Product Name: DM 1;N2’-Deacetyl-N2’-(3-mercapto-1-oxopropyl)maytansine  
CAS No.: 139504-50-0  
Synonyms: Maytansinoid DM 1  
Molecular Formula: C35H48ClN3O10S  
Molecular Weight: 738.29  

Appearance: White to light yellow solid
Assay: >95%