Amino acid analysis: aqueous dimethyl sulfoxide as solvent for the ninhydrin reaction.

The Journal of biological chemistry (1968-12-10)

S Moore

MATERIALS

Product Number

Brand

Product Description

Sigma-Aldrich

Lithium acetate dihydrate, BioUltra, ≥99.0% (calc. based on dry substance, NT)

Sigma-Aldrich

Dimethyl sulfoxide, anhydrous, ≥99.9%

Sigma-Aldrich

Dimethyl sulfoxide, suitable for HPLC, ≥99.7%

Sigma-Aldrich

Dimethyl sulfoxide, ACS reagent, ≥99.9%

Sigma-Aldrich

Dimethyl sulfoxide, puriss. p.a., ACS reagent, ≥99.9% (GC)

Sigma-Aldrich

Dimethyl sulfoxide, puriss. p.a., dried, ≤0.02% water

Sigma-Aldrich

Ninhydrin Reagent, 2% Solution

Sigma-Aldrich

Ninhydrin, ACS reagent