Paracetamol EP Impurity B

Name: Paracetamol EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-023460

About Paracetamol EP Impurity B

Paracetamol EP Impurity B is a pharmacopeial impurity of Paracetamol carrying the CAS registry number 1693-37-4. Its molecular formula is C9H11NO2 and its molecular weight is 165.19 g/mol. Systematically, it is named N-(4-hydroxyphenyl)propanamide. Common synonyms include Paracetamol - Impurity B and Acetaminophen EP Impurity B.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

This Paracetamol impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Paracetamol EP Impurity B in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Paracetamol

View every impurity, metabolite and intermediate we list for Paracetamol.

Paracetamol impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Paracetamol EP Impurity B
Catalogue No.	VQ-023460
CAS Number	1693-37-4
IUPAC name	N-(4-hydroxyphenyl)propanamide
Molecular formula	C₉H₁₁NO₂
Molecular weight	165.19 g/mol
Exact mass	165.079
Grade	Reference Standard
HSN code	38229090
InChIKey	SSMYTAQHMUHRSK-UHFFFAOYSA-N
SMILES	CCC(=O)NC1=CC=C(C=C1)O
PubChem CID	74325

Physical properties
Physical form	Solid
LogP (XLogP3)	1.3
H-bond donors / acceptors	2 / 2
TPSA	49.3 Å²
Synonyms	Paracetamol - Impurity B, Acetaminophen EP Impurity B, Parapropamol, para-hydroxypropionanilide, N-(4-Hydroxyphenyl)propionamide, 4-Propionamidophenol, Acetaminophen impurity B, 4'-Hydroxypropionanilid, Propanamide, N-(4-hydroxyphenyl)-, 4-propionamidophenol (acetaminophen impurity b), n-(4-hydroxyphenyl)-propionamide, parapropanol

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Paracetamol EP Impurity B?

The CAS Registry Number of Paracetamol EP Impurity B is 1693-37-4. It is also known as Paracetamol - Impurity B, Acetaminophen EP Impurity B, Parapropamol.

What is the molecular formula and molecular weight of Paracetamol EP Impurity B?

Paracetamol EP Impurity B has the molecular formula C9H11NO2 and a molecular weight of 165.19 g/mol. Its IUPAC name is N-(4-hydroxyphenyl)propanamide.

What is Paracetamol EP Impurity B used for?

Paracetamol EP Impurity B is supplied as a characterised reference material related to Paracetamol. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Paracetamol EP Impurity B can I order?

We supply Paracetamol EP Impurity B in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Paracetamol EP Impurity B?

Yes. Every lot of Paracetamol EP Impurity B is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Paracetamol EP Impurity B be shipped internationally?

Yes. Paracetamol EP Impurity B is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.