BioSciences - Polysciences, Inc.

Stable Isotope Compounds
Cortisol-[2H4]; methanol solution (1 mL) [73565-87-4; Unlabeled: 50-23-7] CHP7af ......
MW 366.4845 C 21 H 30 O 5
Isotopic Incorporation: 98% 2H
Purity: >98%
Cortisol; methanol solution (1 mL) [50-23-7] CHP7af ..............................
MW 362.4599 C 21 H 30 O 5
Purity: >98%
Cortisone [53-06-5] H3af ......................................................
MW 360.444 C 21 H 28 O 5
Purity: >98%
Cortisone-[2H7] [1261254-36-7 Unlabeled:53-06-5] H3af ............................
MW 367.4872 C 21 H 28 O 5
Isotopic Incorporation: 98% 2H
Purity: >98%
Stable-isotope labeled compounds used as internal standards provide the best method
to correct for competing ionization processes when you use mass spectroscopy (LCMS,
GCMS, MS/MS) to analyze real-world samples. For samples obtained from biological and
environmental sources, matrix effects can dramatically change the ionization behavior
of the target analytes. Competing components can cause the signal due to the target
analyte to be either enhanced or reduced, thereby providing results that are either
artificially higher or lower than they should be. A few materials that may cause these
effects include ionic species, buffer ions, and high concentrations of non-target analytes.
When added to the sample prior to analysis, stable-isotope labeled compounds provide
the ability to account for all of these competing processes while providing no interference
with the desired analyte signal.
Catalog Size
25167-0.1 100 µg/ml
25167-1 1 mg/ml
25168-0.1 100 µg/ml
25168-1 1 mg/ml
25170-1 1 mg
25170-5 5 mg
25170-10 10 mg
25169-1 1 mg
25169-5 5 mg
25169-10 10 mg
For more information please call (800) 523-2575 or visit: polysciences.com 223