1 K6T 5-[(3-aminophenyl)amino]-4-phenyl-thiophene-2-carboximidamide 1.000 2 K6Z 4-phenyl-5-phenylazanyl-thiophene-2-carboximidamide 0.955 3 TG9 5-(cyclohexylamino)-4-phenyl-thiophene-2-carboximidamide 0.955