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25-Hydroxyvitamin d3-[d3]

4-Methoxy-[13c,d3]-estradiol

2-Methoxy-[13c,d3]-estradiol

2-Methoxy-[13c,d3]-estrone

P-cresol sulfate-[d7] potassium salt (p-tolyl sulfate-[d7] potassium salt)

Progesterone-[2,3,4-13c3]

Pyridoxal-[d3] (vitamin b6-[d3])

Pyridoxamine-[d3] dihydrochloride (vitamin b6-[d3])

Pyridoxine-[d3] hcl (vitamin b6-[d3])

Riboflavin-[13c4,15n2] (vitamin b2-[13c4,15n2])

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