PHR1413
Ethosuximide
Pharmaceutical Secondary Standard; Certified Reference Material
Synonym(s):
Ethosuximide, 2-Ethyl-2-methylsuccinimide
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About This Item
Empirical Formula (Hill Notation):
C7H11NO2
CAS Number:
Molecular Weight:
141.17
EC Number:
MDL number:
UNSPSC Code:
41116107
PubChem Substance ID:
NACRES:
NA.24
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grade
certified reference material
pharmaceutical secondary standard
Quality Level
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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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.
Recommended products
Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.
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Product No.
Description
Pricing
Signal Word
Warning
Hazard Statements
Precautionary Statements
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
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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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