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PHR1011

Supelco

Ethylparaben

Pharmaceutical Secondary Standard; Certified Reference Material

Synonym(s):
EP, Ethylparaben, Ethyl 4-hydroxybenzoate
Linear Formula:
HOC6H4CO2C2H5
CAS Number:
Molecular Weight:
166.17
Beilstein:
1101972
EC Number:
MDL number:
eCl@ss:
39024522
PubChem Substance ID:
E Number:
E214
NACRES:
NA.24

Quality Level

grade

certified reference material
pharmaceutical secondary standard

form

neat

CofA

current certificate can be downloaded

application(s)

HPLC: suitable
gas chromatography (GC): suitable

bp

297-298 °C (lit.)

mp

114-117 °C (lit.)

Featured Industry

Cleaning Products
Cosmetics
Flavors and Fragrances
Food and Beverages
Personal Care
Pharmaceutical (small molecule)

format

neat

pharmacopeia traceability

traceable to PhEur E2425000
traceable to USP 1267000

SMILES string

CCOC(=O)c1ccc(O)cc1

InChI

1S/C9H10O3/c1-2-12-9(11)7-3-5-8(10)6-4-7/h3-6,10H,2H2,1H3

InChI key

NUVBSKCKDOMJSU-UHFFFAOYSA-N

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General description

Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

Application

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.
Ethylparaben may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by high performance liquid chromatography (HPLC).

Analysis Note

These secondary standards offer multi-traceability to the USP, EP (PhEur) and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.

Footnote

To see an example of a Certificate of Analysis for this material enter LRAC3158 in the slot below. This is an example certificate only and may not be the lot that you receive.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Determination of combined p-hydroxy benzoic acid preservatives in a liquid pharmaceutical formulation by HPLC
Shabir GA.
Journal of Pharmaceutical and Biomedical Analysis, 34(1), 207-213 (2004)
Maw-Rong Lee et al.
Journal of chromatography. A, 1120(1-2), 244-251 (2006-03-04)
This study evaluated supercritical fluid extraction (SFE) combined with liquid chromatography-mass spectrometry (LC-MS) to determine trace preservatives and antioxidants including methylparaben (MP), ethylparaben (EP), propylparaben (PP), butylparaben (BP), butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), alpha-tocopherol (alpha-t) and alpha-tocopherol acetate (alpha-ta)...
Suzanne Abbas et al.
Drug metabolism and pharmacokinetics, 25(6), 568-577 (2010-10-12)
Parabens (alkyl esters of 4-hydroxybenzoic acid) are widely used as preservatives in drugs, cosmetic products, and foodstuffs. Safety concerns have recently increased due to the potential health risks associated to exposure to large amounts of these substances. Biotransformation of parabens...
Sawsan El Hussein et al.
Experimental dermatology, 16(10), 830-836 (2007-09-12)
Concern is continuously raised about the safety of parabens which are present in most of the cosmetic preparations. In this investigation, methyl-, ethyl-, propyl- and butyl paraben (MP, EP, PP, BP), in a commercial cosmetic lotion, were deposited on human...
Shinshi Oishi
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 42(11), 1845-1849 (2004-09-08)
Parabens are alkyl esters of p-hydroxybenzoic acid widely used as preservatives in foodstuffs, cosmetics toiletries and pharmaceuticals. These compounds are known to exert a weak estrogenic activity in estrogen receptor assays in vitro. In addition butyl and propyl parabens show...

Protocols

HPLC Analysis of Paraben Preservatives on Discovery® C18

Separation of Methyl Paraben, analytical standard; Ethylparaben, United States Pharmacopeia (USP) Reference Standard; Propylparaben, United States Pharmacopeia (USP) Reference Standard; Butylparaben, United States Pharmacopeia (USP) Reference Standard

HPLC Analysis of Benzoic Acid and Related Compounds on Ascentis® RP-Amide

Separation of 4-Hydroxybenzoic acid; Acetylsalicylic acid; Benzoic acid; Salicylic acid; Ethyl 4-hydroxybenzoate

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