| Product Name | Cystatin from chicken egg white, lyophilized powder |
| Product Number | C8917 |
| Product Brand | SIGMA |
| CAS Number | 81989-95-9 |
| TEST | SPECIFICATION |
| APPEARANCE | WHITE POWDER |
| PROTEIN BY UV ABSORBANCE | MINIMUM 90% (BASED ON E1% AT 280NM = 8.7) |
| ENZYMATIC ACTIVITY | ONE MG PROTEIN WILL INHIBIT 50% OF THE ACTIVITY OF A MINIMUM OF 40BAEE UNITS OF PAPAIN, P4762, AT PH6.8 AT 40DEGC |
| UNIT DEFINITION | ONE BAEE UNIT OF PAPAIN WILL HYDROLYZE 1.0MICROMOLE OF N-ALPHA-BENZOYL-L-ARGININE ETHYL ESTER PER MINUTE AT PH6.2 AT 25DEGC |
| DOCUMENT # C8917/07/03/02/5 | |
