Weintraub, Robert L. published the artcileRelation between molecular structure and physiological activity of plant-growth regulators. II. Formative activity of phenoxyacetic acids, SDS of cas: 163839-73-4, the publication is Journal of Agricultural and Food Chemistry (1954), 996-9, database is CAplus.
cf. C.A. 46, 5773g; 47, 6593a. The formative activities of approx. 145 ring-substituted phenoxyacetic acids have been measured by the bean-leaf repression technique. The presence of a halogen atom at position 4 appears to be a requisite for high activity. The order of effectiveness of the halogens is Cl > F > Br > I. Further enhancement of activity may ensue through introduction of an addnl. halogen or Me substituent at position 2.
Journal of Agricultural and Food Chemistry published new progress about 163839-73-4. 163839-73-4 belongs to catalysis-chemistry, auxiliary class Trifluoromethyl,Fluoride,Carboxylic acid,Benzene,Ether, name is 2-(4-(Trifluoromethyl)phenoxy)acetic acid, and the molecular formula is C13H10O2, SDS of cas: 163839-73-4.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia