G7645 Sigma

Gibberellic acid

BioReagent, plant cell culture tested, ≥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 Registry Number 54346

  •  EC Number 201-001-0

  •  MDL number MFCD00079329

  •  PubChem Substance ID 24895317

  • Popular Documents:  FTNMR (PDF)  



Related Categories Allium sativum (Garlic), Cell Biology, Miscellaneous Plant Growth Regulators, Molecular Biology, Nutrition Research,
product line   BioReagent
assay   ≥90% gibberellin A3 basis (of total gibberellins.)
suitability   plant cell culture tested
Featured Industry   Agriculture


Frequently Asked Questions

Frequently Asked Questions are available for this Product.

General description

Gibberellic acid is an endogenous plant growth regulator


1 g in glass bottle

Preparation Note

Preparation and Use


Gibberillic acids (GA) are important plant growth hormones that promote plant cell growth and elongation. Gebberillins 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, tensioning and floral display.
Gibberellin A3 (G1025, G7645) and A4 (G7276) may be used as supplements to plant growth media such as Murashige and Skoog media. The specific actions of A3 and A4 or combinations of Gebberellins should be determined in specific plant applications.

Biochem/physiol Actions

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.

Price and Availability

Laboratory Gloves

All labs need water
Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 

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. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option:
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 require heating 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, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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Protocols & Articles


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