Chemical Safety Data Sheet MSDS / SDS

13-ethyl-17alpha-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one butyrate

Revision Date:2026-05-16Revision Number:1

SECTION 1: Identification of the substance/mixture and of the company/undertaking

Product identifier

Product name: 13-ethyl-17alpha-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one butyrate
CBnumber: CB4900827
CAS: 86679-33-6
EINECS Number: 2892700
Synonyms: Levonorgestrel butyrate;13-Ethyl-17α-(1-oxobutoxy)-18,19-dinorpregn-4-en-20-yn-3-one

Relevant identified uses of the substance or mixture and uses advised against

Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
Uses advised against: none

Company Identification

Company: Chemicalbook
Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
Telephone: 010-86108875

SECTION 2: Hazards identification

GHS Label elements, including precautionary statements

Symbol(GHS)

Signal wordDanger

Precautionary statements

P501 Dispose of contents/container to..…

P405 Store locked up.

P308+P313 IF exposed or concerned: Get medical advice/attention.

P281 Use personal protective equipment as required.

P202 Do not handle until all safety precautions have been read and understood.

P201 Obtain special instructions before use.

P501 Dispose of contents/container to..…

P391 Collect spillage. Hazardous to the aquatic environment

P273 Avoid release to the environment.

P501 Dispose of contents/container to..…

P391 Collect spillage. Hazardous to the aquatic environment

P273 Avoid release to the environment.

P308+P313 IF exposed or concerned: Get medical advice/attention.

P270 Do not eat, drink or smoke when using this product.

P264 Wash skin thouroughly after handling.

P263 Avoid contact during pregnancy/while nursing.

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

P201 Obtain special instructions before use.

Hazard statements

H362 May cause harm to breast-fed children

H410 Very toxic to aquatic life with long lasting effects

H351 Suspected of causing cancer

H400 Very toxic to aquatic life

SECTION 3: Composition/information on ingredients

Substance

Product name: 13-ethyl-17alpha-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one butyrate
Synonyms: Levonorgestrel butyrate;13-Ethyl-17α-(1-oxobutoxy)-18,19-dinorpregn-4-en-20-yn-3-one
CAS: 86679-33-6
EC number: 2892700
MF: C25H34O3
MW: 382.54

SECTION 4: First aid measures

4.1 Description of necessary first-aid measures

General advice

no data available

If inhaled

Move the victim into fresh air. If breathing is difficult, give oxygen. If not breathing, give artificial respiration and consult a doctor immediately. Do not use mouth to mouth resuscitation if the victim ingested or inhaled the chemical.

Following skin contact

Take off contaminated clothing immediately. Wash off with soap and plenty of water. Consult a doctor.

Following eye contact

Rinse with pure water for at least 15 minutes. Consult a doctor.

Following ingestion

Rinse mouth with water. Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a doctor or Poison Control
Center immediately.

4.2 Most important symptoms/effects, acute and delayed

no data available

4.3 Indication of immediate medical attention and special treatment needed, if necessary

Wear personal protective equipment.

SECTION 5: Firefighting measures

5.1 Extinguishing media

Use dry chemical, carbon dioxide or alcohol-resistant foam.

5.2 Specific hazards arising from the chemical

no data available

5.3 Special protective actions for fire-fighters

Wear self-contained breathing apparatus for firefighting if necessary.

SECTION 6: Accidental release measures

6.1 Personal precautions, protective equipment and emergency procedures

Avoid dust formation. Avoid breathing mist, gas or vapours.Avoid contacting with skin and eye. Use personal protective equipment.Wear chemical impermeable gloves. Ensure adequate ventilation.Remove all sources of ignition. Evacuate personnel to safe areas.Keep people away from and upwind of spill/leak.

6.2 Environmental precautions

Prevent further spillage or leakage if it is safe to do so. Do not let the chemical enter drains. Discharge into the environment must be avoided.

6.3 Methods and materials for containment and cleaning up

Collect and arrange disposal. Keep the chemical in suitable and closed containers for disposal. Remove all sources of ignition. Use spark- proof tools and explosion-proof equipment. Adhered or collected material should be promptly disposed of, in accordance with appropriate laws and regulations.

SECTION 7: Handling and storage

7.1 Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

7.2 Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

SECTION 8: Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

no data available

Biological limit values

no data available

8.2 Appropriate engineering controls

Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the riskelimination area.

8.3 Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Wear tightly fitting safety goggles with side-shields conforming to EN 166(EU) or NIOSH (US).

Skin protection

Wear fire/flame resistant and impervious clothing. Handle with gloves. Gloves must be inspected prior to use. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

If the exposure limits are exceeded, irritation or other symptoms are experienced, use a full-face respirator.

Thermal hazards

no data available

SECTION 9: Physical and chemical properties

Information on basic physicochemical properties

Relative vapour densityno data available
Density and/ or relative density1.31g/cm3
Vapour pressureno data available
N-octanol-water partition coefficientno data available
Solubilityno data available
Kinematic viscosityno data available
pHno data available
Decomposition temperatureno data available
Auto-ignition temperatureno data available
Flash pointno data available
Lower and upper explosion limit/flammability limitno data available
Flammabilityno data available
Boilingpoint or initial boiling point and boiling range491.7±45.0 °C(Predicted)
Melting point/ freezing pointno data available
Odourno data available
Colorno data available
Physical statesolid
Particle characteristicsno data available

SECTION 10: Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Stable under proper conditions

10.3 Possibility of hazardous reactions

no data available

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

no data available