MedKoo Cat#: 461450 | Name: Difetarsone
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Description:

WARNING: This product is for research use only, not for human or veterinary use.

Difetarsone is an antiprotozoal agent. Various studies have shown it to be particularly effective against Trichuris trichiura, commonly known as the whipworm. It has also been used to treat Entamoeba histolytica infections. Prior to the drugs use in the early 1970s, there were few effective treatments for this infection. Difetarsone often has minor side effects, which include rashes, nausea and vomiting. It has also resulted in angioedema in at least one known case.

Chemical Structure

Difetarsone
CAS#3639-19-8

Theoretical Analysis

MedKoo Cat#: 461450

Name: Difetarsone

CAS#: 3639-19-8

Chemical Formula: C14H18As2N2O6

Exact Mass: 459.9597

Molecular Weight: 460.14

Elemental Analysis: C, 36.54; H, 3.94; As, 32.56; N, 6.09; O, 20.86

Price and Availability

Size Price Availability Quantity
5mg USD 150.00 Ready to ship
10mg USD 250.00 Ready to ship
25mg USD 550.00 Ready to ship
50mg USD 950.00 Ready to ship
100mg USD 1,650.00 Ready to ship
200mg USD 2,650.00 Ready to ship
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Related CAS #
No Data
Synonym
Difetarsone; Difetarsonum; Diphetarson; RP 4763; RP-4763; RP4763; Benarsal;
IUPAC/Chemical Name
((ethane-1,2-diylbis(azanediyl))bis(4,1-phenylene))diarsonic acid
InChi Key
YQVALJGIKVYRNI-UHFFFAOYSA-N
InChi Code
InChI=1S/C14H18As2N2O6/c19-15(20,21)11-1-5-13(6-2-11)17-9-10-18-14-7-3-12(4-8-14)16(22,23)24/h1-8,17-18H,9-10H2,(H2,19,20,21)(H2,22,23,24)
SMILES Code
O=[As](C1=CC=C(NCCNC2=CC=C([As](O)(O)=O)C=C2)C=C1)(O)O
Appearance
Solid powder
Purity
>98% (or refer to the Certificate of Analysis)
Shipping Condition
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility
Soluble in DMSO
Shelf Life
>3 years if stored properly
Drug Formulation
This drug may be formulated in DMSO
Stock Solution Storage
0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code
2934.99.03.00
More Info
Biological target:
Difetarsone is an antiprotozoal agent.
In vitro activity:
TBD
In vivo activity:
TBD
Solvent mg/mL mM comments
Solubility
DMSO 0.0 0.00
Note: There can be variations in solubility for the same chemical from different vendors or different batches from the same vendor. The following factors can affect the solubility of the same chemical: solvent used for crystallization, residual solvent content, polymorphism, salt versus free form, degree of hydration, solvent temperature. Please use the solubility data as a reference only. Warming and sonication will facilitate dissolving. Still have questions? Please contact our Technical Support scientists.

Preparing Stock Solutions

The following data is based on the product molecular weight 460.14 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol:
TBD
In vitro protocol:
TBD
In vivo protocol:
TBD
1: Labadie H, Dyan S, Novello P, Pouteau M, Licht H. Hépatite à la difétarsone. Une deuxième observation [Diphetarsone-induced hepatitis. A second case]. Presse Med. 1992 Jun 6;21(21):996. French. PMID: 1386461. 2: Vetter D, Arpin MP, Doffoël M, Charrault A, Biour M, Bockel R. Hépatitie prolongée après la prise de difétarsone [Prolonged hepatitis after ingestion of diphetarsone]. Gastroenterol Clin Biol. 1988 Feb;12(2):173-4. French. PMID: 3366319. 3: Leary PM, Jones C, Douglas F, Boyd ST. Difetarsone in outpatient treatment of Trichuris trichiura infestation. Arch Dis Child. 1974 Jun;49(6):486-8. doi: 10.1136/adc.49.6.486. PMID: 4851370; PMCID: PMC1648795. 4: Boyce JM, Fitzgerald TC, Gregg R. Difetarsone ('Bemarsal') and other anthelminthic drugs in the treatment of Trichuris trichiura (whipworm) infestation in a subnormality hospital. Br J Psychiatry. 1974 Feb;124(579):160-5. doi: 10.1192/bjp.124.2.160. PMID: 4825661. 5: Vandepitte J, Gatti F, Krubwa F, Thienpont D. Letter: Difetarsone in the treatment of Trichuris trichiura. S Afr Med J. 1973 Nov 24;47(46):2205. PMID: 4760912. 6: Leary PM, Elsworth M, Maytham D, Jones C, Douglas F, Boyd S. Difetarsone in the treatment of Trichuris trichiura. S Afr Med J. 1973 Aug 11;47(31):1389. PMID: 4578732. 7: Rubidge CJ, O'Dowd PB, Powell SJ. Difetarsone in the treatment of Trichuris trichiura infections. S Afr Med J. 1973 Jun 16;47(23):991-2. PMID: 4714286. 8: Vandepitte J, Thienpont D. Trichuris infestations and difetarsone. Br Med J. 1972 Dec 2;4(5839):549. doi: 10.1136/bmj.4.5839.549-b. PMID: 4642803; PMCID: PMC1788733. 9: Lynch DM, Green EA, McFadzean JA, Pugh IM. Trichuris trichiura infestations in the United Kingdom and treatment with difetarsone. Br Med J. 1972 Oct 14;4(5832):73-6. doi: 10.1136/bmj.4.5832.73. PMID: 5077469; PMCID: PMC1786249.