Thyroxine-13C6, 1mg Back Catalog number: T425602 Manufacturer: TORONTO RESEARCH CHEMICALS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-H40 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 682489 3-Heptanone, 1000mg Price on request 1137.17-K-ME n-Heptadecane Price on request