≥98% (HPLC)

1,6-Dimethyl-pyrimido[5,4-e]-1,2,4-triazine-5,7(1H,6H)-dione, Xanthothricin, Toxoflavin
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level


≥98% (HPLC)




white to light brown


H2O: 10 mg/mL, clear

storage temp.


SMILES string




InChI key



5, 25 mg in glass bottle

Biochem/physiol Actions

PKF118-310 is an antagonist of the Tcf4/b-catenin signaling. The compound disrupts the Tcf4/b-catenin complex and inhibits expression of Tcf4 responsive genes. PKF118-310 inhibits expression of survivin and induces apoptosis in HCC, colon tumor and lymphocytic leukemia cell lines.


Skull and crossbones

Signal Word


Hazard Statements


UN 2811 6.1 / PGIII

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Jinwoo Kim et al.
Molecular microbiology, 54(4), 921-934 (2004-11-04)
Burkholderia glumae BGR1 produces a broad-host range phytotoxin, called toxoflavin, which is a key pathogenicity factor in rice grain rot and wilt in many field crops. Our molecular and genetic analyses of toxoflavin-deficient mutants demonstrated that gene clusters for toxoflavin...
Ji-Eun Choi et al.
PloS one, 13(1), e0183893-e0183893 (2018-01-03)
Toxoflavin, a 7-azapteridine phytotoxin produced by the bacterial pathogens such as Burkholderia glumae and Burkholderia gladioli, has been known as one of the key virulence factors in crop diseases. Because the toxoflavin had an antibacterial activity, a metagenomic E. coli...
Phyllis S Y Chong et al.
Oncogene, 38(9), 1508-1519 (2018-10-12)
Aberrant activation of Wnt/β-catenin signaling pathway is essential for the development of AML; however, the mechanistic basis for this dysregulation is unclear. PRL-3 is an oncogenic phosphatase implicated in the development of LSCs. Here, we identified Leo1 as a direct...
Boknam Jung et al.
Nature communications, 9(1), 31-31 (2018-01-04)
Bacterial-fungal interactions are widely found in distinct environments and contribute to ecosystem processes. Previous studies of these interactions have mostly been performed in soil, and only limited studies of aerial plant tissues have been conducted. Here we show that a...
T Nagamatsu et al.
Chemical & pharmaceutical bulletin, 41(2), 362-368 (1993-02-01)
6-Phenyl analogs of toxoflavin (1-methyl-6-phenylpyrimido[5,4-e]-1,2,4-triazine-5,7(1H,6H)-diones ) (7a--f) and their 4-oxides (8a-f) were synthesized by nitrosative or nitrative cyclization of the aldehyde hydrazones (6a-f) of 6-(1-methylhydrazino)-3-phenyluracil (5). Both sets of compounds, 7a-f and 8a-f, gave the corresponding 1-demethyl derivatives (10a-f) upon...
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