Supplier: Pyroglutamic acid, glutamic acid, gly gly, pyroglutaminol, theanine, tyrosine, leucine and derivates of them., chiral amino acids : d (histidine, pyroglutamic acid, glutamic acid, theanine, tyrosine, leucine), racemic amino acids : dl (tyrosine, valine, leucine, arginine hcl), protected amino acids (n acetyl, boc, fmoc, cbz, ester ) and other derivatives, amino composite salt(l arg l asp, l arg l pyr, l lys l glu), acetyl l glutamic acid, acetyl d glutamic acid, acetyl d leucine, , glycylglycine, intermediates of tirzepatide, semaglutide, ledipasvir, larotrectinib, velpatasvir, baricitinib, tipiracil, voxilaprevir, vildagliptin, , telegliptin, linagliptin, lacosamide, heterocyclic