solvent
7 years ago by mcw (63)
$31.23
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那些1ml 5ml的有机配体。是不是更贵哈哈
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哈哈,有手性的那些500毫克已經好貴了
好像有很多化學人呢 XDD
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本科学的那些,到了phd毕业早忘光了。
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😂
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头一次听说这种试剂,学习了,感谢分享!
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:DDDD 這麽貴的東西能省下就好了 XDD
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那个科学摄影比赛食物结束了吗?我终于想到拍什么了
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還有21.5 小時才結束啊!!香港時間 23/1/18 2359 結束
加油加油 ;)
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好的好的,你怎么还不睡,我这是睡醒了呢,早点休息吧。
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要喝了這個比茅台還貴的液體!!!(說笑)😂😂😂😂
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怎麽 @aaronli 上身了 😂😂
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自從做錯事後,我從此都沒有再喝茅台了...
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所以最錯的事是沒喝茅台!!
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飲!🍻🍻🍻
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Prices of deuterated solvents are just crazy!
http://www.deutero.de/en/nmr-solvents.html
I miss the lab
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Yes, I was really suprized the price difference between deuterated chloroform and deuterated DCM, which is unbelieveable
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our professor always was mad when we had to use deuterated DCM or toluene-D8. But sometimes theres no other way. nmr spectra of badly solved molecules are useless
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Definitely! Usually the problem is solubility so I have to use alternatives.
d6-benzene was slightly cheaper than I expected ~ but to do benzylic proton exchange to deuterium should be much more challenging so the price is higher (?)
(I expect d6-benzene was made by hydrogenation and dehydrogenation with D2 gas on some catalyst)
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When I remember correcly for benzene it is possible to just stir or boil(?) it with D2SO4 for proton exchange. A colleague tried this way for xylene but just ended with a messy black slime...
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oh I didnt expect D2SO4 is strong enough!!!
Haha black slime, so sad ~
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23:00我终于写完我的冻豆腐。。。我是最后一个交作业的吧哈哈
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