[q] aspartic acid enantiomers

[YongWan Kim]

Hi,

In these days, I have big problem with a application
note..
 The title is "Separation of  Enantiomers with Automated
 Precolumn Derivatization: D,L Amino Acids"
Everything in this application note is now ready to be used.
 But just two chiral modifier, (3S)-Neomenthylthiol and
 N-bytyryl-L-Cysteine, are not ready.  
I am wondering if I can buy it. If possible, I would like to
buy them. Or who knows about it? 

In the expection of your answers.

Kim