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sources of l-cysteine
Update: an article in Mother Jones said that human hair has alot more cysteine than bird feathers an ... |
11-4-2017 at 23:56
by: soma |
sources of l-cysteine
I've read that l-cysteine can be extracted from bird feathers, microbial fermentation, and hog hair. ... |
10-4-2017 at 00:39
by: soma |
tlc rf to lc
Hopefully this will be clearer.
A video on chromatography at the MIT Chem site ( https://www.yout ... |
22-3-2017 at 01:59
by: soma |
tlc rf to lc
I have seen it recommended to adjust the eluent composition so that the material you want is at .3 r ... |
20-3-2017 at 23:08
by: soma |
type of column for liquid chormatography?
Short and wide - or long and thin?
Advantages of using a burette?
I want to separate a 1 - 2 g ... |
22-1-2017 at 03:09
by: soma |
after packing chromatography column
Would there be a problem if after packing the column (for gravity or flash) it is left for many hour ... |
13-1-2017 at 01:22
by: soma |
best way to pack a chromatograpy column
Thanks for the responses.
Another question.
Would there be a problem in preparing the column a ... |
12-1-2017 at 02:23
by: soma |
problem with thermocouple thermometer
I got the thermocouple you mentioned. I was able to scavenge some metal prongs from an adapter that ... |
7-1-2017 at 02:38
by: soma |
best method to analyze amino acids
It looks like I've succeeded in synthesizing n-acetylcysteine amide using microwave synthesis. (Veri ... |
14-12-2016 at 03:22
by: soma |
checkmark symbol
Is this a symbol in chemistry or math?
[file]55074[/file] |
29-11-2016 at 00:04
by: soma |
best way to pack a chromatograpy column
I've seen several methods: slurry; dry pack - adding adsorbent 1st , then eluant - or adding eluant ... |
18-11-2016 at 02:50
by: soma |
solubility
I recently received a sample of n-acetylcysteine amide to use as a standard for analysis. It came wi ... |
28-10-2016 at 22:14
by: soma |
tlc streaks from dipping
I got some streaksafter dipping a tlc plate in stain. Any suggestions how to prevent this?
[file] ... |
20-10-2016 at 03:40
by: soma |
vanillin stain for tlc
Yes, the iodine faintly shows the urea and imidazole. |
17-10-2016 at 23:00
by: soma |
difference between forms of tocopherol
Thanks. I was looking at the side chain for differences and wasn't familiar with chromane. As soon a ... |
16-10-2016 at 02:22
by: soma |
difference between forms of tocopherol
I've been trying to understand the difference tween the different forms of tocopherol and their isom ... |
16-10-2016 at 00:15
by: soma |
vanillin stain for tlc
The vanillin is showing urea and imidazole but not n-acetylcysteine or nac-amide. Iodine shows the n ... |
11-10-2016 at 03:20
by: soma |
vanillin stain for tlc
Thanks.
I was actually using one of the recipes from a poster on that curly arrow thread. I trie ... |
7-10-2016 at 00:50
by: soma |
vanillin stain for tlc
The directions I've found recommend ethanol, (50 ml), sulfuric (.3 ml) and vanillin (1 gm). Has anyo ... |
7-10-2016 at 00:11
by: soma |
purity of vanillin for tlc stain
I'm planning on trying vanillin as a tlc stain. I've found some 98% vanillin available and also 100% ... |
26-9-2016 at 03:27
by: soma |
problem with thermocouple thermometer
[rquote=459552&tid=68708&author=Praxichys]
For pyro applications, I have had good luck wi ... |
31-8-2016 at 14:34
by: soma |
problem with thermocouple thermometer
I tried putting the metal end of the probe in a gas flame and it went up quickly past 300C without t ... |
31-8-2016 at 14:23
by: soma |
problem with thermocouple thermometer
[rquote=459544&tid=68708&author=Magpie]Please show us a picture of this instrument.[/rquote] ... |
31-8-2016 at 14:22
by: soma |
problem with thermocouple thermometer
I recently got a thermocouple thermometer from ebay (doubleways co.). It has a type K thermocouple a ... |
31-8-2016 at 00:29
by: soma |
determining chromatography column size
I want to purify about 25 gms of product by chromatography. One book says to use a column that is ab ... |
25-8-2016 at 23:27
by: soma |
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