6555. Ninopterin

Nomenclature

CAS number: 2179-16-0
N-[4-[[1-(2-Amino-1,4-dihydro-4-oxo-6-pteridinyl)ethyl]amino]benzoyl]-l-glutamic acid; 9-methylpteroylglutamic acid; 9-methylfolic acid; Bremfol.
C20H21N7O6; mol wt 455.42.
C 52.75%, H 4.65%, N 21.53%, O 21.08%.

Description and references

Folic acid analog. Prepn: Hultquist et al., J. Am. Chem. Soc. 71, 619 (1949); Hultquist, Smith, GB 667098 (1952 to Am. Cyanamid). Clinical study in neoplastic diseases: J. C. Wright et al., J. Natl. Med. Assoc. 43, 211 (1951). In vitro evaluation as folic acid antagonist: S. Waxman et al., Chemotherapy (Basel) 28, 402 (1982).

Chemical structure

Properties

uv max in 0.1N NaOH: 255, 283, 365 nm (ε 26, 30, 8 × 103); in 0.1N HCl: 297 nm (ε 18 × 103).

Therapeutic Category

Experimental antineoplastic.