Home>>Signaling Pathways>> Others>> Thymidine phosphorylase>>KIN-59

KIN-59 (Synonyms: 5’-O-Tritylinosine)

Catalog No.GC16460

thymidine phosphorylase (Tpase) inhibitor

Products are for research use only. Not for human use. We do not sell to patients.

KIN-59 Chemical Structure

Cas No.:4152-77-6

Size Price Stock Qty
In stock
In stock
In stock

Tel:(909) 407-4943 Email: sales@glpbio.com

Customer Reviews

Based on customer reviews.

  • GlpBio Citations

    GlpBio Citations

  • Bioactive Compounds Premium Provider

    Bioactive Compounds Premium Provider

Sample solution is provided at 25 µL, 10mM.

Product Documents

Quality Control & SDS

View current batch:


KIN59, the purine riboside derivative, is a noncompetitive inhibitor against human and bacterial recombinant TPase [1]. TPase is an enzyme with an important role in the pyrimidine nucleoside salvage pathway and the inactivation of cytotoxic pyrimidine nucleoside analogues. TPase also recognizes several nucleoside analogues clinically used as antiviral or anti-tumor agents [1]. Overexpression of TPase has been observed in many solid tumors [1].

In vitro: In the purified E. coli and human TPase, KIN59 inhibited the E. coli and human TPases in a reversible or irreversible manner, with the IC50 of 44 ± 3 and 67 ± 20 M, respectively. KIN59 was a potent inhibitor of E. coli TPase with Ki values of 39 M against dThd and 146 M against phosphate, resulting in Ki /Km values of 0.039 and 0.10, respectively. KIN59 induced the formation of an avascular area around and inside the sponge. In the CAM assay, KIN59 completely prevented TPase-stimulated blood vessel formation, without any visible side effects [1]. KIN59 was active against TPase-induced angiogenesis in the chorioallantoic membrane assay [1].

[1] Liekens S, Hernández A I, Ribatti D, et al.  The nucleoside derivative 5′-O-trityl-inosine (KIN59) suppresses thymidine phosphorylase-triggered angiogenesis via a noncompetitive mechanism of action[J]. Journal of Biological Chemistry, 2004, 279(28): 29598-29605.

Chemical Properties

Cas No. 4152-77-6 SDF
Synonyms 5’-O-Tritylinosine
Chemical Name 5'-O-(triphenylmethyl)-inosine
Canonical SMILES O[C@H]1[C@@H](O)[C@H](N2C=NC3=C2N=CNC3=O)O[C@@H]1COC(C4=CC=CC=C4)(C5=CC=CC=C5)C6=CC=CC=C6
Formula C29H26N4O5 M.Wt 510.5
Solubility ≤0.3mg/ml in ethanol;16mg/ml in DMSO;5mg/ml in dimethyl formamide Storage Store at -20°C
General tips Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month.
To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.
  • Molarity Calculator

  • Dilution Calculator

**When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / CoA (available online).


In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

mg/kg g μL

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO % % Tween 80 % ddH2O

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
3. All of the above co-solvents are available for purchase on the GlpBio website.


Review for KIN-59

Average Rating: 5 ★★★★★ (Based on Reviews and 9 reference(s) in Google Scholar.)

5 Star
4 Star
3 Star
2 Star
1 Star
Review for KIN-59

GLPBIO products are for RESEARCH USE ONLY. Please make sure your review or question is research based.

Required fields are marked with *

You may receive emails regarding this submission. Any emails will include the ability to opt-out of future communications.