Material Safety Data Sheet

Biogen, Inc. Emergency Phone Number: 14 Cambridge Center 1(800) 262-4363 Cambridge, MA 02142 Biogen Environmental Health and Safety: (617) 679-2000 1 (617) 679-2236

Section 1. Identification

Product Name: BG9713 Chemical Name: Osteogenic Protein-1 (OP-1) CAS Number: None Substance: Recombinant Human Osteogenic Protein-1 produced in culture by Chinese Hamster Ovary (CHO) cells Other Names or Code Numbers: Osteogenic Protein-1, OP-1; Bone Morphogenetic Protein-7, BMP-7

Section 2. Composition / Information on Ingredients

Components % OSHA PEL ACGIH TLV OTHER STANDARDS Optional OP-1 none none none known The bulk intermediate product is a lyophilized powder. The finished product is a frozen aqueous solution in 20 millimolar Sodium acetate buffer. No other hazardous components are present in concentrations greater than 1%.

Section 3. Hazards Identification

General Statement: BG9713 (OP-1) is a member of the tissue growth factor (TGF-ß) family that is involved in bone formation and in development of the kidney. Carcinogen Status:OSHA: No NTP: No IARC: No Carcinogen Statement: No data available. Mutagenic Effects: No data available Teratogenic Effects: No data available Reproductive Effects: In vitro, OP-1 reduced production of pregnancy maintaining hormones secreted by cultured human trophoblasts. Neurotoxic Effects: In a rat model, OP-1 protected nerve cells from the effects of reduced oxygen and blood flow to the brain.

Section 4. First Aid Measures

If Inhaled: Remove to fresh air. Get medical attention. If breathing has stopped, give artificial respiration. Treat symptomatically and supportively. If Swallowed: Wash mouth out with water and seek medical attention. In Case of Skin or Eye Contact: No data available. Flush at least 15 minutes with water. Wash exposed skin with soap and water. Contact physician if irritation persists. Skin Absorption: No data available. If Injected: No data available. Medical Conditions Aggravated by Exposure: No data available. Notes to Physician: The biological activity of OP-1 relates to developing tissues. It has been shown to regulate growth and differentiation of a variety of cell types, including bone cells, cartilage, neural, and epithelial cells.

Section 5. Fire Fighting Measures

Flash Point: No data available Flammable Limits: No data available Extinguishing Media: Use water spray, CO2, ABC dry chemical, or Foam. Special Fire Fighting Materials: No special procedures or materials. Unusual Fire and Explosion Hazards: No data available.

Section 6. Accidental Release Measures

No data available. OP-1 is not a hazardous material as defined by US EPA or OSHA.

Section 7. Handling and Storage

Lyophilized product can be stored at 2-8°C. No special safety precautions required.

Section 8. Exposure Control / Personal Protection

CAUTION: The chemical, physical, and toxicological properties of OP-1 have not been thoroughly investigated. Its biological activity relates to regulation of growth and differentiation of a variety of cell types including bone cells, cartilage, neural, and epithelial cells. Exercise care to minimize contact or exposure. Perform work in a chemical fume hood, Type IIB biological safety cabinet, or other well ventilated area wherever possible. For work performed without mechanical ventilation, follow procedures which minimize the potential for direct skin or mucous membrane contact, or the potential for exposure by inhalation or ingestion. Use personal protective equipment such as lab coat, gloves, safety glasses or goggles. Wash hands immediately upon removing gloves. Respiratory protection should not be needed, however, if it is worn, be sure the device is NIOSH approved, and individually fit tested.

Section 9. Physical and Chemical Properties

Molecular Formula: OP-1 is a 431 amino acid glycoprotein. Molecular Weight: 49313 (predicted) Appearance/Odor: Bulk intermediate product:white, lyophilized powder/odorless Finished product: frozen aqueous solution Solubilities: 20 millimolar Sodium acetate buffer Boiling Point: Decomposes at temperatures > 40 °C Melting Point: No data available. Vapor Pressure: n/a Vapor Density: n/a Specific Gravity: n/a pH: 4.5 (0.5 mg/mL in sodium acetate buffer)

Section 10. Stability and Reactivity

OP-1 is Stable Hazardous Polymerization: Will not occur Incompatible Materials: No data available. Conditions to Avoid: No data available. Hazard Decomposition Products: No data available.

Section 11. Toxicology Information

CAUTION: The chemical, physical, and toxicological properties of OP-1 have not been thoroughly investigated. Exercise care to prevent exposure or contact. A single dose acute toxicity study was conducted in rats. Doses up to 2.5 mg/kg were administered once on Day 1 and animals were observed for a total of 14 days. No acute toxicity or injection site histopathology was observed. A 28 day repeat dose intravenous toxicity study in rats was conducted. Doses were administered once daily for 28 consecutive days at dose levels up to 2.5 mg/kg. No systemic toxicity was observed; slight changes in body weight, food consumption, red blood cell parameters, platelet and neutrophil counts and serum globulin were observed at 2.5 mg/kg. Localized injection site (tail vein) gross pathology revealed a dose-dependent formation of cartilaginous and ossified tissue in white concentric rings at the 2.5 mg/kg dose level.

Section 12. Ecological Information

No data available. OP-1 is not a regulated hazardous material.

Section 13. Disposal Considerations

OP-1 is not a regulated hazardous material. Dispose in accordance with state and local regulatory requirements.

Section 14. Transport Information

DOT Proper Shipping Name: n/a ID #: n/a

Section 15. Regulatory Information

No data available.

Section 16. Other Information

MSDS Created: 1-Jul-97 Revised: Prepared By: Susan Lee, CIH Manager Environmental Health and Safety DISCLAIMER: The above mentioned data are based on Biogen's best present knowledge of this product. Biogen cannot guarantee completeness or accuracy of the information contained herein, and disclaims all liability for incompleteness or inaccuracy of the information and for any claims of damages arising from handling or use of this product.