Levonorgestrel
[CAS# 797-63-7]

Identification

• Classification: API >> Hormone and endocrine-regulating drugs >> Birth control pills
• Name: Levonorgestrel
• Synonyms: D(-)-13beta-Ethyl-17alpha-ethynyl-17beta-hydroxygon-4-en-3-one
• Molecular Formula: C₂₁H₂₈O₂
• Molecular Weight: 312.45
• CAS Registry Number: 797-63-7
• EC Number: 212-349-8

Properties

• Melting point: 206 °C

Safety Data

• Hazard Symbols: Xn
• Risk Statements: R20/21/22;R40
• Safety Statements: S22;S36

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Carcinogenicity	Carc.	2	H351
Reproductive toxicity	Repr.	1A	H360
Acute toxicity	Acute Tox.	4	H312
Acute toxicity	Acute Tox.	4	H332
Reproductive toxicity	Lact.	-	H362
Reproductive toxicity	Repr.	1B	H360
Acute toxicity	Acute Tox.	4	H302
Reproductive toxicity	Repr.	2	H361
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2	H319
Skin irritation	Skin Irrit.	2	H315