Indole-3-Acetic Acid CAS 87-51-4

CBNumber: CB8783347

Molecular Formula: C10H9NO2

Formula Weight: 175.18

Product Name: Indole-3-Acetic Acid             CAS Number: 87-51-4              Purity: 99%

Basic Info

CAS No.:




Place of Origin:




Model Number:

Indole-3-Acetic Acid 


White powder, white powder

CAS number:







Indole-3-Acetic Acid msds; Indole-3-Acetic Acid COA


Other Names:

Kyselina 3-indolyloctova/Indole Acetic Acid/iaa indole acetic acid/iaa indole 3 acetic acid




organic intermediate

Brand Name:

Zhishang Chemical


Organic Syntheses

Product name:

Indole-3-acetic acid



EINECS number:







2,3-dihydro-1H-indol-3-ylacetic acid;indolyl-aceticaci;Kyselina 3-indolyloctova;kyselina3-indolyloctova;omega-Skatole carboxylic acid;omega-skatolecarboxylicacid;Rhizopon A;Rhizopon A;auxin indole acetic acid;iaa in plants;auxin indole acetic acid;indole acetic acid sigma

Product Categories:

indole derivative;Carboxylic Acids;Pyrroles & Indoles;Indole;Organic acids;Agricultural Usage;Indoles;PLANT GROWTH REGULATOR;Auxins;Biochemistry;Plant Growth Regulators;Simple Indoles;Plant Hormones;fertilizer;Indoles and derivatives;API intermediates;Carboxylic Acids;Pyrroles & Indoles;Aronatics;Heterocycles;Indole Derivatives;plantgrowth;Indolines ,Indoles ,Indazoles

Chemical Properties:

White crystalline powder. Melting point is 165-166°C (168-170°C). Easily soluble in acetone and ether, slightly soluble in chloroform, insoluble in water

  1. Indole-3-Acetic Acid used as a plant growth regulator, it can promote cell division, accelerate root formation, increase fruit setting and prevent fruit drop
  2. Indole-3-Acetic Acid (IAA) is a broad-spectrum plant growth regulator of indole with auxin activity; it regulates cell membrane electron channels and proton channels.
  3. Indole-3-Acetic Acid used as plant growth stimulants and analytical reagents. 3-indole acetic acid and auxins such as 3-indole acetaldehyde, 3-indole acetonitrile and ascorbic acid exist naturally in nature. The precursor of 3-indole acetic acid biosynthesis in plants is tryptophan. The basic role of auxin is to regulate the growth of plants, not only to promote growth, but also to inhibit growth and organ formation. In plant cells, auxin not only exists in a free state, it can also exist in bound auxins that are firmly bound to biopolymers, and there are also auxins that form conjugates with special substances, such as indole acetyl asparagine. , Indole Acetate, Pennose and Indole Acetyl Glucose, etc. This may be a way of storing auxin in cells, and it is also a way of detoxifying the poison of excess auxin.

Indole-3-Acetic Acid is biosynthesised in plants from tryptophan by two pathways, the indolylpyruvic acid pathway being quantitatively the more important. Experiments with tomato shoots have shown the existence of a tryptophan transaminase, which catalyses the formation of indolylpyruvic acid, and a tryptophan decarboxylase, which catalyses the formation of tryptamine. The decarboxylation of indolylpyruvic acid is catalysed by indolylpyruvate decarboxylase, while indolylacetaldehyde dehydrogenase catalyses the oxidation of indolylacetaldehyde to indolylacetic acid.
The biosynthesis of 3-indolylacetic acid
The biosynthesis of Indole-3-Acetic Acid

Biological Functions:

3-Indolylacetic acid (indole-3-acetic acid, IAA) is one of the auxins, which together with the gibberellins and abscisic acid, cyto- kinins and ethylene are hormones regulating the growth and development of plants. IAA is a ubiquitous constituent of higher plants and the most important auxin. Some other, non-indolic compounds, including phenyl- acetic acid biosynthesised in plants from phenylalanine, have similar properties and synthetic auxins have also been prepared.
In the plant, Indole-3-Acetic Acid conjugates with many compounds, including glucose and other sugars, and with aspartic and glutamic acids. This is probably a way of storing the hormone for future use.
Indole-3-Acetic Acid initiates many growth effects in plants, including geotropism and phototropism, development of the ovary, division of cells, enlargement in callus tissue, root formation and apical dominance. When fed to plants, the hormone causes growth up to a maximum, which depends on the type of tissue being fed, and thereafter inhibits further growth, probably through the formation of ethylene, which is growth-inhibitory. Stern tissues tolerate the highest levels of Indole-3-Acetic Acid and root tissues the lowest. In the plant, the most active sites of Indole-3-Acetic Acid synthesis are the young, expanding leaves.

Storage condition: Cool Dry Place
Long term storage: Store -20°C.

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food Additives
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

Get Indole-3-Acetic Acid Quotation

Scroll to Top