TILUDRONATE DISODIUM

US Previously Marketed

Details

Stereochemistry	ACHIRAL
Molecular Formula	C7H7ClO6P2S.2Na
Molecular Weight	362.572
Optical Activity	NONE
Defined Stereocenters	0 / 0
E/Z Centers	0
Charge	0

SHOW SMILES / InChI

Structure Search

SMILES

[Na+].[Na+].OP([O-])(=O)C(SC1=CC=C(Cl)C=C1)P(O)([O-])=O

InChI

InChIKey=SKUHWSDHMJMHIW-UHFFFAOYSA-L

InChI=1S/C7H9ClO6P2S.2Na/c8-5-1-3-6(4-2-5)17-7(15(9,10)11)16(12,13)14;;/h1-4,7H,(H2,9,10,11)(H2,12,13,14);;/q;2*+1/p-2

HIDE SMILES / InChI

Molecular Formula	C7H7ClO6P2S
Molecular Weight	316.592
Charge	-2
Count

Stereochemistry	RACEMIC
Additional Stereochemistry	No
Defined Stereocenters	0 / 1
E/Z Centers	0
Optical Activity	( + / - )

Molecular Formula	Na
Molecular Weight	22.98976928
Charge	1
Count

Stereochemistry	ACHIRAL
Additional Stereochemistry	No
Defined Stereocenters	0 / 0
E/Z Centers	0
Optical Activity	NONE

Description
Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/020707s006lbl.pdf | https://www.drugbank.ca/drugs/DB01133 | http://www.centerwatch.com/drug-information/fda-approved-drugs/drug/243/skelid-tiludronate-disodium | https://www.ncbi.nlm.nih.gov/pubmed/11249559

Tiludronic acid is a bisphosphonate characterized by a (4-chlorophenylthio) group on the carbon atom of the basic P-C-P structure common to all bisphosphonates. Tiludronate is a first generation (non-nitrogenous) bisphosphonate in the same family as etidronate and clodronate. Tiludronate affects calcium metabolism and inhibits bone resorption and soft tissue calcification. Of the tiludronate that is resorbed (from oral preparation) or infused (for intravenous drugs), about 50% is excreted unchanged by the kidney. The remainder has a very high affinity for bone tissue, and is rapidly absorbed onto the bone surface. Tiludronic acid is marketed under the tradename Skelid. In vitro studies indicate that tiludronate disodium acts primarily on bone through a mechanism that involves inhibition of osteoclastic activity with a probable reduction in the enzymatic and transport processes that lead to resorption of the mineralized matrix. Bone resorption occurs following recruitment, activation, and polarization of osteoclasts. Tiludronate disodium appears to inhibit osteoclasts through at least two mechanisms: disruption of the cytoskeletal ring structure, possibly by inhibition of protein-tyrosine-phosphatase, thus leading to detachment of osteoclasts from the bone surface and the inhibition of the osteoclastic proton pump. SKELID is indicated for treatment of Paget's disease of bone (osteitis deformans).

Originator

Approval Year

Targets

Primary Target	Pharmacology	Condition	Potency
ATP 10 Target ID: CHEMBL2366048 Sources: https://www.ncbi.nlm.nih.gov/pubmed/21111853 \| https://www.drugbank.ca/drugs/DB01133 \| https://www.ncbi.nlm.nih.gov/pubmed/20722616	Inhibitor 8504
Osteoclasts 3 Target ID: CHEMBL612548 Sources: https://www.ncbi.nlm.nih.gov/pubmed/8573421 \| https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/020707s006lbl.pdf	Inhibitor 8504

Conditions

Condition	Modality	Targets	Highest Phase	Product
Paget's disease 16 Sources: https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/020707s006lbl.pdf https://www.ncbi.nlm.nih.gov/pubmed/11249559	Primary		Approved 8583	SKELID Approved Use SKELID is indicated for treatment of Paget's disease of bone (osteitis deformans). Launch Date 1997

C_max

Value	Dose	Analyte	Population
1.1 mg/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	200 mg 1 times / day multiple, oral dose: 200 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
2.3 mg/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	400 mg 1 times / day multiple, oral dose: 400 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
4.7 mg/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	600 mg 1 times / day multiple, oral dose: 600 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
7.8 mg/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	800 mg 1 times / day multiple, oral dose: 800 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN

AUC

Value	Dose	Analyte	Population
10.3 mg × h/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	200 mg 1 times / day multiple, oral dose: 200 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
25 mg × h/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	400 mg 1 times / day multiple, oral dose: 400 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
46.8 mg × h/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	600 mg 1 times / day multiple, oral dose: 600 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
80 mg × h/L EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	800 mg 1 times / day multiple, oral dose: 800 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN

T_1/2

Value	Dose	Analyte	Population
78 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	400 mg 1 times / day multiple, oral dose: 400 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
65.7 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	600 mg 1 times / day multiple, oral dose: 600 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN
72 h EXPERIMENT https://pubmed.ncbi.nlm.nih.gov/8911885	800 mg 1 times / day multiple, oral dose: 800 mg route of administration: Oral experiment type: MULTIPLE co-administered:	TILUDRONIC ACID plasma	Homo sapiens population: HEALTHY age: ADULT sex: MALE food status: UNKNOWN

Doses

Dose	Population	Adverse events
800 mg 1 times / day steady, oral Studied dose Dose: 800 mg, 1 times / day Route: oral Route: steady Dose: 800 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/8911885/	healthy, 18 - 45 years Health Status: healthy Age Group: 18 - 45 years Sex: M Sources: https://pubmed.ncbi.nlm.nih.gov/8911885/	Sources: https://pubmed.ncbi.nlm.nih.gov/8911885/
1200 mg 1 times / day steady, oral Higher than recommended Dose: 1200 mg, 1 times / day Route: oral Route: steady Dose: 1200 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/8427515/	unhealthy, 57 - 87 years Health Status: unhealthy Age Group: 57 - 87 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/8427515/	Other AEs: Gastrointestinal disturbance... Other AEs: Gastrointestinal disturbance (3 patients) Sources: https://pubmed.ncbi.nlm.nih.gov/8427515/
600 mg 1 times / day steady, oral Studied dose Dose: 600 mg, 1 times / day Route: oral Route: steady Dose: 600 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 68 years Health Status: unhealthy Age Group: 68 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	DLT: Gastrointestinal symptom NOS... Other AEs: Nausea, Diarrhoea... Dose limiting toxicities: Gastrointestinal symptom NOS (75%) Other AEs: Nausea (7 patients) Diarrhoea (7 patients) Arthralgia (2 patients) Dyspepsia (5 patients) Skeletal pain (3 patients) Vomiting (6 patients) Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/
400 mg 1 times / day steady, oral Recommended Dose: 400 mg, 1 times / day Route: oral Route: steady Dose: 400 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 72 years Health Status: unhealthy Age Group: 72 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	DLT: Gastrointestinal symptom NOS... Dose limiting toxicities: Gastrointestinal symptom NOS (31%) Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/

AEs

AE	Significance	Dose	Population
Gastrointestinal disturbance	3 patients	1200 mg 1 times / day steady, oral Higher than recommended Dose: 1200 mg, 1 times / day Route: oral Route: steady Dose: 1200 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/8427515/	unhealthy, 57 - 87 years Health Status: unhealthy Age Group: 57 - 87 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/8427515/
Arthralgia	2 patients	600 mg 1 times / day steady, oral Studied dose Dose: 600 mg, 1 times / day Route: oral Route: steady Dose: 600 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 68 years Health Status: unhealthy Age Group: 68 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/
Skeletal pain	3 patients	600 mg 1 times / day steady, oral Studied dose Dose: 600 mg, 1 times / day Route: oral Route: steady Dose: 600 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 68 years Health Status: unhealthy Age Group: 68 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/
Dyspepsia	5 patients	600 mg 1 times / day steady, oral Studied dose Dose: 600 mg, 1 times / day Route: oral Route: steady Dose: 600 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 68 years Health Status: unhealthy Age Group: 68 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/
Vomiting	6 patients	600 mg 1 times / day steady, oral Studied dose Dose: 600 mg, 1 times / day Route: oral Route: steady Dose: 600 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 68 years Health Status: unhealthy Age Group: 68 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/
Diarrhoea	7 patients	600 mg 1 times / day steady, oral Studied dose Dose: 600 mg, 1 times / day Route: oral Route: steady Dose: 600 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 68 years Health Status: unhealthy Age Group: 68 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/
Nausea	7 patients	600 mg 1 times / day steady, oral Studied dose Dose: 600 mg, 1 times / day Route: oral Route: steady Dose: 600 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 68 years Health Status: unhealthy Age Group: 68 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/
Gastrointestinal symptom NOS	75% DLT, Disc. AE	600 mg 1 times / day steady, oral Studied dose Dose: 600 mg, 1 times / day Route: oral Route: steady Dose: 600 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 68 years Health Status: unhealthy Age Group: 68 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/
Gastrointestinal symptom NOS	31% DLT, Disc. AE	400 mg 1 times / day steady, oral Recommended Dose: 400 mg, 1 times / day Route: oral Route: steady Dose: 400 mg, 1 times / day Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/	unhealthy, 72 years Health Status: unhealthy Age Group: 72 years Sex: M+F Sources: https://pubmed.ncbi.nlm.nih.gov/9307742/

Sourcing

Vendor/Aggregator	ID	URL
001 Chemical	DY578611	https://www.001chemical.com/chem/89987-06-4
3B Scientific (Wuhan) Corp	3B2-1368	http://www.3bsc.com/index/pro_info.php?id=55084
AHH Chemical co.,ltd	MT-59523	http://www.ahhchemical.com/product/MT-59523.html
Alfa Chemistry	ALP89987064	https://reagents.alfa-chemistry.com/product/tiludronate-disodium-salt-hydrate-cas-89987-06-4-free-acid-402.html
Ambinter	Amb22269245	http://www.ambinter.com/reference/22269245
BLD Pharm	BD154148	http://www.bldpharm.com/products/89987-06-4.html
ChemMol	49422201	http://www.chemmol.com/chemmol/49422201.html
ChemMol	99162429	http://www.chemmol.com/chemmol/99162429.html
Finetech	FT-0630969	http://www.finetechnology-ind.com/prod/detail/pub/89987-06-4.html
Glentham Life Sciences	GP4498	http://www.glentham.com/products/product/GP4498/
iChemical	EBD52449	http://www.ichemical.com/chemicals/cas-89987-06-4
Molcore	MC578611	https://www.molcore.com/product/89987-06-4
OChem	21129	http://www.ocheminc.com/index.php?act=psearch&pid=987T064
Smolecule	S560068	https://www.smolecule.com/products/s560068
THE BioTek	bt-363849	https://www.thebiotek.com/product/others/bt-363849

PubMed

Title	Date	PubMed
Arylamino methylene bisphosphonate derivatives as bone seeking matrix metalloproteinase inhibitors.	2013-11-01	24071448
Bisphosphonate protonation states, conformations, and dynamics on bone mineral probed by solid-state NMR without isotope enrichment.	2010-09	20554022
Long-term treatment with bisphosphonates and their safety in postmenopausal osteoporosis.	2010-07-21	20668715
Tiludronate infusion in the treatment of bone spavin: a double blind placebo-controlled trial.	2010-07	20636772
Five-year follow-up of Japanese patients with Paget's disease of the bone after treatment with low-dose oral alendronate: a case series.	2010-05-31	20509976
Effect of dodecylmaltoside (DDM) on uptake of BCS III compounds, tiludronate and cromolyn, in Caco-2 cells and rat intestine model.	2010-04	20136582
Bisphosphonates: molecular mechanisms of action and effects on bone cells, monocytes and macrophages.	2010	20722616
Prolonged unilateral disuse osteopenia 14 years post external fixator removal: a case history and critical review.	2010	20445732
Bisphosphonates and risk of atrial fibrillation: a meta-analysis.	2010	20170505
Bisphosphonates in oncology: evidence for the prevention of skeletal events in patients with bone metastases.	2009-09-21	19920919
Paget's disease 2: exploring diagnosis, management and support strategies.	2009-03-31	19326647
Once-yearly zoledronic acid in hip fracture prevention.	2009	19503777
Determination of bisphosphonate active pharmaceutical ingredients in pharmaceuticals and biological material: a review of analytical methods.	2008-11-04	18599247
Paget disease of bone: therapeutic options.	2008-10	18838910
Treatment of Paget's disease of bone: a survey of clinical practice in Australia.	2008-06	18353737
Comparative pharmacokinetics of two intravenous administration regimens of tiludronate in healthy adult horses and effects on the bone resorption marker CTX-1.	2008-04	18307502
Optimizing dosing frequencies for bisphosphonates in the management of postmenopausal osteoporosis: patient considerations.	2008	19281054
Use of zoledronic acid in the treatment of Paget's disease.	2007-10	18473015
Pharmacological effects of tiludronate in horses after long-term immobilization.	2007-09	17604709
Treatment with tiludronate has a similar effect to risedronate on Paget's disease activity assessed by bone markers and bone scintigraphy.	2007-06-05	17543143
Efficacy of tiludronate in the treatment of horses with signs of pain associated with osteoarthritic lesions of the thoracolumbar vertebral column.	2007-03	17331024
Medical management of Paget's disease of bone: indications for treatment and review of current therapies.	2006-12	17229018
Management of age-related osteoporosis and prevention of associated fractures.	2006-09	18360603
Effects of bisphosphonates on prostaglandin E2 and thromboxane B2 production in human whole blood and monocytes stimulated by lipopolysaccharide and A23187.	2006-08-09	16894405
Biochemical response to bisphosphonate therapy in pagetic patients with skull involvement.	2006-07	16868670
Relative binding affinities of bisphosphonates for human bone and relationship to antiresorptive efficacy.	2006-05	16185944
Gateways to clinical trials.	2006-04	16810345
-511 C/T IL1B gene polymorphism is associated to resistance to bisphosphonates treatment in Paget disease of bone.	2006-04	16257277
Minodronate suppresses prostaglandin F2alpha-induced vascular endothelial growth factor synthesis in osteoblasts.	2006-03	16673205
[Treatment of Paget's disease of bone with zoledronic acid].	2006-02-04	16454155
Comparative effects of antiresorptive agents on bone mineral density and bone turnover in postmenopausal women.	2006	18046915
Prediction of genotoxicity of chemical compounds by statistical learning methods.	2005-06	15962942
Tiludronate inhibits prostaglandin F2alpha-induced vascular endothelial growth factor synthesis in osteoblasts.	2005-05-31	15922088
[Paget's disease and its therapeutic management].	2005-04-23	15962504
Non-isomerized C-telopeptide fragments are highly sensitive markers for monitoring disease activity and treatment efficacy in Paget's disease of bone.	2005-04	15765177
The role of bisphosphonates in the management of advanced cancer with a focus on non-small-cell lung cancer. Part 1: Mechanisms of action, role of biomarkers and preclinical applications.	2005	15775688
Steroid-free medium discloses oestrogenic effects of the bisphosphonate clodronate on breast cancer cells.	2004-11-01	15477866
In vitro toxicity of bisphosphonates on human neuroblastoma cell lines.	2004-09	15494642
Management of Paget's disease of bone.	2004-08	15187244
Long-term biochemical response after bisphosphonate therapy in Paget's disease of bone. Proposed intervals for monitoring treatment.	2004-07	15054158
Effect of bisphosphonate treatment in patients with Paget's disease of the skull.	2004-01	12923287
Medical treatment of vertebral osteoporosis.	2003-10	13680313
Bisphosphonate resistance in Paget's disease of bone.	2003-08	12905487
Bisphosphonates antagonise bone growth factors' effects on human breast cancer cells survival.	2003-07-07	12838321
Tiludronate as a new therapeutic agent in the treatment of navicular disease: a double-blind placebo-controlled clinical trial.	2003-06	12880010
Current management strategies for hypercalcemia.	2003	15966562
New insights into the molecular mechanisms of action of bisphosphonates.	2003	14529538
Human pharmacokinetics of tiludronate.	1995-11	8573422
A possible mechanism of the specific action of bisphosphonates on osteoclasts: tiludronate preferentially affects polarized osteoclasts having ruffled borders.	1995-08	8554921
Biological and clinical assessment of a new bisphosphonate, (chloro-4 phenyl) thiomethylene bisphosphonate, in the treatment of Paget's disease of bone.	1988	3073800

Patents

Sample Use Guides

In Vivo Use Guide

A single 400-mg daily oral dose of SKELID (Tiludronic acid), taken with 6 to 8 ounces of plain water only, should be administered for a period of 3 months. Beverages other than plain water (including mineral water), food (see below), and some medications. Patients should not lie down for at least 30 minutes after taking this medication. SKELID should not be taken within 2 hours of food.

Route of Administration: Oral

In Vitro Use Guide

The ability of tiludronate to inhibit proton transport was 5-fold higher in kidney-derived chicken vesicles (IC50 = 1.1 mM) and 10,000-fold higher in vesicles derived from chicken osteoclasts (IC50 = 466 nM). Tiludronate also potently inhibited proton transport in yeast microsomal preparations (IC50 = 3.5 uM) and inhibited the activity of purified yeast V-ATPase.

Substance Class	Chemical Created by `admin` on `Mon Mar 31 21:27:03 GMT 2025` Edited by `admin` on `Mon Mar 31 21:27:03 GMT 2025`
Record UNII	BH6M93CIA0
Record Status	`Validated (UNII)`
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Name

Type

Language

TILUDRONATE SODIUM

Preferred Name

English

TILUDRONATE DISODIUM

Official Name

English

TILUDRONIC ACID DISODIUM SALT

Common Name

English

SR-41319B

Code

English

TILUDRONATE DISODIUM [ORANGE BOOK]

Common Name

English

TILUDRONATE DISODIUM ANHYDROUS

Common Name

English

TILUDRONATE DISODIUM [GREEN BOOK]

Common Name

English

TILUDRONATE DISODIUM [VANDF]

Common Name

English

SKELID

Brand Name

English

TILUDRONATE DISODIUM [MART.]

Common Name

English

TILUDRONATE DISODIUM [USAN]

Common Name

English

SR 41319B

Code

English

TILUDRONIC ACID DISODIUM SALT [MI]

Common Name

English

Tiludronate sodium [WHO-DD]

Common Name

English

PHOSPHONIC ACID, (((4-CHLOROPHENYL)THIO)METHYLENE)BIS-, DISODIUM SALT

Common Name

English

DISODIUM DIHYDROGEN (((P-CHLOROPHENYL)THIO)METHYLENE)DIPHOSPHONATE

Common Name

English

Classification Tree Code System Code

NCI_THESAURUS

C67439