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4-Hydroxyphenethyl alcohol

Description Health Benefits Side effects Uses
4-Hydroxyphenethyl alcohol
4-Hydroxyphenethyl alcohol structure
Chemical Name:
4-Hydroxyphenethyl alcohol
PHEP;p-HPEA;TYROSOL;Tyramol;NSC 59876;p-Tyrosol;p-Thyrosol;Salidrosol;AKOS 91052;PARA-TYROSOL
Molecular Formula:
Formula Weight:
MOL File:

4-Hydroxyphenethyl alcohol Properties

Melting point:
89-92 °C(lit.)
Boiling point:
195°C (18 mmHg)
1.0742 (rough estimate)
refractive index 
1.5590 (estimate)
Flash point:
storage temp. 
Store below +30°C.
Crystals or Crystalline Powder
Off-white to light beige
Water Solubility 
slightly soluble
CAS DataBase Reference
501-94-0(CAS DataBase Reference)
EWG's Food Scores
NIST Chemistry Reference
Benzeneethanol, 4-hydroxy-(501-94-0)
EPA Substance Registry System
4-Hydroxybenzeneethanol (501-94-0)
  • Risk and Safety Statements
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P305+P351+P338-P280a-P304+P340-P405-P501a-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-37/39-24/25-36
WGK Germany  3
Hazard Note  Irritant
HS Code  29072900

4-Hydroxyphenethyl alcohol price More Price(15)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 79058 2-(4-Hydroxyphenyl)ethanol analytical standard 501-94-0 100 mg $22.4 2021-03-22 Buy
Sigma-Aldrich 79058 2-(4-Hydroxyphenyl)ethanol analytical standard 501-94-0 500 mg $74.3 2021-03-22 Buy
Sigma-Aldrich 188255 2-(4-Hydroxyphenyl)ethanol 98% 501-94-0 25g $178 2021-03-22 Buy
Sigma-Aldrich 188255 2-(4-Hydroxyphenyl)ethanol 98% 501-94-0 5g $86.8 2021-03-22 Buy
TCI Chemical H0720 2-(4-Hydroxyphenyl)ethanol >98.0%(GC) 501-94-0 25g $38 2021-03-22 Buy

4-Hydroxyphenethyl alcohol Chemical Properties,Uses,Production


Phenylalanine is an amino acid, which are the building blocks of proteins in your body. This molecule exists in two forms or arrangements: L-phenylalanine and D-phenylalanine. They’re nearly identical but have a slightly different molecular structure. The L-form is found in foods and used to produce proteins in your body, while the D-form can be synthesized for use in certain medical applications . Your body is unable to produce enough L-phenylalanine on its own, so it’s considered an essential amino acid that must be obtained through your diet. It’s found in a wide variety of foods — both plant and animal sources. In addition to its role in protein production, phenylalanine is used to make other important molecules in your body, several of which send signals between different parts of your body. Phenylalanine has been studied as a treatment for several medical conditions, including skin disorders, depression and pain. However, it can be dangerous for people with the genetic disorder phenylketonuria (PKU).

Health Benefits

Phenylalanine can be used to produce the molecule dopamine. Dopamine malfunction in the brain is associated with some forms of depression . One small 12-person study showed a possible benefit of a mixture of the D- and L-forms of this amino acid for treating depression, with 2/3 of patients showing improvement . However, there is minimal other support for phenylalanine’s effects on depression, and most studies have not found clear benefits. In addition to vitiligo and depression, phenylalanine has been studied for potential effects on:

Pain: The D-form of phenylalanine may contribute to pain relief in some instances, though study results are mixed .

Alcohol withdrawal: A small amount of research indicates that this amino acid, along with other amino acids, may help alleviate symptoms of alcohol withdrawal.

Parkinson’s disease: Very limited evidence suggests that phenylalanine may be beneficial in treating Parkinson’s disease, but more studies are needed .

ADHD: Currently, research does not indicate benefits of this amino acid for the treatment of attention deficit hyperactivity disorder (ADHD) .

Side effects

Phenylalanine is found in many protein-containing foods and is “generally recognized as safe” by the Food and Drug Administration (FDA) (27). The amount of this amino acid found in foods should not pose a risk for otherwise healthy individuals. What’s more, few or no side effects are generally observed at supplement doses of 23–45 mg per pound (50–100 mg per kg) of body weight (9Trusted Source, 13Trusted Source). However, it may be best for pregnant women to avoid taking phenylalanine supplements.


L-phenylalanine (LPA) serves as a building block for the various proteins that are produced in the body. LPA can be converted to L-tyrosine (another amino acid ) and subsequently to L-dopa, norepinephrine, and epinephrine . LPA can also be converted (through a separate pathway) to phenylethylamine, a substance that occurs naturally in the brain and appears to elevate mood.

Chemical Properties

off-white to light beige crystals or crystalline


Phenolic antioxidant.


ChEBI: A phenol substituted at position 4 by a 2-hydroxyethyl group.

4-Hydroxyphenethyl alcohol Preparation Products And Raw materials

Raw materials

Preparation Products

4-Hydroxyphenethyl alcohol Suppliers

Global( 513)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Nantong Haigine Pharma Technology Co., Ltd
0086-513-86855116 CHINA 156 58
Capot Chemical Co.,Ltd.
+86(0)13336195806 +86-571-85586718
+86-571-85864795 China 20010 60
Hangzhou FandaChem Co.,Ltd.
+86-571-56059825 CHINA 8882 55
Shanxi Naipu Import and Export Co.,Ltd
+8613734021967 CHINA 1010 58
Shanghai Zheyan Biotech Co., Ltd.
18017610038 CHINA 3623 58
career henan chemical co
+86-371-86658258 CHINA 29961 58
Chengdu GLP biotechnology Co Ltd
13350802083 028-87075086 CHINA 1824 58
Chengdu Biopurify Phytochemicals Ltd.
18482058008 18080483897 CHINA 2712 58
Hubei Jusheng Technology Co.,Ltd.
027-59599243 CHINA 28229 58
Accela ChemBio Inc.
(+1)-858-876-1948 United States 19969 58

View Lastest Price from 4-Hydroxyphenethyl alcohol manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-21 4-Hydroxyphenyl ethanol
US $1.00-499.00 / KG 0.5KG >99% 20tons Anhui Rencheng Technology Co., Ltd
2021-09-26 2-(4-hydroxyphenyl)ethanol 501-94-0
US $35.00 / g 1g ≥98% 1000.00 kgs NanJing Spring & Autumn Biological Engineering CO., LTD.
2021-09-14 4-Hydroxyphenethyl alcohol
US $119.00 / KG 1Kg/Bag 99 10T Baoji Guokang Healthchem co.,ltd

4-Hydroxyphenethyl alcohol Spectrum

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