Author Topic: Catalog Price Request for Two Compounds (Read 3269 times)

PrimoPyro · « **on:** August 02, 2002, 05:14:00 AM »

Can I get someone with a Sigma-Aldrich catalog or some other name-able company's catalog, to tell me what the price/quantity is for these following two compounds? I don't have a Sigma catalog, and Alfa Aesar doesn't carry either of these apparantly, as they are not listed in their catalog.

1.Propyleneimine, CASRN: 75-55-8

2.2,5-dimethoxytoluene, CASRN: 24599-58-4

If they offer several different kinds of the aziridine, the one of interest would preferably be anhydrous in THF or Et2O.

Also, I'd like an opinion on the watched-ness of number 2 above. I know dimethoxybenzaldehyde is suspicious, but what of the toluene? I know it's all guesswork anyway, but certain chemicals are KNOWN for their uses, and some are just probable precursors. So is dimethoxytoluene a known starting precursor to law enforcement?

It should be noted that I will not be purchasing either of these chemicals, so don't tell me not to. Thanks in advance for your help. I appreciate it.

PrimoPyro

acid_egg · « **Reply #1 on:** August 02, 2002, 05:39:00 AM »

1. after currency conversion about $50 100ml
2. can only tell you for 2,3 2,6 3,4 or 3,5 dimethoxytoluene,mine doesnyt have the 2,5.

A chicken is just an eggs way of making another egg.

PrimoPyro · « **Reply #2 on:** August 02, 2002, 05:53:00 AM »

I assume your answer for #1 is a quote of the pure, dry compound?

Are the varying isomers of the dimethoxytoluene all similarly priced, or are they all very different? If they are similar, can you quote me the estimated average price? If they are radically different, can you quote me the most expensive one, and what that would be (which one and how much is it)?

I appreciate your help, its time to nab a few more catalogs over here.

acid_egg · « **Reply #3 on:** August 02, 2002, 06:37:00 AM »

1 is 97%
2 [Edit]2,5 dimethoxytoluene-$150 100g
all rounded up for ease on the eye!

A chicken is just an eggs way of making another egg.

acid_egg · « **Reply #4 on:** August 02, 2002, 06:47:00 AM »

PrimoPyro · « **Reply #5 on:** August 02, 2002, 07:11:00 AM »

You are so helpful. I really do appreciate your help. I will return the favor when I see an opportunity within my grasp.

Thanks.

Kinetic · « **Reply #6 on:** August 02, 2002, 12:33:00 PM »

PP, as I assume acid_egg has done, you can register on Sigma-Aldrich's website. In the UK when you register, nobody contacts you. Anyone can register for information and pricing; you only need to explain yourself if you place an order (not a good idea as I'm sure you'll know).

acid_egg · « **Reply #7 on:** August 02, 2002, 07:24:00 PM »

Actually Kinetic these are from a physical copy but registering is probably more accurate for pricing changes.BTW I should have made clear these are not Sigma-Aldrichs' prices.I'll send you the details.

A chicken is just an eggs way of making another egg.

Rhodium · « **Reply #8 on:** August 02, 2002, 09:10:00 PM »

A better precursor which is even less suspicous (and much cheaper) is 2-methylhydroquinone (also called toluhydroquinone), it is just a methylation away from your desired dimethoxy compound. It is about $10/100g.

PrimoPyro · « **Reply #9 on:** August 02, 2002, 09:14:00 PM »

Then you must add the cost of DMS to that toluhydroquinone as well, as well as any other reagents/solvents needed to perform the reaction. I agree that it shouldnt be suspicious at all, though.

I thought about doing that. Shit, that price you quote is cheaper than for p-nitrotoluene, which is how it would be clandestinely made I assume. Better to just buy it from the source heh. Thats another useless reaction then.

PrimoPyro

PrimoPyro · « **Reply #10 on:** August 05, 2002, 08:22:00 AM »

Thanks for everyone's help. I have another request, if it isn't too much.

I am trying to locate a CASRN for a compound that I cannot locate on the web at all. I have searched chemfinder, google, infotrieve, and SA's catalog, under three names all to no avail.

1.2,N-dimethylaziridine
2.N,2-dimethylaziridine
3.Propylenemethylimine

I'd like to know if it even exists, and if so, what is the CASRN for it? If anyone happens to know who supplies this compound, feel free to PM me with this info if you feel so inclined.

Any help on this is appreciated.

PrimoPyro

Nemo_Tenetur · « **Reply #11 on:** August 05, 2002, 11:20:00 AM »

Could you further specify this compound ? I've done a few months ago some extensive search on methylated pyrrolidines and azetidine. Unfortunately, these compounds are either very expensive, unstable to aqueous/acid conditions and difficlt to synthesize. Do yo mean N-methylazetidine or its 1-methyl or 2-methyl analog ?

Rhodium · « **Reply #12 on:** August 05, 2002, 12:37:00 PM »

I don't think it is commercially available, it is not in any of my speciality chem catalogs, only propyleneimine itself. Make it yourself, see aziridine prep in

Post 278889

(Tricky: "Re: New way to 2C-B (without reductions).", Novel Discourse).

PrimoPyro · « **Reply #13 on:** August 05, 2002, 09:21:00 PM »

That aziridine and 2-methylaziridine both share many characteristics with hydrazine, such as being amutagen, highly toxic, etc. A full range of safety equipment is needed to be present during their synthesis and/or when using them in reactions.

PrimoPyro · « **Reply #14 on:** August 05, 2002, 11:35:00 PM »

Now that I think about it, to do that procedure, I'd need 1-(N-methyl)amino-isopropanol to make the compound I want. Is this compound even available?? I'll search but I think it would just be easier to pay someone to make the 2,N-dimethylaziridine for me.... It cant be too expensive, propyleneimine is only $50/100mL thats not bad for these uses.

PrimoPyro

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