4-Hydroxyphenylacetic acid

4-Hydroxyphenylacetic acid is a white to cream or light tan crystalline powder with a molecular weight of 152.15 g/mol and a melting point of 148-151 °C. It is soluble in water, alcohol, and other organic solvents. It has an acetic acid odor, and is stable in air and light. 4-HPAA is considered to be a non-toxic, non-irritating compound and has a low potential for skin absorption.


Chemical Name:

4-Hydroxyphenylacetic acid



Molecular Fomula:


Formula Weight:


Chemical Uses


4-Hydroxyphenylacetic acid (4-HPA) is an organic compound with the chemical formula C8H8O3 and the CAS registry number 156-38-7. It is a white to cream or light tan crystalline powder that is soluble in water and emits a faint odor. 4-HPA is an important chemical intermediate used in the production of drugs, herbicides, and other compounds.

Chemical Properties:

clear colorless to the yellowish viscous solution


4-HPA is a key intermediate in the synthesis of drugs and other compounds. It is also used in the production of herbicides, fungicides, and pesticide chemicals. As such, 4-HPA has become an important precursor in the manufacture of many products.

4-HPA is also used as a nutritional supplement. Research suggests that it may help improve athletic performance, reduce stress, and boost the immune system. It also shows promise as an anti-inflammatory and antioxidant agent.

Chemical Properties

Chemical name:

4-Hydroxyphenylacetic acid

Cas No:


Molecular Formula:


Formula Weight:



White to cream or light tan Crystalline Powder



Storage conditions:

Inert atmosphere,Room Temperature

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Tags: (p-hydroxyphenyl)-aceticaci; 4-carboxymethylphenol; 4-Hydroxybenzeneaceticacid; 4-HydroxyphenylaceticacidVetecChemicalbook(TM)reagentgrade,98%; ArbidolImpurityFHCl; LevothyroxineSodiumImpurityd; NSC27460; Aceticacid,(p-hydroxyphenyl)-

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