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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18111
Cortisol-[d4]-21-glucuronide
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18110
Dehydroepiandrosterone-[d6]-3-o-glucuronide
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18061
Dihydrotestosterone-[13C3] Tridecanoate
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17086
5α-Androstane-3,17-dione-[¹³C₃]
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S9124 CAS:
1261254-48-1
17β-Estradiol-[2,3,4-¹³C₃]
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10157 CAS:
1255639-56-5
Estriol-[¹³C₃] (16α-Hydroxyestradiol-[2,3,4-¹³C₃])
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16148
11-Hydroxyandrostenedione-[9,11,12,12-²H₄]
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S16999-1.0
Testosterone-[d₈] (Solution)
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S14321UNL-1.0 CAS:
1098-45-9
Pregnanetriol (Solution)
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16144UNL CAS:
53187-98-7
11-Ketotestosterone
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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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