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Pharmaceutical Secondary Standard; Certified Reference Material

Lamotrigine, GI 267119X, 6-(2,3-Dichlorophenyl)-1,2,4-triazine-3,5-diamine
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


certified reference material
pharmaceutical secondary standard


current certificate can be downloaded


HPLC: suitable
gas chromatography (GC): suitable


pharmaceutical (small molecule)



pharmacopeia traceability

traceable to PhEur Y0001030
traceable to USP 1356756

storage temp.


SMILES string




InChI key


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General description

Lamotrigine is an anticonvulsant drug, which is widely used in the treatment of epilepsy and bipolar disorders. It is also used in combination with other antiepileptics to treat refractory partial seizures, generalized tonic-clonic seizures and generalized toxic-chronic seizures.
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.


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.
Labetalol Hydrochloride may be used as a pharmaceutical reference standard for the quantification of the analyte in pharmaceutical formulations using spectrophotometric technique.

Biochem/physiol Actions


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.


To see an example of a Certificate of Analysis for this material enter LRAC3640 in the slot below. This is an example certificate only and may not be the lot that you receive.


Skull and crossbones

Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

More documents

Quotes and Ordering

Sensitive spectrophotometric determination of lamotrigine in bulk drug and pharmaceutical formulations using bromocresol green
Rajendraprasad N, et al.
Ecletica Quimica, 35(1), 55-66 (2010)
Spectrophotometric determination of lamotrigine in pharmaceutical preparations and urine by charge-transfer complexation
Alizadeh N, et al.
Pharmazie, 63(11), 791-795 (2008)
Philip J Wiffen et al.
The Cochrane database of systematic reviews, 12(12), CD006044-CD006044 (2013-12-04)
This is an update of the original Cochrane review entitled Lamotrigine for acute and chronic pain published in Issue 2, 2007, and updated in Issue 2, 2011. Some antiepileptic medicines have a place in the treatment of neuropathic pain (pain
Zhi-fei Wang et al.
Acta pharmacologica Sinica, 32(12), 1433-1445 (2011-11-08)
The mood stabilizers lithium, valproate and lamotrigine are traditionally used to treat bipolar disorder. However, accumulating evidence suggests that these drugs have broad neuroprotective properties and may therefore be promising therapeutic agents for the treatment of neurodegenerative diseases, including stroke.
Jacqueline A French et al.
Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics, 9(1), 176-184 (2011-12-06)
The efficacy and safety of lamotrigine extended-release tablets (LTG XR) as monotherapy for partial seizures were evaluated using the conversion-to-monotherapy design, and historical data as the control. This methodology was recently approved by the United States Food and Drug Administration

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