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Key Documents

Y0001379

Levonorgestrel impurity B

European Pharmacopoeia (EP) Reference Standard

Synonym(s):

13-Ethyl-17-hydroxy-18,19-dinor-17-α-pregn-5(10)-en-20-yn-3-one

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About This Item

Empirical Formula (Hill Notation):
C21H28O2
CAS Number:
19914-67-1
Molecular Weight:
312.45
UNSPSC Code:
41116107
NACRES:
NA.24

grade

pharmaceutical primary standard

API family

levonorgestrel

manufacturer/tradename

EDQM

application(s)

pharmaceutical (small molecule)

format

neat

InChI

1S/C21H28O2/c1-3-20-11-9-17-16-8-6-15(22)13-14(16)5-7-18(17)19(20)10-12-21(20,23)4-2/h2,17-19,23H,3,5-13H2,1H3/t17-,18-,19+,20+,21+/m1/s1

InChI key

QCMLVDXPKCBMFQ-MJCUULBUSA-N

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the Issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Levonorgestrel impurity B EP Reference standard, intended for use in laboratory tests only as specifically prescribed in the European Pharmacopoeia.

Packaging

The product is delivered as supplied by the issuing Pharmacopoeia. For the current unit quantity, please visit the EDQM reference substance catalogue.

Other Notes

Sales restrictions may apply.

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Cheng Li et al.
The Journal of pathology, 248(1), 77-87 (2019-01-12)
Previous studies revealed the increasing risk of tubal pregnancy following failure of levonorgestrel (LNG)-induced emergency contraception, which was attributed to the reduced ciliary motility in response to LNG. However, understanding of the mechanism of LNG-induced reduction in the ciliary beat

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