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Citations for: US Pharmacopoeia 40 (2017): Levonorgestrel.
Entry Type
Name
Value
Parent Entry
Physical & Chemical Properties Data Field
Melting Point
USP: 232-239° C, but the range between start and end of melting does not exceed 4° C
IARC: 235-237 °C
Levonorgestrel (API)
Physical & Chemical Properties Data Field
Specific Optical Rotation
USP: Between -30 and -35°, 20 mg/mL in chloroform
-32.4 °C in chloroform
Levonorgestrel (API)
Physical & Chemical Properties Data Field
Storage Conditions
20 to 25° C (68 to 77° F). Preserve in well-closed, light-resistant containers.
Levonorgestrel (API)
Analytical Method
Levonorgestrel USP Limit of Ethynyl Group
N/A
Analytical Method
Levonorgestrel USP Chromatographic Purity
N/A
Analytical Method
Levonorgestrel USP Assay
N/A
Impurity
11-Methylene Lynestrenol
N/A
Impurity
13-Ethyl-11-methylenegon-4-en-17-one
N/A