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Alendronate sodium trihydrate

≥97% (NMR), powder

MK-217, 4-amino-1-hydroxy-1-phosphonobutyl phosphonic acid, monosodium
Empirical Formula (Hill Notation):
C4H12NaNO7P2 · 3 H2O
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level


≥97% (NMR)






water, double-distilled: 10 mg/mL

storage temp.


SMILES string




InChI key


Gene Information

human ... FDPS(2224)

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Alendronate sodium trihydrate is a bone resorption inhibitor, farnesyl diphosphate synthase inhibitor and CD45 protein tyrosine phosphatase inhibitor.


100 mg in glass bottle

Biochem/physiol Actions

Alendronate sodium trihydrate is a bone resorption inhibitor; farnesyl diphosphate synthase inhibitor (IC50 = 460 nM); CD45 protein tyrosine phosphatase inhibitor.


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Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

More Documents

Quotes and Ordering

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. What quality control assays are typically done on Product A4978, Alendronate sodium trihydrate?

    The assays typically done on Product No. A4978 are appearance, solubility, elemental analysis for carbon, hydrogen and nitrogen (CHN) and proton NMR (1H-NMR) spectroscopy. The results of these assays may be found on the certificate of analysis for each lot.

  4. How should I dissolve Product A4978, Alendronate sodium trihydrate?

    This product is soluble in water at a concentration of 10 mg/mL.

  5. I see that Product A4978, Alendronate sodium trihydrate, is a trihydrate. How was the water content determined?

    Our supplier typically determines the water content by a loss on drying. We have not tested the water content in our labs here at Sigma by that method; we typically confirm the supplier’s value by CHN (elemental analysis for carbon, hydrogen and nitrogen, comparing the measured values to the theoretical values for the trihydrate).

  6. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  7. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  8. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Songsong Zhu et al.
Bone, 53(2), 340-349 (2013-01-08)
Osteoporosis (OP) and osteoarthritis (OA) are major health problems in the increasing elderly population, particularly in postmenopausal women, but their relationship remains unclear. The present study investigated whether alendronate (ALN), a potent inhibitor of bone resorption, could protect articular cartilage
Núria Guañabens et al.
Hepatology (Baltimore, Md.), 58(6), 2070-2078 (2013-05-21)
Osteoporosis resulting in bone fractures is a complication in patients with primary biliary cirrhosis (PBC). Once-weekly alendronate improves bone mass and is well tolerated in these patients, but there is a concern because of poor compliance. Therefore, the efficacy, adherence
J Dennis Bobyn et al.
Clinical orthopaedics and related research, 472(2), 687-694 (2013-07-03)
Fixation of cementless orthopaedic implants is not always achieved, particularly in challenging scenarios such as revision surgery, trauma, and tumor reconstruction. An adjunct therapy for improving implant fixation would improve the reliability and durability of certain reconstructive procedures. The purpose
Jaishree Garhyan et al.
Pathogens (Basel, Switzerland), 9(5) (2020-05-18)
One-third of the world's population is estimated to be latently infected with Mycobacterium tuberculosis (Mtb). Recently, we found that dormant Mtb hides in bone marrow mesenchymal stem cells (BM-MSCs) post-chemotherapy in mice model and in clinical subjects. It is known
Shmuel Banai et al.
American heart journal, 165(2), 234-240 (2013-01-29)
Activation of systemic innate immunity is critical in the chain of events leading to restenosis. LABR-312 is a novel compound that transiently modulates circulating monocytes, reducing accumulation of these cells at vascular injury sites and around stent struts. The purpose

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