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NMR purity analysis...?
So grad student I worked with shows me 9 peaks on an nmr spectrum that correlate to our product of i ... |
14-2-2014 at 18:13
by: GreenD |
TFA Formation - How?
We have an LC/MS in our lab and its been plaguing us with this TFA signal for some time.
We know ... |
1-9-2013 at 08:42
by: GreenD |
Real chemistry is dying out, why?
uh - on this note I came from a lab that used 'brute force chemistry'
It was really old technique ... |
11-7-2013 at 16:29
by: GreenD |
N-methylformamide problem, can any brains solve??
Not sure but it would seem to me pure formamide would be the lower bp, while the higher is a [b]solu ... |
19-6-2013 at 13:50
by: GreenD |
Dean Stark - Separating Acetone & Water? What?
Ran the expt verbatim, however only had a http://www.rightpricechemicals.com/media/catalog/product/c ... |
12-6-2013 at 09:30
by: GreenD |
Dean Stark - Separating Acetone & Water? What?
"Investigations on heterogeneously catalysed condensations of glycerol to cyclic acetals"
[i]The ... |
11-6-2013 at 16:00
by: GreenD |
Vacuum Oven Parts?
Hey all,
I have a napco 5831 vacuum oven. The thing 'turns on' that is - the indicator light turns ... |
3-6-2013 at 11:10
by: GreenD |
Amazon experiences
dudadiesel is legit. have sulfuric from them |
3-6-2013 at 11:06
by: GreenD |
TLC Reference paper
Ok, thanks. I don't see the necessity of doing this, but understand it now, at least. |
3-6-2013 at 10:52
by: GreenD |
TLC Reference paper
Need help understanding something again; odd description of developing TLC, in context they are tryi ... |
31-5-2013 at 10:16
by: GreenD |
NMR help
[rquote=285302&tid=24188&author=anoopai]Got from extract[/rquote]
extract of what... seriou ... |
24-5-2013 at 11:10
by: GreenD |
A challenge... how to get this product
Another Question (Even if it falls on deaf ears):
From above:
This sodium salt (21-5g.) was mixe ... |
24-5-2013 at 10:15
by: GreenD |
NMR help
So you just scraped something off the bottom of your lab bench and put it in an NMR tube?
How did ... |
22-5-2013 at 12:40
by: GreenD |
Explosives and Entropy
maybe off topic but a couple years ago my head researcher told me that there is a ratio of
N+Cl+O : ... |
22-5-2013 at 12:38
by: GreenD |
A challenge... how to get this product
Thank you very much deathtillation - that was very informative. Below is my procedure. (Replaced PCl ... |
15-5-2013 at 15:06
by: GreenD |
Chlorination Questions
I have come across perhaps a dozen papers describing chlorination of carboxylic and sulfuric acids ( ... |
15-5-2013 at 12:28
by: GreenD |
MS of Peptide - "fingerprint"
In MS spectra, you can find that there is this fingerprint for proteins. We found one yesterday, but ... |
10-5-2013 at 15:22
by: GreenD |
.1 M Water?
I am trying it your method today. Previously I just decided to throw in a 1:2 eq h2o:etoh, and the r ... |
6-5-2013 at 12:15
by: GreenD |
.1 M Water?
If only they would have thrown in "respectively" |
6-5-2013 at 10:11
by: GreenD |
Solid-Liquid Azeotropic Distillation
This paper
http://www.ncbi.nlm.nih.gov/pubmed/18498150
describes a procedure:
"The product was ... |
25-4-2013 at 14:11
by: GreenD |
.1 M Water?
Well the paper literally skims over this, as it is a "general procedure" and says
"Reagent A - 1eq ... |
24-4-2013 at 19:57
by: GreenD |
.1 M Water?
Bit confused.
Paper calls for a solution of reagents - (1eq and 1.2 eq - not that it matters) but ... |
23-4-2013 at 14:05
by: GreenD |
Physical Chemistry Software
Hey all.
I'm wondering if anyone has preferences for molecular modeling software. I have a molecule ... |
16-4-2013 at 09:34
by: GreenD |
5000mL distillation
depends... do you have 2 setups?
If you have two set ups the 2x2000mL is going to go at less than h ... |
3-4-2013 at 23:26
by: GreenD |
drying tube... odd configuration
I don't get it, whats the point of the curvature |
3-4-2013 at 23:24
by: GreenD |
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