A reduced form of folate and cofactor for thymidylate synthetase
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Folitixorin

Item No. 33967

Technical Information
Formal Name
N-[4-(3-amino-1,2,5,6,6a,7-hexahydro-1-oxoimidazo[1,5-f]pteridin-8(9H)-yl)benzoyl]-L-glutamic acid
CAS Number
3432-99-3
Synonyms
  • 5,10-Methylenetetrahydrofolic Acid
  • 5,10-methyl THF
Molecular Formula
C20H23N7O6
Formula Weight
Purity
≥75% (mixture of diastereomers)
A solid
DMSO: slightly soluble
SMILES
O=C1C2=C(NC(N)=N1)NCC3N2CN(C4=CC=C(C=C4)C(N[C@H](C(O)=O)CCC(O)=O)=O)C3
InChi Code
InChI=1S/C20H23N7O6/c21-20-24-16-15(18(31)25-20)27-9-26(8-12(27)7-22-16)11-3-1-10(2-4-11)17(30)23-13(19(32)33)5-6-14(28)29/h1-4,12-13H,5-9H2,(H,23,30)(H,28,29)(H,32,33)(H4,21,22,24,25,31)/t12?,13-/m0/s1
InChi Key
QYNUQALWYRSVHF-ABLWVSNPSA-N
Shipping & Storage Information
Storage
-80°C
Shipping
Dry ice in continental US; may vary elsewhere
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    Product Description

    Folitixorin is a reduced form of folate and cofactor for thymidylate synthetase, the enzyme that catalyzes the methylation of deoxyuridine monophosphate (dUMP) to deoxythymidine monophosphate (dTMP).1,2 It forms a ternary complex with thymidylate synthetase and fluorodeoxyuridylate (FdUMP), the active metabolite of 5-fluorouracil (Item No. 14416), that inhibits thymidylate synthetase activity and DNA synthesis.3,2 Folitixorin has synergistic or additive cytotoxic effects against LS 174 or HT-29 human colon cancer cells, respectively, when used in combination with 5-fluorouracil.4 In vivo, folitixorin (0.6 mg/animal) increases survival and reduces tumor growth in an HT-29 mouse xenograft model when administered in combination with 5-fluorouracil.5

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Zarow, C., Pellino, A.M., and Danenberg, P.V. Large-scale and small-scale methods for the preparation of 5,10-methylenetetrahydrofolate. Prep. Biochem. 12(5), 381-393 (1982).

    2. Shirasaka, T., Shimamoto, Y., Ohshimo, H., et alMetabolic basis of the synergistic antitumor activities of 5-fluorouracil and cisplatin in rodent tumor models in vivo. Cancer Chemother. Pharmacol. 32(3), 167-172 (1993).

    3. Patel, K., Yerram, S.R., Azad, N.A., et alA thymidylate synthase ternary complex-specific antibody, FTS, permits functional monitoring of fluoropyrimidines dosing. Oncotarget 3(7), 678-685 (2012).

    4. Bjelogrlić, S.K., Srdić, T., and Radulović, S. Comparison between cofactor and leucovorin activity applied in combination with 5-fluorouracil against two human colon cancer cell lines. J. BUON 12(1), 71-76 (2007).

    5. Cantwell, M.J., Spears, C.P., and Robbiins, J.M. Antitumor activity of combination 5,10-methylenetetrahydrofolate, 5-fluorouracil, and anti-vascular endothelial growth factor against human colorectal HT-29 tumors in nude mice. J. Clin. Oncol. 22(14_suppl), 3768 (2004).