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Merck

PHR1056

Trimetoprim

Pharmaceutical Secondary Standard; Certified Reference Material

Sinónimos:

2,4-Diamino-5-(3,4,5-trimetoxibencil)pirimidina, NSC 106568

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About This Item

Fórmula empírica (notación de Hill):
C14H18N4O3
Número CAS:
738-70-5
Peso molecular:
290.32
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329823086
EC Number:
212-006-2
Beilstein/REAXYS Number:
625127
MDL number:
MFCD00036761

Nombre del producto

Trimetoprim, Pharmaceutical Secondary Standard; Certified Reference Material

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

SMILES string

COc1cc(Cc2cnc(N)nc2N)cc(OC)c1OC

grade

certified reference material
pharmaceutical secondary standard

agency

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

Quality Level

300

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Categorías relacionadas

Application

Se utiliza principalmente como un antibacteriano. Inhibidor de la dihidrofolato reductasa con selectividad por la enzima procariota.
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.

Analysis Note

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

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.

Other Notes

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.
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 LRAA7172 in the slot below. This is an example certificate only and may not be the lot that you receive.

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Repr. 2

Clase de almacenamiento

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. Is Trimethoprim stable in solution?

    Triemethoprim in a solution of 52% N,N dimethylacetamide:48% propylene glycol at 50 mg/ml is stable when stored at 25° C. There is only a 10% degradation of trimethoprim under these conditions after 885 days.

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Determination of sulfamethoxazole and trimethoprim in pharmaceuticals by visible and UV spectrophotometry
Shamsa F and Amani L
Iranian Journal of Pharmaceutical Research : IJPR, 537(1-2), 31-36 (2010)
Comparison of trimethoprim molecularly imprinted polymers in bulk and in sphere as the sorbent for solid-phase extraction and extraction of trimethoprim from human urine and pharmaceutical tablet and their determination by high-performance liquid chromatography
Hu SG, et al.
Analytica Chimica Acta, 537(1-2), 215-222 (2005)
Trimethoprim resistance.
Huovinen P
Antimicrobial Agents and Chemotherapy, 31(10), 1451-1456 (1987)
Simultaneous LC determination of trimethoprim and sulphamethoxazole in pharmaceutical formulations
Akay C and Ozkan SA
Journal of Pharmaceutical and Biomedical Analysis, 30(4), 1207-1213 (2002)
Ivan Senta et al.
Water research, 47(2), 705-714 (2012-11-29)
Comprehensive study on the occurrence and fate of several classes of antimicrobials, including sulfonamides, trimethoprim, fluoroquinolones and macrolides, in Croatian municipal wastewaters was performed using an integrated approach, which comprised analysis of both dissolved and particulate fractions. A nation-wide screening
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