L-Histidine,ReagentPlus, >=99% (TLC)

L-Histidine monohydrochloride monohydrate,>=98% (HPLC)

Hexadecyltrimethylammonium bromide,BioXtra, >=99%

Hypoxanthine,>=99.0%

Sodium hippurate hydrate,>=99%

4-Hydroxybenzhydrazide,>=97%

L-Isoleucine,reagent grade, >=98% (HPLC)

Indole,>=99%

Inosine,>=99% (HPLC)

Iodoacetic acid,>=98.0% (T)

Imidazole,Molecular Biology, >=99% (titration)

Iodoacetamide,>=99% (NMR), crystalline