Synonyms: NSC95464;AC1L66SO;3-[(3|A,5|A)-cholestan-3-yl]-1-(2-fluoroethyl)-1-nitrosourea;AR-1F0548;NSC-95464;Urea, 3-(5.alpha.-cholestan-3.alpha.-yl)-1-(2-fluoroethyl)-1-nitroso;3-[(3R,5S,8R,9S,10S,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl]-1-(2-fluoroethyl)-1-nitrosourea