Gibberellic Acid A3; Gbberellin A3; GA3;

(3S,3aR,4S,4aS,7S,9aR,9bR,12S)-7,12-dihydroxy-3-methyl-6-methylene-2-oxoperhydro-4a,7-methano-9b,3-propeno[1,2-b]furan-4-carboxylic acid

C₁₉H₂₂O₆

Formar Crystallene sólido.

Punto de fusion 223-225℃ (decomp.).

Solubilidad en water 5 g/l (room temperature). Soluble en methanol, ethanol, acetone, and aqueous alkalis; slightly soluble en diethyl ether and ethyl acetate. ensoluble en chloroFormar. Potassium, sodium, and ammonium salts: Readily soluble en water (potassium salt 50 g/l).

Agudo agudo oral LD50 para rats and mice >15 000 mg/kg.

Piel y ojos agudos percutaneous LD50 para rats >2000 mg/kg.

Non-irritating to skin and eyes.

Inhalación No ill-effect on rats subjected to 400 mg/l para 2 h/d para 21 d. NOEL (90 d) para rats and dogs >1000 mg/kg diet (6 d/w).

Has a variety of applications, e.g. to improve fruit setting of clementines and pears (especially William pears); to loosen and elongate clusters and increase berry size in grapes; to control fruit maturity by delaying development of the yellow colour in lemons; to reduce rind stain and retard rind ageing in navel oranges; to counteract the effects of cherry yellows virus diseases in sour cherries; to produce uniform seedling growth in rice; to promote elongation of winter celery crop; to induce uniform bolting and increase seed production in lettuce for seed; to break dormancy and stimulate sprouting in seed potatoes; to extend the picking season by hastening maturity in artichokes; to increase the yield in forced rhubarb; to increase the malting quality of barley; to produce brighter-coloured, firmer fruit, and to increase the size of sweet cherries; to increase yields and aid harvesting of hops; to reduce internal browning and increase yields of Italian prunes; to increase fruit set and yields of tangelos and tangerines; to improve fruit setting in blueberries; to advance flowering and increase the yield of strawberries; and also a variety of applications on ornamentals.

Descripción: White to pale yellow crystalline powder, libre de materia extraña visible;

Contenido de ingrediente activo(w/w): ≥90%;

Pérdida por secado(w/w): ≤1.0%;

Specific Optical Rotation: ≥+75°