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Isopentanoic Acid CAS 503-74-2

Molecular Formula: C5H10O2

Formula Weight: 102.13

ZSpharmac: Isopentanoic Acid Supplier

Product Name: Isopentanoic Acid
CAS No: 503-74-2
Purity: 99%

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Basic Info

Product Name:Isopentanoic Acid
Other Names:Isovaleric Acid
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance:Clear Colorless to Slightly Yellow Liquid
EINECS No.:207-975-3
Storage:Store Below +30°C.
Provide:Isopentanoic Acid MSDS;
Isopentanoic Acid COA

What is Isopentanoic Acid?

Isovaleric acid, also known as isovaleric acid, is a straight-chain carboxylic acid with five carbon atoms, with a molecular formula of C5H10O2 and a molecular weight of 102.1243. It is a colorless to pale yellow liquid with a strong, unpleasant odor that is often described as similar to foot odor or stale cheese. Isovaleric acid is relatively common in nature and is found in a variety of plants and essential oils. For example, it is found in the roots of valerian, which is also the origin of its alias “isovaleric acid”.

Isopentanoic Acid Property

Melting point 

-29 °C (lit.)

Boiling point 

175-177 °C (lit.)


0.925 g/mL at 20 °C (lit.)

vapor pressure 

0.38 mm Hg ( 20 °C)

refractive index 

n20/D 1.403(lit.)


159 °F

storage temp. 

Store below +30°C.




4.77(at 25℃)



Specific Gravity

0.928 (20/20℃)


Clear colorless to slightly yellow


3.92(1 mM solution);3.4(10 mM solution);2.89(100 mM solution);


at 1.00 % in propylene glycol. sour stinky feet sweaty cheese tropical

Odor Type


explosive limit


Water Solubility 

25 g/L (20 ºC)


Isopentanoic Acid Uses

1. Flavors and Perfume Industry
Isopentanoic Acid itself has a pungent odor, but its esterification products, such as isovalerate, have a pleasant aroma and are widely used in the preparation of spices and perfumes. These esters provide long-lasting and unique aroma characteristics and are used in a variety of personal care products, household cleaners and air fresheners to add attractive scents.

2. Pharmaceutical industry
In the pharmaceutical field, Isopentanoic Acid and its derivatives serve as important synthetic precursors and are involved in the manufacture of a variety of drugs and pharmaceutical intermediates. They can be used to prepare antibiotics, analgesics, hormones, vitamin derivatives, etc., providing key chemical building blocks for drug synthesis.

3. Food industry
Isovaleric acid is used as a flavoring and preservative in the food industry. Its esters provide specific flavors and are used to enhance the aroma and taste of foods, especially in baking, confectionery, soft drinks and dairy products. At the same time, the antibacterial properties of isovaleric acid also have certain applications in food preservation, helping to extend the shelf life of food.

4. Agriculture and animal feed
In the agricultural field,Isopentanoic Acid can be used as a plant growth regulator by adjusting soil pH and promoting nutrient absorption by crops. In animal feed, it serves as a food attractant, which can improve the palatability of the feed and promote animal appetite. It also helps control the growth of microorganisms in the feed and ensure feed safety.

5. Materials Science
Isovaleric acid and its derivatives also occupy a place in materials science. They can participate in polymerization reactions as monomers to synthesize polymers and resins with special properties. These materials may have good weather resistance, chemical resistance and mechanical properties, and are suitable for In coatings, adhesives, plastic products and other fields.

6. Laboratory reagents and analytical chemistry
In chemical laboratories, Isopentanoic Acid is used as a standard reagent for quantitative analysis, and can also be used as a reaction medium or catalyst to participate in organic synthesis reactions. Its special chemical properties make it a useful chemical raw material in organic synthesis experiments, especially in esterification, acylation and other reactions.

Prominent Applications of Isovaleric Acid in Cosmetics

1. Skin conditioners
Although Isopentanoic Acid has a poor odor when used directly, ester derivatives formed after chemical modification, such as isovalerate, have a soft, long-lasting and pleasant aroma, and are commonly used fragrance ingredients in cosmetics. Not only do these esters provide the desired fragrance for cosmetics, they also act as skin conditioners, helping to improve product texture and make cosmetics spread and absorb more easily on the skin.

2. Antioxidant and anti-aging
Isopentanoic Acid and its derivatives have certain antioxidant properties, which can neutralize free radicals, reduce oxidative damage to the skin caused by ultraviolet rays, environmental pollution and other factors, thereby delaying the skin aging process. In anti-aging products, the addition of isovaleric acid can help protect skin collagen from damage, maintain skin elasticity, and reduce the formation of fine lines and wrinkles.

3. Enhancement of skin barrier function
By promoting the synthesis of skin lipids, Isopentanoic Acid and its derivatives help enhance skin barrier function and reduce water loss, which is especially important for dry and sensitive skin. This means that products containing isovaleric acid derivatives can help the skin lock in moisture, maintain the skin’s water and oil balance, and enhance the skin’s self-protection ability.

4. Antibacterial and Cleansing
Isovaleric acid has certain antibacterial properties, which can inhibit the growth of bacteria on the skin surface and reduce the occurrence of skin problems, such as acne and other inflammatory skin diseases. In cleansing products such as facial cleanser and shower gel, adding an appropriate amount of isovaleric acid or its derivatives can help maintain the microbial balance of the skin and prevent skin infections while cleaning.

5. Shampoos and hair care products
In hair care products, isovalerates can be used as fragrances. At the same time, they can also improve the smoothness and gloss of hair and help repair damaged hair. By regulating scalp oil production, isovaleric acid-related ingredients can also reduce scalp problems such as dandruff and itching.


National Center for Biotechnology Information (2024). PubChem Compound Summary for CID 10430, Isovaleric acid. Retrieved May 21, 2024 from https://pubchem.ncbi.nlm.nih.gov/compound/Isovaleric-acid.

As a company specializing in the production and supply of Isopentanoic Acid raw materials, we are committed to providing customers with high-quality products and preferential prices. We have rich experience and technology to ensure product quality and stable supply. No matter where you are, we can provide you with the Isopentanoic Acid raw materials you need to support your production and research and development.

We always adhere to the principle of honest operation, strictly control product quality, and serve every customer with a customer-first attitude. Over the years, we have established good cooperative relationships with customers at home and abroad and won their trust and praise.

If you have needs or are interested in our products, please contact our service staff directly, we will wholeheartedly provide you with the best quality services and products. Looking forward to cooperating with you and developing together!

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

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: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic 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.

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