Methotrexate (CAS 59-05-2) Sigma-Aldrich

Methotrexate molecular structure — Molecular structure

The Sigma-Aldrich catalog lists 5 grades and pack sizes of Methotrexate (CAS 59-05-2). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS	59-05-2
Molecular formula	C20H22N8O5
Molecular weight	454.45 g/mol
IUPAC name	(2S)-2-[[4-[(2,4-diaminopteridin-6-yl)methyl-methylamino]benzoyl]amino]pentanedioic acid
Synonyms	Amethopterin · Rheumatrex · Metatrexan · Hdmtx · Ledertrexate · Methylaminopterinum

Safety & Hazards (GHS) Danger

Acute toxic

Health hazard

H301 Toxic if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
H360 May damage fertility or the unborn child

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand	Product / grade	Code
Sigma	METHOTREXATE	M1000000 PHR1396-1G	Request Quote
Sigma	METHOTREXATE FOR PEAK IDENTIFICATION	Y0000602	Request Quote
Sigma	METHOTREXATE FOR SYSTEM SUITABILITY	Y0001668	Request Quote
Sigma	METHOTREXATE, UNITED STATES PHARMACOPEIA	1414003-500MG	Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.