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土霉素

更新時間:2016-06-08

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土霉素,純度高,品牌質(zhì)量、實(shí)驗(yàn)效果好,我們保持著薄利多銷的宗旨,提供給客戶高標(biāo)準(zhǔn)的生化試劑。

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土霉素
Oxytetracycline dihydrate
Cas 號: 【6153-64-6】 M D L: MFCD00003700
土霉素分子式: C22H24N2O9·2H2O 分子量: 496.46
別 名: 堿
98% 100g
97% 25g
97% 5g
性 狀:
質(zhì)量標(biāo)準(zhǔn): 外觀Appearance 結(jié)晶粉末
紅外光譜鑒別Infrared spectrometry 符合
純度Purity 97% (HPLC)
比旋光度Specific rotation [a]20/D +203.0 ~ +216.0°(c=1, 0.1 M HCl)
水分Water 6 ~ 9%
吸收度353nm(1%,1cm) 290-310
雜質(zhì)吸收度430nm ≤0.25
雜質(zhì)吸收度490nm ≤0.20
重金屬Heavy metals ≤50ppm
貯 存: 阻止aminoacyl-tRNA結(jié)合到30S亞單元上,抑制蛋白質(zhì)合成(延長期)。
抗菌譜: 革蘭氏陰性和陽性菌
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