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

MedKoo CAT#: 206038

CAS#: 70-00-8

Description: Trifluridine (also called trifluorothymidine or TFT) is an anti-herpesvirus antiviral drug, used primarily on the eye. It was sold under the trade name, Viroptic, by Glaxo Wellcome, now merged into GlaxoSmithKline. The brand is now owned by Monarch Pharmaceuticals, which is wholly owned by King Pharmaceuticals. It is a nucleoside analogue, a modified form of deoxyuridine, similar enough to be incorporated into viral DNA replication, but the -CF3 group added to the uracil component blocks base pairing. It is a component of the experimental anti-cancer drug TAS-102.

Price and Availability


USD 150
USD 2950

USD 550
USD 3950

USD 950
USD 8950

Trifluridine, purity > 98%, is in stock. The same day shipping out after order is received. Note: the estimated shipping out time for order > 10 g may be 2 weeks.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 206038
Name: Trifluridine
CAS#: 70-00-8
Chemical Formula: C10H11F3N2O5
Exact Mass: 296.06201
Molecular Weight: 296.2
Elemental Analysis: C, 40.55; H, 3.74; F, 19.24; N, 9.46; O, 27.01

Synonym: Trifluridine; FTD ; 5Trifluorothymidine; NSC 529182; NSC 75520; Trifluorothymidine; Viroptic. Trifluorothymidine 2-Deoxy-5-trifluoromethyluridine; Trifluorothymine deoxyriboside.

IUPAC/Chemical Name: 1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-5-(trifluoromethyl)pyrimidine-2,4(1H,3H)-dione.


InChi Code: InChI=1S/C10H11F3N2O5/c11-10(12,13)4-2-15(9(19)14-8(4)18)7-1-5(17)6(3-16)20-7/h2,5-7,16-17H,1,3H2,(H,14,18,19)/t5-,6+,7+/m0/s1

SMILES Code: O=C1NC(C(C(F)(F)F)=CN1[C@@H]2O[C@H](CO)[C@@H](O)C2)=O

Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Safety Data Sheet (MSDS):

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).

Soluble in DMSO, not in water

Shelf Life:
>2 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).

Harmonized System Code:

Additional Information



1: Peters GJ, Bijnsdorp IV. TAS-102: more than an antimetabolite. Lancet Oncol. 2012 Dec;13(12):e518-9. doi: 10.1016/S1470-2045(12)70426-6. PubMed PMID: 23182191.

2: Yoshino T, Mizunuma N, Yamazaki K, Nishina T, Komatsu Y, Baba H, Tsuji A, Yamaguchi K, Muro K, Sugimoto N, Tsuji Y, Moriwaki T, Esaki T, Hamada C, Tanase T, Ohtsu A. TAS-102 monotherapy for pretreated metastatic colorectal cancer: a double-blind, randomised, placebo-controlled phase 2 trial. Lancet Oncol. 2012 Oct;13(10):993-1001. doi: 10.1016/S1470-2045(12)70345-5. Epub 2012 Aug 28. PubMed PMID: 22951287.

3: Sobrero A. TAS-102 in refractory colorectal cancer: caution is needed. Lancet Oncol. 2012 Oct;13(10):959-61. doi: 10.1016/S1470-2045(12)70376-5. Epub 2012 Aug 28. PubMed PMID: 22951286.

4: Doi T, Ohtsu A, Yoshino T, Boku N, Onozawa Y, Fukutomi A, Hironaka S, Koizumi W, Sasaki T. Phase I study of TAS-102 treatment in Japanese patients with advanced solid tumours. Br J Cancer. 2012 Jul 24;107(3):429-34. doi: 10.1038/bjc.2012.274. Epub 2012 Jun 26. PubMed PMID: 22735906; PubMed Central PMCID: PMC3405214.

5: Siddique SS, Gonzalez-Gonzalez LA, Amorese L, Shaikh M, Foster S. Herpes keratitis in a patient undergoing treatment with topical mitomycin C. Cornea. 2011 Apr;30(4):466-7. doi: 10.1097/ICO.0b013e3181f7f345. PubMed PMID: 21099403.

6: Shintani M, Urano M, Takakuwa Y, Kuroda M, Kamoshida S. Immunohistochemical characterization of pyrimidine synthetic enzymes, thymidine kinase-1 and thymidylate synthase, in various types of cancer. Oncol Rep. 2010 May;23(5):1345-50. PubMed PMID: 20372850.

7: Temmink OH, Bijnsdorp IV, Prins HJ, Losekoot N, Adema AD, Smid K, Honeywell RJ, Ylstra B, Eijk PP, Fukushima M, Peters GJ. Trifluorothymidine resistance is associated with decreased thymidine kinase and equilibrative nucleoside transporter expression or increased secretory phospholipase A2. Mol Cancer Ther. 2010 Apr;9(4):1047-57. doi: 10.1158/1535-7163.MCT-09-0932. Epub 2010 Apr 6. PubMed PMID: 20371715.

8: Bijnsdorp IV, Kruyt FA, Fukushima M, Smid K, Gokoel S, Peters GJ. Molecular mechanism underlying the synergistic interaction between trifluorothymidine and the epidermal growth factor receptor inhibitor erlotinib in human colorectal cancer cell lines. Cancer Sci. 2010 Feb;101(2):440-7. doi: 10.1111/j.1349-7006.2009.01375.x. Epub 2009 Sep 29. PubMed PMID: 19886911.

9: Bijnsdorp IV, Peters GJ, Temmink OH, Fukushima M, Kruyt FA. Differential activation of cell death and autophagy results in an increased cytotoxic potential for trifluorothymidine compared to 5-fluorouracil in colon cancer cells. Int J Cancer. 2010 May 15;126(10):2457-68. doi: 10.1002/ijc.24943. PubMed PMID: 19816940.

10: Bijnsdorp IV, Kruyt FA, Gokoel S, Fukushima M, Peters GJ. Synergistic interaction between trifluorothymidine and docetaxel is sequence dependent. Cancer Sci. 2008 Nov;99(11):2302-8. doi: 10.1111/j.1349-7006.2008.00963.x. Epub 2008 Oct 18. PubMed PMID: 18957056.

11: Overman MJ, Kopetz S, Varadhachary G, Fukushima M, Kuwata K, Mita A, Wolff RA, Hoff P, Xiong H, Abbruzzese JL. Phase I clinical study of three times a day oral administration of TAS-102 in patients with solid tumors. Cancer Invest. 2008 Oct;26(8):794-9. doi: 10.1080/07357900802087242. PubMed PMID: 18798063.

12: Kumar V, Malhotra SV. Synthesis of nucleoside-based antiviral drugs in ionic liquids. Bioorg Med Chem Lett. 2008 Oct 15;18(20):5640-2. doi: 10.1016/j.bmcl.2008.08.090. Epub 2008 Aug 29. PubMed PMID: 18796352.

13: Overman MJ, Varadhachary G, Kopetz S, Thomas MB, Fukushima M, Kuwata K, Mita A, Wolff RA, Hoff PM, Xiong H, Abbruzzese JL. Phase 1 study of TAS-102 administered once daily on a 5-day-per-week schedule in patients with solid tumors. Invest New Drugs. 2008 Oct;26(5):445-54. doi: 10.1007/s10637-008-9142-3. Epub 2008 Jun 5. PubMed PMID: 18528634.

14: Temmink OH, Emura T, de Bruin M, Fukushima M, Peters GJ. Therapeutic potential of the dual-targeted TAS-102 formulation in the treatment of gastrointestinal malignancies. Cancer Sci. 2007 Jun;98(6):779-89. Epub 2007 Apr 18. Review. PubMed PMID: 17441963.

15: Temmink OH, Hoebe EK, van der Born K, Ackland SP, Fukushima M, Peters GJ. Mechanism of trifluorothymidine potentiation of oxaliplatin-induced cytotoxicity to colorectal cancer cells. Br J Cancer. 2007 Jan 29;96(2):231-40. PubMed PMID: 17242697; PubMed Central PMCID: PMC2360012.

16: Temmink OH, Prins HJ, van Gelderop E, Peters GJ. The Hollow Fibre Assay as a model for in vivo pharmacodynamics of fluoropyrimidines in colon cancer cells. Br J Cancer. 2007 Jan 15;96(1):61-6. Epub 2006 Dec 19. PubMed PMID: 17179993; PubMed Central PMCID: PMC2360204.

17: Temmink OH, Hoebe EK, Fukushima M, Peters GJ. Irinotecan-induced cytotoxicity to colon cancer cells in vitro is stimulated by pre-incubation with trifluorothymidine. Eur J Cancer. 2007 Jan;43(1):175-83. Epub 2006 Oct 16. PubMed PMID: 17049227.

18: Hong DS, Abbruzzese JL, Bogaard K, Lassere Y, Fukushima M, Mita A, Kuwata K, Hoff PM. Phase I study to determine the safety and pharmacokinetics of oral administration of TAS-102 in patients with solid tumors. Cancer. 2006 Sep 15;107(6):1383-90. PubMed PMID: 16902987.

19: Cleverley J. American Society of Clinical Oncology--42nd annual meeting. Poster presentations on leukemia and cytotoxic chemotherapy. 2-6 June 2006, Atlanta, GA, USA. IDrugs. 2006 Aug;9(8):520-2. PubMed PMID: 16871453.

20: Tan HH, Goh CL. Viral infections affecting the skin in organ transplant recipients: epidemiology and current management strategies. Am J Clin Dermatol. 2006;7(1):13-29. Review. PubMed PMID: 16489840.