• #LGM Pharma is a DM-4 CAS# 799840-96-3 API supplier distributor based in the USA. Inquire about DMF, cGMP, price, availability, delivery, purity, and more.
  • #Questions? Call our customer API support number 1-(800)-881-8210.
  • #LGM Pharma offers this active ingredient but not the finished dosage forms.

Product Details:

  • CAS No: 799840-96-3
  • AHFC code:
  • Synonyms: DM 4, DM-4, DM4, N2'-Deacetyl-N2'-(4-mercapto-4-methyl-1-oxopentyl)-maytansine
  • ATC Code:
  • Chemical Formula:
  • Molecular Weight: 780.3746
  • Assay/Purity: Typically NLT 98%
  • DrugBank:
  • SMILES: C[C,,H]1[C,,H]2C[C,]([C,,H](/C=CC=C(Cc3cc(c(c(c3)OC)Cl)N(C(=O)C[C,H]([C,]4([C,,H]1O4)C)OC(=O)[C,H](C)N(C)C(=O)CCC(C)(C)S)C)/C)OC)(NC(=O)O2)O
  • InChl:
  • PubChem:
  • IUPAC:

Additional Details

Mode of Action:
General Reference:
Products currently covered by valid US Patents are offered for R&D use in accordance with 35 USC 271(e)+A13(1). Any patent infringement and resulting liability is solely at buyer risk.

API’s From Quality Manufacturers:

  • Cost effective materials based on specific requirements
  • Small quantities for initial research and larger development quantities towards product commercialization


  • Technical packages, letters of access to filed DMFs
  • Complete assistance in any regulatory filings
  • Top quality GMP certified manufacturers
  • Have necessary regulatory credentials


Related YouTube Videos