Antiauxins, which competitively inhibit the actions of auxins, have been discovered through biological studies on synthetic auxins and related compounds. Flavonoids do not affect the tropic responses, but bind to the NPA receptor. Quercetin binds the most strongly with a KD = 1µM. Morphactins have morphological effects not shared by the phytotropins and may interact with the NPA receptor in a different way. 2,3,5-Triiodobenzoic Acid (TIBA) is unique. It can act as an auxin, anti-auxin and auxin transport inhibitor.

 

ANTIAUXINS AND AUXIN ANTAGONISTS

AUXINOLE [α-[2-(2,4-Dimethylphenyl)-2-oxoethyl]-1H-indole-3-acetic acid]

MW 321.38; crystalline; purity > 98% (HPLC)
CAS: 86445-22-9; C20H19NO3
AUXINOLE
017 7301 1 mg
017 7302 2 mg
017 7303 5 mg

2-(2,4-DICHLOROPHENOXY) PROPIONIC ACID (2,4-DP)

MW 235.07; crystalline; purity > 98% (HPLC)
CAS: 120-36-5; C9H8Cl2O3
2-(2,4-DICHLOROPHENOXY) PROPIONIC ACID (2,4DP)
017 2981 1 g
017 2982 5 g
017 2983 25 g

2-(4-CHLOROPHENOXY) ISOBUTYRIC ACID (PCIB)

MW 214.65; crystalline; purity > 97% (HPLC)
CAS: 882-09-7; C10H11ClO3
2-(4-chlorophenoxy)isobutyric ACID (PCIB)
017 3011 250 mg
017 3012 1 g
017 3013 5 g

2-INDOL-3-YL-4OXO-4-PHENYLBUTANOIC ACID (PEO-IAA) [α-(2-Oxo-2-phenylethyl)-1H-Indole-3-acetic acid]

MW 293.33; crystalline; purity > 98% (HPLC)
CAS: 6266-66-6; C18H15NO3
AUXINOLE
017 7291 1 mg
017 7292 2 mg
017 7293 5 mg