyl]-3-hydroxynaphthalene-2-carboxylic acid
Synonyms
SMS 201-995 pa; SMS pa; Octreotide pamoate; Octreotide pamoate; SMS 201-995 pa LAR; 135467-16-2; NSC-685403; NSC685403; DA-66304; D05230; 10-(4-aminobutyl)-19-[(2-amino-3-phenylpropanoyl)amino]-16-benzyl-N-(1,3-dihydroxybutan-2-yl)-7-(1-hydroxyethyl)-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carboxamide;4-[(3-carboxy-2-hydroxynaphthalen-1-yl)methyl]-3-hydroxynaphthalene-2-carboxylic acid;
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 0.7104 mL 3.5521 mL 7.1042 mL
5 mM 0.1421 mL 0.7104 mL 1.4208 mL
10 mM 0.0710 mL 0.3552 mL 0.7104 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Clinical Trial Information
Open Label Study of a Single Dose of a New Extended Long Acting Formulation of Octreotide Pamoate in Healthy Volunteers
CTID: NCT00432068
Phase: Phase 1
Status: Completed
Date: 2015-12-03
Cabazitaxel Plus Prednisone With Octreotide For Castration-Resistant Prostate Cancer (CRPC) Previously Treated With Docetaxel
CTID: NCT01469338
Phase: Phase 2
Status: Terminated
Date: 2014-11-24
Octreotide, Tamoxifen, and Chemotherapy in Treating Women With Breast Cancer
CTID: NCT00002967
Phase: Phase 3
Status: Completed
Date: 2013-06-21
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