CAS No.: 133073-73-1 Synonyms: 4-Amino-10-methylfolic acid hydrate; L-4-Amino-N 10 -methylpteroylglutamic acid hydrate; L-Amethopterin hydrate; Antifolan hydrate; MTX hydrate; Methylaminopterin hydrate Formula: C₂₀H₂₂N₈O₅ ¬? xH₂O …