CAS No:4759-48-2
Shelf life:2 years
Storage conditions:Preserve in tight containers,preferably under an atmosphere of an inert gas,protected form light.
The detailed specifications are as below:
| Items | Standard |
| Description | Yellow or orange crystalline powder |
| Identification | The IR absorption spectrum should correspond with reference spectrum Should exhibits maximum absorption at 354nm |
| Loss on drying | Not more than 0.5% |
| Residue on ignition | Not more than 0.1% |
| Heavy metals | Not more than 0.002% |
| Limit of tretinoin | Not more than 1.0% |
| Assay | 98.0%~102.0%(Calculated on the dried basis) |