G7645 Sigma-Aldrich

Gibberellic acid

BioReagent, suitable for plant cell culture, ≥90% gibberellin A3 basis (of total gibberellins.)

Synonym: GA3, Gibberellin A3

  • CAS Number 77-06-5

  • Empirical Formula (Hill Notation) C19H22O6

  • Molecular Weight 346.37

  •  Beilstein/REAXYS Number 54346

  •  EC Number 201-001-0

  •  MDL number MFCD00079329

  •  PubChem Substance ID 24895317

  •  NACRES NA.72



Related Categories Allium sativum (Garlic), Cell Biology, Miscellaneous Plant Growth Regulators, Molecular Biology, Nutrition Research,
Quality Level   200
product line   BioReagent
assay   ≥90% gibberellin A3 basis (of total gibberellins.)
application(s)   cell culture | plant: suitable
Featured Industry   Agriculture
SMILES string   C[C@]12[C@@H](O)C=C[C@@]3(OC1=O)[C@@H]4CC[C@]5(O)C[C@]4(CC5=C)[C@H]([C@H]23)C(O)=O
InChI   1S/C19H22O6/c1-9-7-17-8-18(9,24)5-3-10(17)19-6-4-11(20)16(2,15(23)25-19)13(19)12(17)14(21)22/h4,6,10-13,20,24H,1,3,5,7-8H2,2H3,(H,21,22)/t10-,11+,12-,13-,16-,17+,18+,19-/m1/s1


General description

Gibberellic acid is a tetracyclic diterpenoid compound, which is synthesized by terpenoid pathway in chloroplasts, cytoplasm, plastid, and endoplasmic reticulum.

Gibberellic acid is an endogenous plant growth regulator


Gibberellic acid has been used as a supplement in Murashige and Skoog media (MS) for treating young leaves of hybrid poplar to follow MYB transcription factor PtrMYB012 expression and in vitro peas seed germination. It has also been used in gibberellic acid (GA)-sensitivity assay in wheat seeds and to promote seed germination in Arabidopsis seeds.


1 g in glass bottle

Biochem/physiol Actions

Gibberellic acids (GA) are important plant growth hormones that promote plant cell growth and elongation. Gibberellins promote rapid stem and root growth, induce mitotic division and initiate (break dormancy) and increase seed germination rates. The gibberellins are also involved in processes such as gravitropism and flowering.

Phytohormone that controls important aspects of plant growth: germination, elongation, and flowering. The effects are mediated by inducing degradation of the DELLA repressor protein, and probably other minor signalling pathways.

Preparation Note

Preparation and Use

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I solubilize Gibberellic acid, Product G7645?
Gibberellic acid is tested for solubility in ethanol (50 mg/ml), yielding a clear, colorless to faint yellow solution.This may requireheating in a water bath for complete solubility.
How is the purity of Gibberellic acid, Product G7645, determined?
We measure purity by Thin Layer Chromatography, not by HPLC.
How would you recommend that I store a solution of Gibberellic acid, Product G7645?
This product can be initially dissolved in ethanol, diluted with water and stored at 2-8° C.
Can solutions of Gibberellic acid, Product G7645, be sterilized?
Yes. Sterilization can be either by filter sterilization or coautoclaving with other media components.
What concentration of Gibberellic acid, Product G7645, should I use with my plant culture?
Gibberellic acid is used at 0.01 - 5.0 mg/L.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
My question is not addressed here, how can I contact Technical Service for assistance?
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