PHR1056

Trimethoprim

Pharmaceutical Secondary Standard; Certified Reference Material

• Synonym(s): 2,4-Diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine, NSC 106568
• Empirical Formula (Hill Notation): C₁₄H₁₈N₄O₃
• CAS Number: 738-70-5
• Molecular Weight: 290.32
• Beilstein: 625127
• EC Number: 212-006-2
• MDL number: MFCD00036761
• UNSPSC Code: 41116107
• PubChem Substance ID: 329823086
• NACRES: NA.24

Properties

• grade: certified reference material; pharmaceutical secondary standard
• Quality Level: 300
• Agency: traceable to BP 344; traceable to Ph. Eur. T220000; traceable to USP 1692505
• API family: trimethoprim
• CofA: current certificate can be downloaded
• technique(s): HPLC: suitable; gas chromatography (GC): suitable
• application(s): pharmaceutical (small molecule)
• format: neat
• storage temp.: 2-30°C
• SMILES string: COc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC
• InChI: 1S/C14H18N4O3/c1-19-10-5-8(6-11(20-2)12(10)21-3)4-9-7-17-14(16)18-13(9)15/h5-7H,4H2,1-3H3,(H4,15,16,17,18)
• InChI key: IEDVJHCEMCRBQM-UHFFFAOYSA-N

Description

General description

Certified pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to in-house working standards. Trimethoprim is a synthetic antibacterial agent active in vitro against most aerobic gram-negative and gram-positive bacteria. Its mode of action involves inhibition of dihydrofolate reductase, an enzyme involved in catalyzing the reduction of dihydrofolate to tetrahydrofolate in both microbial and eukaryotic cells.

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.

Trimethoprim may be used as a pharmaceutical reference standard for the determination of the analyte in pharmaceutical formulations by chromatography and visible and UV spectrophotometry.

Primarily used as an antibacterial agent. Dihydrofolate reductase inhibitor with selectivity for the prokaryote enzyme.

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 LRAA7172 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.

Safety Information

• Pictograms: GHS08,GHS07
• Signal Word: Warning
• Hazard Statements: H302,H361d
• Precautionary Statements: P202 - P264 - P280 - P301 + P312 - P308 + P313 - P405
• Hazard Classifications: Acute Tox. 4 Oral - Repr. 2
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable