Impurity Standards

IP, USP and EP Compliant

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ESTRADIOL

Ethinyl Estradiol Impurity J (1-Methyl EthinylEstradiol)

CAT No.-
CAS No.15071-66-6
Mol. F.C21H26O2
Mol. W.310.44
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ESTRADIOL

Ethinyl Estradiol EP Impurity M

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CAS No.3240-39-9
Mol. F.C21H26O2
Mol. W.310.44
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ESTRADIOL

Estradiol Valerate EP Impurity H (2-Valeryl-17-beta-Estradiol-17-Valerate)

CAT No.-
CAS No.1421283-56-8
Mol. F.C28H40O4
Mol. W.440.62
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ESTRADIOL

Ethynylestradiol Impurity 1

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CAS No.-
Mol. F.C22H26O4
Mol. W.354.45
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ESTRADIOL

Estradiol Valerate Impurity I

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CAS No.-
Mol. F.C49H66O5
Mol. W.735.07
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ESTRADIOL

Ethinyl Estradiol EP Impurity B

CAT No.-
CAS No.1231-96-5
Mol. F.C20H22O2
Mol. W.294.39
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ESTRADIOL

Ethinylestradiol Impurity M

CAT No.-
CAS No.1818-11-7
Mol. F.C21H24O2
Mol. W.308.42
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ESTRADIOL

Ethynyl Estradiol EP Impurity L (17-epi-Estradiol)

CAT No.-
CAS No.57-91-0
Mol. F.C18H24O2
Mol. W.272.39
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ESTRADIOL

Estradiol EP Impurity B-d3 (Ethinyl Estradiol EPImpurity L-d3)

CAT No.-
CAS No.57-91-0 (non-labelled)
Mol. F.C18H21D3O2
Mol. W.275.41
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ESTRADIOL

Estradiol Hemihydrate EP Impurity C (4-MethylEstradiol)

CAT No.-
CAS No.6171-48-8
Mol. F.C19H26O2
Mol. W.286.42
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