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MedKoo Cat#: 126060 | Name: OXI-4503 dipotassium salt

Description:

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

Oxi0-4503 (now known as combretastatin A1 phosphate), a diphosphate prodrug of combretastatin A1. It is a second-generation, dual-mechanism vascular disrupting agent from the combretastatin family.

Chemical Structure

OXI-4503 dipotassium salt
OXI-4503 dipotassium salt
CAS#1014615-46-3 (potassium)

Theoretical Analysis

MedKoo Cat#: 126060

Name: OXI-4503 dipotassium salt

CAS#: 1014615-46-3 (potassium)

Chemical Formula: C18H20K2O12P2

Exact Mass: 567.9704

Molecular Weight: 568.49

Elemental Analysis: C, 38.03; H, 3.55; K, 13.76; O, 33.77; P, 10.90

Price and Availability

This product is currently not in stock but may be available through custom synthesis. To ensure cost efficiency, the minimum order quantity is 1 gram. The estimated lead time is 2 to 4 months, with pricing dependent on the complexity of the synthesis (typically high for intricate chemistries). Quotes for quantities below 1 gram will not be provided. To request a quote, please click the button below. Note: If this product becomes available in stock in the future, pricing will be listed accordingly.
Bulk Inquiry
Related CAS #
288847-35-8 (free acid) 288847-34-7 (sodium) 1014615-46-3 (potassium)
Synonym
OXI-4503 dipotassium salt; oxi-4503 dipotassium; Combretastatin A-1 bis(phosphate) dipotassium salt; OXI-4503; OXI 4503; OXI4503
IUPAC/Chemical Name
potassium (Z)-3-methoxy-6-(3,4,5-trimethoxystyryl)-1,2-phenylene bis(hydrogen phosphate)
InChi Key
IQYUGENRXZHYER-XNOMRPDFSA-L
InChi Code
InChI=1S/C18H22O12P2.2K/c1-25-13-8-7-12(16(29-31(19,20)21)18(13)30-32(22,23)24)6-5-11-9-14(26-2)17(28-4)15(10-11)27-3;;/h5-10H,1-4H3,(H2,19,20,21)(H2,22,23,24);;/q;2*+1/p-2/b6-5-;;
SMILES Code
[K+].[K+].COC1=CC=C(\C=C/C2=CC(OC)=C(OC)C(OC)=C2)C(OP(O)([O-])=O)=C1OP(O)([O-])=O
Appearance
To be determined
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
To be determined
Shelf Life
>2 years if stored properly
Drug Formulation
To be determined
Stock Solution Storage
0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code
2934.99.9001
More Info

Preparing Stock Solutions

The following data is based on the product molecular weight 568.49 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
1: Lee JA, Biel NM, Kozikowski RT, Siemann DW, Sorg BS. In vivo spectral and fluorescence microscopy comparison of microvascular function after treatment with OXi4503, Sunitinib and their combination in Caki-2 tumors. Biomed Opt Express. 2014 May 28;5(6):1965-79. doi: 10.1364/BOE.5.001965. eCollection 2014 Jun 1. PubMed PMID: 24940553; PubMed Central PMCID: PMC4052922. 2: Fifis T, Nguyen L, Malcontenti-Wilson C, Chan LS, Nunes Costa PL, Daruwalla J, Nikfarjam M, Muralidharan V, Waltham M, Thompson EW, Christophi C. Treatment with the vascular disruptive agent OXi4503 induces an immediate and widespread epithelial to mesenchymal transition in the surviving tumor. Cancer Med. 2013 Oct;2(5):595-610. doi: 10.1002/cam4.109. Epub 2013 Aug 18. PubMed PMID: 24403226; PubMed Central PMCID: PMC3892792. 3: Stratford MR, Folkes LK. Quantitative determination of the anticancer prodrug combretastatin A1 phosphate (OXi4503, CA1P), the active CA1 and its glucuronide metabolites in human urine and of CA1 in plasma by HPLC with mass spectrometric detection. J Chromatogr B Analyt Technol Biomed Life Sci. 2012 Jun 1;898:1-6. doi: 10.1016/j.jchromb.2012.03.040. Epub 2012 Apr 24. PubMed PMID: 22578514. 4: Cummings J, Zweifel M, Smith N, Ross P, Peters J, Rustin G, Price P, Middleton MR, Ward T, Dive C. Evaluation of cell death mechanisms induced by the vascular disrupting agent OXi4503 during a phase I clinical trial. Br J Cancer. 2012 May 22;106(11):1766-71. doi: 10.1038/bjc.2012.165. Epub 2012 Apr 26. PubMed PMID: 22538971; PubMed Central PMCID: PMC3364117. 5: Patterson DM, Zweifel M, Middleton MR, Price PM, Folkes LK, Stratford MR, Ross P, Halford S, Peters J, Balkissoon J, Chaplin DJ, Padhani AR, Rustin GJ. Phase I clinical and pharmacokinetic evaluation of the vascular-disrupting agent OXi4503 in patients with advanced solid tumors. Clin Cancer Res. 2012 Mar 1;18(5):1415-25. doi: 10.1158/1078-0432.CCR-11-2414. Epub 2012 Jan 10. PubMed PMID: 22235096. 6: Stratford MR, Folkes LK. Validation of a method for the determination of the anticancer agent Combretastatin A1 phosphate (CA1P, OXi4503) in human plasma by HPLC with post-column photolysis and fluorescence detection. J Chromatogr B Analyt Technol Biomed Life Sci. 2011 Sep 1;879(25):2673-6. doi: 10.1016/j.jchromb.2011.07.014. Epub 2011 Jul 18. PubMed PMID: 21820978. 7: Rice L, Pampo C, Lepler S, Rojiani AM, Siemann DW. Support of a free radical mechanism for enhanced antitumor efficacy of the microtubule disruptor OXi4503. Microvasc Res. 2011 Jan;81(1):44-51. doi: 10.1016/j.mvr.2010.10.003. Epub 2010 Oct 23. PubMed PMID: 20974154; PubMed Central PMCID: PMC3021177. 8: Wankhede M, Dedeugd C, Siemann DW, Sorg BS. In vivo functional differences in microvascular response of 4T1 and Caki-1 tumors after treatment with OXi4503. Oncol Rep. 2010 Mar;23(3):685-92. PubMed PMID: 20127007; PubMed Central PMCID: PMC2978044. 9: Siemann DW, Shi W. Dual targeting of tumor vasculature: combining Avastin and vascular disrupting agents (CA4P or OXi4503). Anticancer Res. 2008 Jul-Aug;28(4B):2027-31. PubMed PMID: 18751370; PubMed Central PMCID: PMC2788501. 10: Chan LS, Malcontenti-Wilson C, Muralidharan V, Christophi C. Alterations in vascular architecture and permeability following OXi4503 treatment. Anticancer Drugs. 2008 Jan;19(1):17-22. PubMed PMID: 18043126.