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    Strontium Ranelate (S12911; Distrontium renelate)
    Strontium Ranelate (S12911; Distrontium renelate)

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    This product is for research use only, not for human use. We do not sell to patients.
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    InvivoChem Cat #: V0190
    CAS #: 135459-87-9Purity ≥98%

    Description: Strontium Ranelate (S-12911; Distrontium renelate; Protelos or Protos) is an approved antiosteoporotic drug in EU, it can also slow the course of osteoarthritis of the knee by both increasing bone formation and reducing bone resorption, leading to a rebalance of bone turnover in favor of bone formation. Strontium Ranelate is a strontium(II) salt of ranelic acid acting as an activator of the calcium-sensing receptor (CaSR) in non skeletal cells. The drug is unusual in that it both increases deposition of new bone by osteoblasts and reduces the resorption of bone by osteoclasts. It is therefore promoted as a 'dual action bone agent' (DABA). The use is now restricted to treatment of severe osteoporosis in postmenopausal women at high risk for fracture.

    References: Eur J Pharmacol. 2013 Apr 15;706(1-3):41-7.

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    Molecular Weight (MW)513.49 
    CAS No.135459-87-9 
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: <1 mg/mL
    Water: <1 mg/mL
    Ethanol: <1 mg/mL
    Other infoChemical Name: 3-Thiopheneacetic acid, 5-(bis(carboxymethyl)amino)-2-carboxy-4-cyano-, strontium salt (1:2)


    InChi Code: InChI=1S/C12H10N2O8S.2Sr/c13-2-6-5(1-7(15)16)10(12(21)22)23-11(6)14(3-8(17)18)4-9(19)20;;/h1,3-4H2,(H,15,16)(H,17,18)(H,19,20)(H,21,22);;/q;2*+2/p-4

    SMILES Code: O=C([O-])CC1=C(C([O-])=O)SC(N(CC([O-])=O)CC([O-])=O)=C1C#N.[Sr+2].[Sr+2]

    SynonymsTrade mane: Protelos or Proto; S-12911; S12911; S 12911; S 1291-1; S-1291-1; S1291-1; Strontium Ranelate

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    In Vitro

    In vitro activity: Strontium Ranelate (0.1-1 mM; 22 days; Mouse calvaria cells) treatment shows the expression of mRNA for early osteoblast markers (alkaline phosphatase, ALP) is visualized by day 5, while late markers (osteocalcin, OCN) are detectable only by day 15 and beyond. Strontium Ranelate (0.1-1 mM; 22 days; Mouse calvaria cells) treatment results in significantly increases the mRNA expression of the osteoblastic markers ALP, BSP and OCN at day 22 of MC cell culture. 

    Cell Assay: Strontium Ranelate is found to increase alkaline phosphatase activity and prostaglandin E2 production in a COX-2 dependent manner in murine marrow stromal cells.

    In VivoStrontium Ranelate increases bone formation and decreased bone resorption, which results in increased bone mass in the vertebrae of intact adult mice. In intact adult rats, Strontium Ranelate also increases bone mass, as measured by dual-energy X-ray absorptiometry, in lumbar vertebra and femur, and this is confirmed by histological assessment of trabecular bone volume in the tibial metaphysis. Strontium Ranelate is found to decrease bone resorption and to increase bone formation in alveolar bone in normal adult monkeys (Macaca fascicularis), which exhibits extensive bone remodeling. In ovariectomized rats, short-term (3 months) treatment with Strontium Ranelate prevents trabecular bone loss induced by oestrogen deficiency, as demonstrated by bone ash, bone mineral content and histomorphometric analysis in the tibial metaphysis. This effect results from decreased bone resorption while bone formation was maintained. These beneficial effects of Strontium Ranelate on bone mass and microarchitecture in ovariectomized rats are confirmed in long-term experiments. In this long-term study (2 years), the increase in bone mass and microarchitecture induced by Strontium Ranelate results in a marked improvement in bone strength, supporting the beneficial effect of this drug on bone resistance.
    Animal modelMice
    Formulation & DosageN/A

    [1]. Bonnelye E, Chabadel A, Saltel F, Jurdic P. Dual effect of strontium ranelate: stimulation of osteoblast differentiation and inhibition of osteoclast formation and resorption in vitro. Bone. 2008 Jan;42(1):129-38. Epub 2007 Sep 12.

    [2]. Marie PJ. Strontium ranelate: a dual mode of action rebalancing bone turnover in favour of bone formation. Curr Opin Rheumatol. 2006 Jun;18 Suppl 1:S11-5.

    These protocols are for reference only. InvivoChem does not independently validate these methods.


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