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Purity: ≥98%
Seco Rapamycin sodium (Secorapamycin A monosodium), the sodium salt of the ring-opened product of Rapamycin, is reported not to affect the mTOR function. Rapamycin (also known as Sirolimus), a natural macrocyclic lactone isolated from the bacterium Streptomyces hygroscopicus, is a specific and potent mTOR inhibitor with IC50 of ~0.1 nM in HEK293 cells. Rapamycin was used as a kind of original antifungal antibiotic, but since it also demonstrated immunosuppressant properties, it is being used in the prevention of transplant rejection because of its immunosuppressive effect. It also exhibits activity against several transplantable tumors and slightly activity to inactive against leukemias. The immunosuppressive effect of Rapamycin is exerted by inhibiting the activation and proliferation of T cells. Rapamycin binds to FK-binding protein 12 (FKBP12) and forms the rapamycin-FKBP12 complex, which regulates an enzyme that plays an important role in the progression of the cell cycle.
| ln Vitro |
Seco Rapamycin Disposition in Caco-2 Cell Monolayers and Human Tissue Homogenates. In order to ascertain if Seco Rapamycin (D2) may be converted into dihydro Sirolimus (M2), human liver, jejunal mucosal, and Caco-2 homogenates are cultured with 20 μM Seco Rapamycin. In a NADPH-dependent way, M2 was generated by each of these homogenates. At a dose of 100 μM, ketoconazole does not affect the production of M2 in any of the homogenates that were tested. Caco-2 cell monolayers are treated with 20 μM Seco Rapamycin to see if it may be converted to M2 in intact cells. Little Seco Rapamycin is found in the basolateral compartment and the cellular fraction after 4 hours when administered to the apical compartment. Additionally, not much M2 is found. Despite M2 becoming detectable in the apical compartment, LY335979 had minimal effect on the distribution of Seco Rapamycin following an apical dosage. In contrast, M2 and Seco Rapamycin are easily found in the apical compartment upon application of Seco Rapamycin to the basolateral compartment. Seco Rapamycin flow to the apical compartment is reduced by LY335679, while M2 levels in the apical and basolateral compartments are increased[1].
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| ln Vivo |
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| References |
[1]. Paine MF, et al. Identification of a novel route of extraction of sirolimus in human small intestine: roles ofmetabolism and secretion. J Pharmacol Exp Ther. 2002 Apr;301(1):174-86
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| Molecular Formula |
C₅₁H₇₈NNAO₁₃
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| Molecular Weight |
936.15
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| CAS # |
148554-65-8
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| Related CAS # |
Seco Rapamycin;147438-27-5
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| Appearance |
Typically exists as solids (or liquids in special cases) at room temperature
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| SMILES |
O=C([ C@H]1N(C(C([C@@]2(O)[ C@H](C)CC[C@@H](C[ C@H](OC)/C(C)=C/C=C/C=C/[C@@H](C)C[C@@H](C)C([ C@H](OC)[ C@H](O)/C(C)=C/[C@@H](C)C(/C=C/[ C@H](C)C[ C@H]3C[C@@H](OC)[ C@H](O)CC3)=O)=O)O2)=O)=O)CCCC1)[O-].[Na+]
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| Synonyms |
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| HS Tariff Code |
2934.99.9001
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: (1). This product requires protection from light (avoid light exposure) during transportation and storage. (2). Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture. |
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| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| Solubility (In Vitro) |
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| 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
Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *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 : PEG300 ：Tween 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). View More
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)] 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). View More
Oral Formulation 3: Dissolved in PEG400 (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 1.0682 mL | 5.3410 mL | 10.6820 mL | |
| 5 mM | 0.2136 mL | 1.0682 mL | 2.1364 mL | |
| 10 mM | 0.1068 mL | 0.5341 mL | 1.0682 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.
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.
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