See Also: Masamune(encyclopedia)
penicillanic(dictionary)
penicillanic acid(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Orthomolecular medicine (orthomolecular nutritional medicine, orthomolecular therapy)(health)
medicine(dictionary)
medicine(1)(dictionary)
medicine(2)(dictionary)
medicine man(encyclopedia)

penicillanic acid (medicine) and Masamune (sh)


penicillanic acid (medicine)


penicillanic acid
<chemical> 3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.1)heptane-2-carboxylic acid. A building block of penicillin, devoid of significant antibacterial activity.

Pharmacological action: penicillins.

Chemical name: 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-, (2S-cis)-


Masamune (sh)




orig. Okazaki Goronyudo

born 1264?, Japan
died 1343?, Kamakura

Japanese swordsmith.

Masamune was appointed chief swordsmith by the emperor Fushimi in 1287. He founded the Soshu school of swordmaking, in which blades were made entirely of steel and hardened throughout. It marked an important advance in metallurgical technique that was significantly ahead of the technical level in Europe or elsewhere in Asia.