Gibberellin A4 with Gibberellin A7

(3S,3aR,4S,4aR,7R,9aR,9bR,12S)-12-hydroxy-3-methyl-6-methylene-2-oxoperhydro-4a,7-methano-3,9b-propanoazuleno[1,2-b]furan-4-carboxylic acid +(3S,3aR,4S,4aR,7R,9aR,9bR,12S)-12-hydroxy-3-methyl-6-methylene-2-oxoperhydro-4a,7-methano-9b,3-propenoazuleno[1,2-b]furan-4-carboxylic acid

C₁₉H₂₄O₅+C₁₉H₂₂O₅

Melting point 201-205ºC.

Density 1.001 g/mL(20°C).

Solubility In water 10.3 g/L （20℃); Soluble in ethanol , propylene glycol , most of the volatile oil , insoluble in glycerin and mineral oil.

Acute oral LD50 for rats >5000 mg/kg.

Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg.

Mild eye irritant, not a skin irritant. Mild skin sensitiser.

Plant growth regulator used to reduce russetting in apples, increase fruit set in pears, and germination and yield in celery.

Description: White crystalline powder, free from visible extraneous matter;

Content of Gibberellic Acid GA4+GA7(w/w): ≥90%;

GA4/GA7: ≤2:1;

Loss on Drying(w/w): ≤2.0%;

pH Value: 4~ 6;

Acetone Insoluble Material(w/w): ≤0.5%;

Acidity (as H₂SO₄)(w/w): ≤0.5%