IsoSciences offers over 300 steroids including the largest selection of ¹³C labeled internal standards available on the market today.

All steroids come with complete Certificate of Analysis, including a purity figure, NMR confirmation, mass spec identification and the isotope incorporation.

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Isotope Labels: Unlabelled Carbon-13 Nitrogen-15 Deuterium

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18027
11-Oxotestosterone Glucuronide Sodium Salt
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18026
11β-Hydroxytestosterone Glucuronide Sodium Salt
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18103
17α-Methyl-5α-androstan-17β-ol-3-one-[d3]
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18104
17α-Methyl-5α-androstan-17β-ol-3-one-[d5]
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17172
17α-Methyl-5β-androstan-3α,17β-diol-[d₃]
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S9124UNL CAS:
50-28-2
17β-Estradiol
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18006
20α-Dihydroprogesterone-[¹³C₅]
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17124
5α-Androst-11β,17β-diol-3-one
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17175
5α-Androst-11β,17β-diol-3-one-[d₅]
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17171
5α-Androst-16-ene-3-one-[d₄]
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Showing 1 to 10 out of 338

ANALYTICAL CAPABILITIES

PURITY
Access by HPLC, ELSD or GC
STRUCTURAL
Determination by ¹H and ¹³C NMR
ISOTOPE INCORPORATION
Calculated by LC-MS/MS, LC-MS or GC-MS

INDUSTRY APPLICATIONS

Clinical and diagnostic labs utilizing mass spec for quantification and analysis
Researching purity and impurity profiles in drugs
R & D in pharmaceutical industries
Standards for environmental analysis
Clinical research

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