Sigma-Aldrich
牛磺酸, suitable for cell culture, meets USP testing specifications
Sigma-Aldrich
铜, powder, 99.999% trace metals basis
Sigma-Aldrich
硅, powder, −325 mesh, 99% trace metals basis
Sigma-Aldrich
L -胱氨酸, from non-animal source, meets EP testing specifications, suitable for cell culture, 98.5-101.0%
Sigma-Aldrich
L -胱氨酸, ≥98% (TLC), crystalline
Sigma-Aldrich
S-(5′-腺苷)-L-高半胱氨酸, crystalline
Sigma-Aldrich
铜, powder, <425 μm, 99.5% trace metals basis
Sigma-Aldrich
铜, foil, thickness 0.25 mm, 99.98% trace metals basis
Sigma-Aldrich
锡, ≥99%, powder
Sigma-Aldrich
锰, powder, ≥99.9% trace metals basis
Supelco
牛磺酸, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
锌, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.9%, granular
Sigma-Aldrich
铜, wire, diam. 1.0 mm, ≥99.9%
Sigma-Aldrich
硅, nanopowder, <100 nm particle size (TEM), ≥98% trace metals basis
Sigma-Aldrich
硅, wafer (single side polished), <100>, N-type, contains no dopant, diam. × thickness 2 in. × 0.5 mm
Sigma-Aldrich
DL-同型半胱氨酸, ≥95% (titration)
Sigma-Aldrich
L -胱氨酸, ≥99.7% (TLC)
Sigma-Aldrich
锡, powder, <150 μm, 99.5% trace metals basis
Sigma-Aldrich
锌, foil, thickness 0.25 mm, 99.9% trace metals basis
Sigma-Aldrich
铬, powder, ≥99% trace metals basis, <45 μm
Sigma-Aldrich
(+)-α-生育酚, from vegetable oil, Type V, ~1000 IU/g
Sigma-Aldrich
钴, powder, 2 μm particle size, 99.8% trace metals basis
Sigma-Aldrich
铜, powder (spheroidal), 10-25 μm, 98%
Sigma-Aldrich
铜, powder (dendritic), <45 μm, 99.7% trace metals basis
Sigma-Aldrich
锡, nanopowder, <150 nm particle size (SEM), ≥99% trace metals basis
Sigma-Aldrich
(+)-α-生育酚, Type VI, from vegetable oil, liquid (≥0.88M based on potency, density and molecular wt.), BioReagent, suitable for insect cell culture, ≥1000 IU/g
Sigma-Aldrich
铋, powder, −100 mesh, 99% trace metals basis
Sigma-Aldrich
铜, nanopowder, 40-60 nm particle size (SAXS), ≥99.5% trace metals basis