Impurity Standards

IP, USP and EP Compliant

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ESTRADIOL

Estradiol Valerate EP Impurity C

CAT No.-
CAS No.95959-20-9
Mol. F.C23H30O3
Mol. W.354.49
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ESTRADIOL

Ethinyl Estradiol EP Impurity G

CAT No.-
CAS No.38002-18-5
Mol. F.C20H22O3
Mol. W.310.40
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ESTRADIOL

Ethynylestradiol EP Impurity E (6-alpha-HydroxyEthynylestradiol)

CAT No.-
CAS No.27521-34-2
Mol. F.C20H24O3
Mol. W.312.41
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ESTRADIOL

Estradiol Hemihydrate EP Impurity D (delta-9(11)-Estradiol)

CAT No.-
CAS No.791-69-5
Mol. F.C18H22O2
Mol. W.270.37
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ESTRADIOL

Ethinylesteradiol Impurity L

CAT No.-
CAS No.-
Mol. F.C18H24O2
Mol. W.272.39
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ESTRADIOL

Estradiol Valerate EP Impurity E (3,17-DivalerateEstradiol)

CAT No.-
CAS No.63042-28-4
Mol. F.C28H40O4
Mol. W.440.62
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ESTRADIOL

Estradiol Valerate EP Impurity F (17-ButyrateEstradiol)

CAT No.-
CAS No.18069-79-9
Mol. F.C22H30O3
Mol. W.342.48
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ESTRADIOL

Estradiol Valerate EP Impurity B (3-ValerateEstradiol)

CAT No.-
CAS No.21881-45-8
Mol. F.C23H32O3
Mol. W.356.51
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ERYTHROMYCIN

Erythromycin Impurity 6

CAT No.-
CAS No.1460313-67-0
Mol. F.C41H74N2O16
Mol. W.851.04
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ERYTHROMYCIN

Erythromycin Impurity 7

CAT No.-
CAS No.119699-81-9
Mol. F.C49H96N2O14Si2
Mol. W.993.48
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