Researching Relationships


(+)-Amethopterin ,Methylaminopterin

Purity Between 98.0% – 102.0%
Molecular Formula / Molecular Weight C20H22N8O5 = 454.44
Physical State (20 deg.C) Solid
CAS RN 59-05-2
Unit Price
1 g 3000
5 g 7500
10 g 9975
Appearance Yellow crystalline powder
Assay 99.38%
Water NMT 12%
Specific Rotation Between +19° to +24°
Residue on ignition NMT 0.1 %
Solubility DMSO; Slightly soluble in dilute hydrochloric acid; Soluble in dil. solution of alkali hydroxides and carbonates



• Pharmaceutical Ingredients (for Research and Experimental Use) is provided as delivered and specified by the issuing Pharmacopoeia.
• The contents of the specifications are subject to change without advance notice. The specification values displayed here are the most up to date values. There may be cases where the product labels display different specification; however, the product quality still meets the latest specification.