[1]JournaloftheAmericanChemicalSociety,1938,vol.60,p.7,9
[1]JournaloftheAmericanChemicalSociety,1938,vol.60,p.7,9
[1]Patent:US2067452,1931,,
[1]Patent:US2298291,1935,
[1]Patent:US2067452,1931,
[1]JournaloftheAmericanChemicalSociety,1938,vol.60,p.7,9
[1]JournalofMedicinalChemistry,1998,vol.41,p.5150-5157
[1]Patent:US2298291,1935,