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Gibberellic Acid

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Chemical Name: Gibberellin; Gibberellic acid
2,4a,7-Trihydroxy-1-methyl-8-methylenegibb-3-ene-1,10-dicarboxylic acid1,4a-lactone2,4a,7-Trihydroxy-1-methyl-8-methylenegibb-3-ene-1,10-dicarboxylic acid 1,4a-lactone
Molecular formula: C19H22O6
Molecular weight: 346.37
CAS No.: 77-06-5
EINECS: 201-001-0
Properties
White crystal powder.
A widely-used plant growth regulator.
One of the five main plant hormones, primarily used to promote the fruition of the melons and fruit plants such as pineapple, orange and grape, and to promote the formation of Seedless fruits.
Melting point is 223-225℃.
Easily dissolve in ethanol, acetone. Slightly dissolve in water (5g/L) or chloroform.
High stable in acidic solution or litmusless solution.
Rapidly break down in alkali solution.
Rapidly decomposed by heat.
Dry gibberellic acid is stable at room temperature, but slowly undergoes hydrolysis in aqueous or aqueous-alcoholic solutions, DT50(20℃) c. 14d(pH 3-4), 14d(pH7). In alkalis, undergoes a rearrangement to less biologically-active compounds. Decomposed by heat. pKa 4.0

Items

Specifications
Appearance

white crystal powder
Purity of GA3

90.0% min
Loss on drying

1.0%max
Specific Rotation [α]D20

+75° min

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