Supplier Page from Thermo Fisher Scientific for Bromothymol Blue sodium salt, 0.04% w/v aq. soln
2-Mercaptobenzothiazole, 95% from Thermo Fisher Scientific
3-Methoxybenzyl alcohol, 98% from Thermo Fisher Scientific
Epichlorohydrin, 99% from Thermo Fisher Scientific
L-Serine, 99% from Thermo Fisher Scientific