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ACETAMINOPHEN IMPURITY B

ACETAMINOPHEN IMPURITY B structure

CAS No.: 1693-37-4

Chemical Name:: ACETAMINOPHEN IMPURITY B

Synonyms: parapropamol;ParacetaMol IMpurity B;Solvodol;Parapropanol;AKOS BBB/392;Parapropamolo;Parapropamolum;ACETAMINOPHENE IMP B;p-Propionamidophenol;4'-Hydroxypropionanilid

CBNumber:: CB1196696

Molecular Formula:: C9H11NO2

Molecular Weight:: 165.19

MDL Number:: MFCD00791257

MOL File:: 1693-37-4.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-27 23:12:44

Product description	Number	Pack Size	Price
Acetaminophen Related Compound B Pharmaceutical Secondary Standard; Certified Reference Material	PHR1642	50 mg	$801
N-(4-Hydroxyphenyl)propionamide	308122	100.00mg	$78
N-(4-Hydroxyphenyl)propionamide	308122	250.00mg	$121
N-(4-Hydroxyphenyl)propionamide	308122	1.00g	$247
N-(4-Hydroxyphenyl)propanamide	024186	100.00mg	$75
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ACETAMINOPHEN IMPURITY B Properties

Melting point	170-172°C
Boiling point	389.9±25.0 °C(Predicted)
Density	1.201
storage temp.	Sealed in dry,Room Temperature
solubility	Acetonitrile (Slightly), DMSO (Slightly), Methanol (Slightly)
form	Solid
pka	10.11±0.26(Predicted)
color	White to Pale Purple
Major Application	pharmaceutical (small molecule)
InChI	InChI=1S/C9H11NO2/c1-2-9(12)10-7-3-5-8(11)6-4-7/h3-6,11H,2H2,1H3,(H,10,12)
InChIKey	SSMYTAQHMUHRSK-UHFFFAOYSA-N
SMILES	C(NC1=CC=C(O)C=C1)(=O)CC
CAS DataBase Reference	1693-37-4
FDA UNII	I729P6N0P7
UNSPSC Code	41116107
NACRES	NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H302
Precautionary statements	P264-P270-P301+P312-P330-P501
Hazard Codes	Xi
WGK Germany	WGK 3
HazardClass	IRRITANT
HS Code	29242990
Storage Class	11 - Combustible Solids
Hazard Classifications	Acute Tox. 4 Oral

ACETAMINOPHEN IMPURITY B price More Price(40)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	PHR1642	Acetaminophen Related Compound B Pharmaceutical Secondary Standard; Certified Reference Material	1693-37-4	50 mg	$801	2026-04-30	Buy
Matrix Scientific	308122	N-(4-Hydroxyphenyl)propionamide	1693-37-4	100.00mg	$78	2026-05-19	Buy
Matrix Scientific	308122	N-(4-Hydroxyphenyl)propionamide	1693-37-4	250.00mg	$121	2026-05-19	Buy
Matrix Scientific	308122	N-(4-Hydroxyphenyl)propionamide	1693-37-4	1.00g	$247	2026-05-19	Buy
Matrix Scientific	024186	N-(4-Hydroxyphenyl)propanamide	1693-37-4	100.00mg	$75	2026-05-18	Buy

Product number	Packaging	Price	Buy
PHR1642	50 mg	$801	Buy
308122	100.00mg	$78	Buy
308122	250.00mg	$121	Buy
308122	1.00g	$247	Buy
024186	100.00mg	$75	Buy

ACETAMINOPHEN IMPURITY B Chemical Properties,Uses,Production

Chemical Properties

Pale Purple Solid

Uses

An Acetaminophen (A161220) impurity.

Uses

4-Propionamidophenol (Acetaminophen Impurity B) is an impurity of Acetaminophen (A161220) (1). Acetaminophen is an analgesic and antipyretic agent and used as a pain reliever to treat headache, muscle aches, and arthritis (2,3).

ACETAMINOPHEN IMPURITY B Preparation Products And Raw materials

Raw materials

Preparation Products

ACETAMINOPHEN IMPURITY B Suppliers

Global( 150)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	33024	60
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29815	58
Standardpharm Co. Ltd.	86-714-3992388	overseasales1@yongstandards.com	United States	14332	58
BOC Sciences	+1-631-485-4226	inquiry@bocsci.com	United States	19936	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
TargetMol Chemicals Inc.	+1-781-999-5354; +17819995354	marketing@targetmol.com	United States	32466	58
ANHUI WITOP BIOTECH CO., LTD	+8615255079626	eric@witopchemical.com	China	23541	58
Xi'an MC Biotech, Co., Ltd.	029-89275612 +8618991951683	mcbio_sales@163.com	China	2251	58
Finetech Industry Limited	+86-27-8746-5837 +8619945049750	info@finetechnology-ind.com	China	9539	58
CR Corporation Limited	+8613062833949	fred.wen@crcorporation.cn	China	8645	58

Supplier	Advantage
ATK CHEMICAL COMPANY LIMITED	60
career henan chemical co	58
Standardpharm Co. Ltd.	58
BOC Sciences	58
Alchem Pharmtech,Inc.	58
TargetMol Chemicals Inc.	58
ANHUI WITOP BIOTECH CO., LTD	58
Xi'an MC Biotech, Co., Ltd.	58
Finetech Industry Limited	58
CR Corporation Limited	58

View Lastest Price from ACETAMINOPHEN IMPURITY B manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2026-05-11	4-Propionamidophenol 1693-37-4	$29.00-57.00		99.79%	10g	TargetMol Chemicals Inc.
	2019-07-06	parapropamol 1693-37-4	$1.00	1KG	98%	200kg	Career Henan Chemical Co

4-Propionamidophenol
1693-37-4
$29.00-57.00
99.79%
TargetMol Chemicals Inc.

parapropamol
1693-37-4
$1.00
98%
Career Henan Chemical Co

ACETAMINOPHEN IMPURITY B Spectrum

ACETAMINOPHEN IMPURITY B(1693-37-4)¹HNMR

1693-37-4(ACETAMINOPHEN IMPURITY B)Related Search:

ACETAMINOPHEN IMPURITY J 2-Acetamidophenol 4,4'-Iminodiphenol hydrochloride 4-[1-(hydroxyamino)ethylidene]cyclohexa-2,5-dien-1-one 4'-Hydroxyacetophenone

3-CHLORO-4-HYDROXYACETANILIDE 2'-Hydroxyacetophenone 4-Acetoxyacetanilide N,N'-(OXYDI-4,1-PHENYLENE)BISACETAMIDE Acetanilide

Propionamide Acetoacet-p-phenetidide BRUCINE SULFATE 3-HYDROXY-P-BUTYROPHENETIDINE 10,11-Dimethoxystrychnine

4'-Methoxyacetoacetanilide 4-Aminophenol 4-Nitrophenol Acetaminophen Related Compound B

1of4

ACETAMINOPHEN IMPURITY B ACETAMINOPHENE IMP B AKOS BBB/392 N-(4-HYDROXYPHENYL)-PROPIONAMIDE parapropamol 4'-Hydroxypropionanilid 4-Propionamidophenol (Acetaminophen Impurity B) Parapropanol p-Hydroxypropionanilide p-Propionamidophenol Solvodol 4'-Hydroxypropionanilide N-(p-Hydroxyphenyl)propionamide ParacetaMol IMpurity B AcetaMinophen Related CoMpound B Acetaminophen Related Compound B (30 mg) (N-(4-hydroxyphenyl)propanamide) Acetaminophen Impurity 1 Paracetamol EP Impurity B Paracetamol Impurity 2(Paracetamol EP Impurity B) N-(4-Hydroxyphenyl)propanamide (N-P Propanamide, N-(4-hydroxyphenyl)- Paracetamol(Acetaminophen) EP Impurity B Acetaminophen impurities14561457 Acetaminophen EP Impurity B Acetaminophen Related Compound B (1003027) N-Propionyl-4-aminophenol Acetaminophen Related Compound B (N-(4-hydroxyphenyl)propanamide) (1003027) Acetaminophen USP Related Compound B 4-Propionamidophenol,Inhibitor,inhibit,4 Propionamidophenol,4Propionamidophenol Acetaminophen RC- B / PARACETAMOL IMP B Parapropamolo Parapropamolum Acetaminophene Related Compound B N-(4-Hydroxyphenyl)-propionamide in methanol 4-Propionamidophenol (Acetaminophen Impurity β) Paracetamol EP Impurity B N-(4-hydroxyphenyl)propionamide 4-Propionamidophenol, 10 mM in DMSO Paracetamol (Acetaminophen) EP Impurity B (Acetaminophen USP Related Compound B) Acetaminophen Impurity B/Acetaminophen Related Compound B 1693-37-4 Impurities Intermediates & Fine Chemicals Pharmaceuticals