J. Jacob Schlaepfer

• Über (1)-Phenyl-(3)-methyl-(4)-nitro-(5)-pyrazolon und (1)-Phenyl-(3)-methyl-(4)-isonitro-(5)-pyrazolon
• Über (1)-phenyl-(3)-methyl-(4)-nitro-(5)-pyrazolon und (1)-phenyl-(3)-methyl-(4)-isonitroso-(5)-pyrazolon