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Merck
CN

Y0000664

Methotrexate impurity E

European Pharmacopoeia (EP) Reference Standard

Synonym(s):

4-{[(2,4-Diaminopteridin-6-yl)methyl]methylamino}benzoic acid

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About This Item

Empirical Formula (Hill Notation):
C15H14N7O2
CAS Number:
19741-14-1
Molecular Weight:
324.32
UNSPSC Code:
41116107
NACRES:
NA.24

Key Documents

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Product Name

Methotrexate impurity E, European Pharmacopoeia (EP) Reference Standard

SMILES string

N(Cc2nc3c(nc(nc3N)N)nc2)(C)c1ccc(cc1)C(=O)O

InChI

1S/C15H15N7O2/c1-22(10-4-2-8(3-5-10)14(23)24)7-9-6-18-13-11(19-9)12(16)20-15(17)21-13/h2-6H,7H2,1H3,(H,23,24)(H4,16,17,18,20,21)

InChI key

LWCXZSDKANNOAR-UHFFFAOYSA-N

grade

pharmaceutical primary standard

API family

methotrexate

manufacturer/tradename

EDQM

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

Related Categories

Packaging

The product is delivered as supplied by the issuing Pharmacopoeia. For the current unit quantity, please visit the EDQM reference substance catalogue.

Application

Methotrexate impurity E EP Reference standard, intended for use in laboratory tests only as specifically prescribed in the European Pharmacopoeia.

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the Issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Other Notes

Sales restrictions may apply.

pictograms

Skull and crossbonesHealth hazard
GHS06,GHS08

signalword

Danger

Hazard Classifications

Acute Tox. 3 Oral - Eye Irrit. 2 - Muta. 2 - Repr. 1B - Skin Irrit. 2

Storage Class

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

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

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R G Smith et al.
Biomedical mass spectrometry, 8(4), 144-148 (1981-04-01)
Folic acid and several analogs have been characterized as their permethylated derivatives. These derivatives are readily evaporated from the solid probe and provide spectra with abundant molecular ions and characteristic fragment ions. This method has been used to confirm the
L M DeAngelis et al.
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 14(7), 2145-2149 (1996-07-01)
This study was a pilot project to assess the safety and efficacy of carboxypeptidase G2 (CPG2) rescue from high-dose (HD) methotrexate (MTX) in patients with recurrent cerebral lymphoma. Four patients with recurrent primary CNS lymphoma (PCNSL) were studied. Patients received
Commentary.
Michael C Milone
Clinical chemistry, 56(12), 1795-1796 (2010-12-02)
M J Ahern et al.
Annals of the rheumatic diseases, 50(7), 477-480 (1991-07-01)
Liver tissue from 16 patients with rheumatoid arthritis was studied. The patients had received low dose methotrexate weekly for a minimum of 12 months between two liver biopsies. The progression of pericellular fibrosis was measured by computerised image analysis. Extracts
An investigation into the source of the deglutamated metabolites of methotrexate in patients treated with high dose infusions.
M J Stewart et al.
Annals of clinical biochemistry, 23 ( Pt 2), 210-215 (1986-03-01)
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