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PHR1413

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Ethosuximide

Pharmaceutical Secondary Standard; Certified Reference Material

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Synonym(s):
Ethosuximide, 2-Ethyl-2-methylsuccinimide
Empirical Formula (Hill Notation):
C7H11NO2
CAS Number:
77-67-8
Molecular Weight:
141.17
EC Number:
201-048-7
MDL number:
MFCD00072123
PubChem Substance ID:
329823384
NACRES:
NA.24

grade

certified reference material
pharmaceutical secondary standard

Quality Level

300

Agency

traceable to BP 146
traceable to Ph. Eur. E2150000
traceable to USP 1264002

API family

ethosuximide

CofA

current certificate can be downloaded

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

SMILES string

O=C1NC(CC1(C)CC)=O

InChI

1S/C7H11NO2/c1-3-7(2)4-5(9)8-6(7)10/h3-4H2,1-2H3,(H,8,9,10)

InChI key

HAPOVYFOVVWLRS-UHFFFAOYSA-N

Gene Information

human ... CACNA1G(8913) , CACNA1H(8912) , CACNA1I(8911)

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Ethosuximide Pharmaceutical Secondary Standard; Certified Reference Material

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PHR1413

Ethosuximide

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PHR1649

Omeprazole Related Compound E

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PHR1712

Phenylephrine Related Compound E

Mesityl Oxide Pharmaceutical Secondary Standard; Certified Reference Material

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PHR1547

Mesityl Oxide

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

technique(s)

HPLC: suitable, gas chromatography (GC): suitable

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

format

neat

format

neat

format

neat

format

neat

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-30°C

Quality Level

300

Quality Level

300

Quality Level

300

Quality Level

300

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

Ethosuximide may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by micellar liquid chromatography.
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.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP 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 LRAC3706 in the slot below. This is an example certificate only and may not be the lot that you receive.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302

Precautionary Statements

P301 + P312 + P330

Hazard Classifications

Acute Tox. 4 Oral

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Determination of Anticonvulsant Drugs in Pharmaceutical Preparations by Micellar Liquid Chromatography
Cholbi-Cholbi MF, et al.
Journal of Liquid Chromatography and Related Technologies, 27(1), 153-170 (2004)
S J Wallace
Epilepsy research, 29(2), 147-154 (1998-02-26)
Based on small numbers of patients, it is possible to make the following suggestions rather than categorical statements. For myoclonic seizures and epilepsies which are not otherwise specified, valproate seems of proven efficacy. Ethosuximide may be a useful adjunct. The
[Ethosuximide].
M Ichiba et al.
Nihon rinsho. Japanese journal of clinical medicine, 53 Su Pt 1, 915-917 (1995-02-01)
J S Millership et al.
European journal of drug metabolism and pharmacokinetics, 18(4), 349-353 (1993-10-01)
The metabolism of the antiepileptic drug ethosuximide (3-ethyl-3-methylpyrollidine-2,5-dione) (I) in animals and humans is reviewed. Chiral aspects of the metabolism of ethosuximide are discussed. Clarification of the precise nature of the hydroxymetabolites of ethosuximide is presented.
E B Posner et al.
The Cochrane database of systematic reviews, (3)(3), CD003032-CD003032 (2003-08-15)
Absence seizures are brief epileptic seizures which present in childhood and adolescence. They are characterised by sudden loss of awareness and an electroencephalogram (EEG) typically shows generalised spike wave discharges at three cycles per second. Ethosuximide, valproate and lamotrigine are
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