Gibberellic acid

Gibberellic acid

赤霉素

(3S,3aS,4S,4aS,7S,9aR,9bR,12S)-7,12-dihydroxy-3-methyl-6-methylene-2-oxoperhydro-4a,7-methano-9b,3-propenoazuleno[1,2-b]furan-4-carboxylic acid
or
(3S,3aR,4S,4aS,6S,8aR,8bR,11S)-6,11-dihydroxy-3-methyl-12-methylene-2-oxo-4a,6-ethano-3,8b-prop-1-enoperhydroindeno[1,2-b]furan-4-carboxylic acid

(1α,2β,4aα,4bβ,10β)-2,4a,7-trihydroxy-1-methyl-8-methylenegibb-3-ene-1,10-dicarboxylic acid 1,4a-lactone

77-06-5

C₁₉H₂₂O₆

Plant growth regulators > Gibberellins

Plant Growth Regulator

Thymo+Gibberellic acid A4,A7
Indole-3-butyric acid+Gibberellic acid+Cytokinin
Gibberellic acid+Thidiazuron
Gibberellic acid(GA3)+(+)-abscisic acid
Gibberellic acid A4,A7+Thidiazuron
Brassinolide+Gibberellic acid A4,A7
6-benzylamino-purine+Gibberellic acid(GA3)
14-hydroxylated brassinosteroid+Gibberellic acid+Indol-3-ylacetic acid
14-hydroxylated brassinosteroid+Gibberellic acid
Tablets, soluble granules, liquid concentrate.?
Premix Parters: acetochlor atrazine; amitrole ammonium thiocyanate; amitrole terbuthylazine; atrazine; atrazine S-metolachlor; butafenacil; carfentrazone-ethyl; 2,4-D; dicamba; diquat dibromide; diuron; diuron simazine; fluometuron prometryn; imazapic; imazapyr; imazaquin; imazethapyr; MCPA; mesotrione S-metolachlor; S-metolachlor; metsulfuron-methyl; oxyfluorfen; prodiamine; simazine; terbuthylazine;

Molecular weight:346.4g/mol; Physical form:Crystalline solid. Melting point:223-225℃( decomp.); pKa:4.0; Solubility:In water 5 g/l (room temperature). Soluble in methanol, ethanol, acetone, and aqueous alkalis; slightly soluble in diethyl ether and ethyl acetate. Insoluble in chloroform. Potassium, sodium, and ammonium salts: Readily soluble in water (potassium salt 50; Stability:Dry gibberellic acid is stable at room temperature, but slowly undergoes hydrolysis in aqueous or aqueous-alcoholic solutions, DT50 (20℃) c. 14 d ( pH 3-4), 14 d ( pH 7).

Oral:Acute oral LD₅₀ for rats and mice >15 000 mg/ kg. Percutaneous:Non-irritating to skin and eyes. Inhalation:No ill-effect on rats subjected to 400 mg/l for 2 h/d for 21 d.

Slowly hydrolyzed by water and rapidly decomposed by heat or chlorine

Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)