PHR1396-1G Display Image

Methotrexate, pharmaceutical secondary standard; traceable to USP and PhEur

Code: PHR1396-1G D2-231

Analysis Note

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


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£121.82 1G

Analysis Note

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


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.

Methotrexate may be used as a pharmaceutical secondary reference standard for the determination of the analyte in plasma samples and pharmaceutical formulations by various techniques.


To see an example of a Certificate of Analysis for this material enter LRAB9958 in the slot below. This is an example certificate only and may not be the lot that you receive.

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.Methotrexate is an antagonist of folic acid that inhibits dihydrofolate reductase (DHFR) enzyme, reversibly and results in impaired DNA synthesis and cellular replication. Methotrexate has been used in treatment of rheumatoid arthritis and also for maintenance therapy in childhood acute lymphocytic leukemia (ALL).

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.

agencytraceable to Ph. Eur. M1000000, traceable to USP 1414003
application(s)pharmaceutical (small molecule)
CofAcurrent certificate can be downloaded
Gene Informationhuman ... DHFR(1719)
gradepharmaceutical secondary standard, certified reference material
Quality Level300
SMILES stringCN(Cc1cnc2nc(N)nc(N)c2n1)c3ccc(cc3)C(=O)N[C@@H](CCC(O)=O)C(O)=O
storage temp.2-8°C
technique(s)gas chromatography (GC): suitable, HPLC: suitable
Cas Number59-05-2
Hazard Class6.1
Un Number1544
Pack GroupIII
This product has met the following criteria: