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L-Phe(4-COCH3)

L-Phe(4-COCH3) structure

CAS No.: 122555-04-8

Chemical Name:: L-Phe(4-COCH3)

Synonyms: L-Phe(4-COCH3);L-Phe(4-Ac)-OH;L-4-ACETYLPHENYLALANINE;4-Acetyl-L-phenylalanine;L-Phenylalanine, 4-acetyl-;4-Acetyl-L-phenylalanine Hydrochloride;(S)-3-(4-acetylphenyl)-2-aminopropanoicacid;L-4-Acetylphenylalanine (contains up to 20% inorganics)

CBNumber:: CB5105579

Molecular Formula:: C11H13NO3

Molecular Weight:: 207.23

MDL Number:: MFCD06659983

MOL File:: 122555-04-8.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-09-12 18:53:02

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L-Phe(4-COCH3) Properties

Melting point	>300°C (dec.)
Boiling point	396.7±37.0 °C(Predicted)
Density	1.226±0.06 g/cm3(Predicted)
storage temp.	under inert gas (nitrogen or Argon) at 2–8 °C
solubility	DMSO (Slightly), Methanol (Slightly), Water (Slightly)
pka	2.15±0.10(Predicted)
form	Solid
color	Pale Yellow to Brown
FDA UNII	Y61IJN1HNY

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H303-H320
Precautionary statements	P312-P264-P305+P351+P338-P337+P313
HS Code	2922500090

L-Phe(4-COCH3) price More Price(39)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
TRC	TRC-A145345-50MG	L-4-Acetylphenylalanine (contains up to 20% inorganics)	122555-04-8	50mg	$123	2026-06-03	Buy
TRC	TRC-A145345-25MG	L-4-Acetylphenylalanine (contains up to 20% inorganics)	122555-04-8	25mg	$84	2026-06-03	Buy
TRC	TRC-A145345-100MG	L-4-Acetylphenylalanine (contains up to 20% inorganics)	122555-04-8	100mg	$199	2026-06-03	Buy
Apolloscientific	OR928215	4-Acetyl-L-phenylalanine 97%	122555-04-8	100mg	$55	2026-06-04	Buy
Apolloscientific	OR928215	4-Acetyl-L-phenylalanine 97%	122555-04-8	250mg	$112	2026-06-04	Buy

Product number	Packaging	Price	Buy
TRC-A145345-50MG	50mg	$123	Buy
TRC-A145345-25MG	25mg	$84	Buy
TRC-A145345-100MG	100mg	$199	Buy
OR928215	100mg	$55	Buy
OR928215	250mg	$112	Buy

L-Phe(4-COCH3) Chemical Properties, Uses, Production

Uses

4-Acetyl-L-phenylalanine is the 4-acetyl analogue of the essential amino acid L-phenylaniline. 4-Acetyl-L-phenylalanine as well as other unnatural amino acids can be genetically incorporated successfully into proteins in Escherichia coli as well as mammalian cells.

L-Phe(4-COCH3) Preparation Products And Raw materials

Raw materials

Preparation Products

Fmoc-L-Phe(4-COCH3)

L-Phe(4-COCH3) Suppliers

Global Suppliers ( 73)

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
GL Biochem (Shanghai) Ltd	21-61263452 13641803416	ymbetter@glbiochem.com	China	9981	64
Chemsky（shanghai）International Co.,Ltd.	021-50135380	shchemsky@sina.com	China	32273	50
Shanghai Sunway Pharmaceutical Technology Co., Ltd	13761987713	hxzheng@sunwaypharm.cn	China	8663	57
Amatek Scientific Co. Ltd.	0512-56316828 4008675858	sales@amateksci.com	China	9848	55
Bide Pharmatech Ltd.	400-164-7117 18317119277	product02@bidepharm.com	China	40000	60
Chengdu Firster Pharmaceutical Co., Ltd.	028-87078428 028-87074958	chengzhenyong@cdfirster.com	China	2580	60
Shanghai Race Chemical Co., Ltd.	86-021-54933292	sales@racechemical.com	China	239	50
Nanjing Derno Pharmaceutical Technology Co., Ltd.	02585057128;025-86957866 13952093866	sales@dernopharm.com	China	943	58
Shanghai Synchem Pharma Co., ltd	21-619849051-1 18521059765	synchempharma@aliyun.com	China	4988	55

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
GL Biochem (Shanghai) Ltd	64
Chemsky（shanghai）International Co.,Ltd.	50
Shanghai Sunway Pharmaceutical Technology Co., Ltd	57
Amatek Scientific Co. Ltd.	55
Bide Pharmatech Ltd.	60
Chengdu Firster Pharmaceutical Co., Ltd.	60
Shanghai Race Chemical Co., Ltd.	50
Nanjing Derno Pharmaceutical Technology Co., Ltd.	58
Shanghai Synchem Pharma Co., ltd	55

View Latest Price from L-Phe(4-COCH3) manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2026-07-10	L-PHE(4-COCH3) 122555-04-8		1kg	98%	1000kg	Shaanxi Dideu New Materials Co. Ltd
	2026-04-20	H-Phe(4-Ac)-OH 122555-04-8	$40.00			10g	TargetMol Chemicals Inc.

L-PHE(4-COCH3)
122555-04-8
98%
Shaanxi Dideu New Materials Co. Ltd

H-Phe(4-Ac)-OH
122555-04-8
$40.00
TargetMol Chemicals Inc.

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L-4-ACETYLPHENYLALANINE 4-Acetyl-L-phenylalanine 4-Acetyl-L-phenylalanine Hydrochloride L-Phenylalanine, 4-acetyl- (S)-3-(4-acetylphenyl)-2-aminopropanoicacid L-Phe(4-Ac)-OH L-4-Acetylphenylalanine (contains up to 20% inorganics) L-Phe(4-COCH3) 122555-04-8 Amino Acids & Derivatives Aromatics