WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 205800

CAS#: 910462-43-0

Description: Domatinostat, also known as 4SC-202, is an orally bioavailable benzamide and inhibitor of human class I histone deacetylases (HDACs) isoenzymes 1, 2 and 3, with potential antineoplastic activity. HDAC inhibitor 4SC-202 selectively binds to and inhibits class I HDACs leading to an accumulation of highly acetylated histones. This may result in an induction of chromatin remodeling, the selective transcription of tumor suppressor genes, and the tumor suppressor protein-mediated inhibition of tumor cell division and eventually the induction of tumor cell apoptosis. This may inhibit tumor cell proliferation in susceptible tumor cells. HDACs, upregulated in many tumor types, are a class of enzymes that deacetylate chromatin histone proteins.

Chemical Structure

CAS# 910462-43-0

Theoretical Analysis

MedKoo Cat#: 205800
Name: 4SC-202
CAS#: 910462-43-0
Chemical Formula: C23H21N5O3S
Exact Mass: 447.13651
Molecular Weight: 447.51
Elemental Analysis: C, 61.73; H, 4.73; N, 15.65; O, 10.73; S, 7.17

Size Price Shipping out time Quantity
10mg USD 190 Same Day
50mg USD 450 Same Day
100mg USD 850 Same Day
500mg USD 1950 Same Day
1g USD 2950 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2021-03-09. Prices are subject to change without notice.

4SC-202, purity > 98%, is in stock. The same day shipping out after order is received.

Synonym: 4SC202; 4SC-202; 4SC 202; domatinostat;

IUPAC/Chemical Name: (E)-N-(2-aminophenyl)-3-(1-((4-(1-methyl-1H-pyrazol-4-yl)phenyl)sulfonyl)-1H-pyrrol-3-yl)acrylamide.


InChi Code: InChI=1S/C23H21N5O3S.C7H8O3S/c1-27-16-19(14-25-27)18-7-9-20(10-8-18)32(30,31)28-13-12-17(15-28)6-11-23(29)26-22-5-3-2-4-21(22)24;1-6-2-4-7(5-3-6)11(8,9)10/h2-16H,24H2,1H3,(H,26,29);2-5H,1H3,(H,8,9,10)/b11-6+;

SMILES Code: O=C(NC1=CC=CC=C1N)/C=C/C2=CN(S(=O)(C3=CC=C(C4=CN(C)N=C4)C=C3)=O)C=C2.O=S(C5=CC=C(C)C=C5)(O)=O

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO, not in water

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:

Preparing Stock Solutions

The following data is based on the product molecular weight 447.51 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

Additional Information

4SC-202 is an orally administered selective class I HDAC inhibitor. 4SC-202 demonstrates a particularly strong anti-mitotic activity. 4SC-202 enables a dual attack on malignant cancer cells and is therefore not a back-up compound for resminostat. Its strong, specific anti-mitotic effect could make this candidate particularly suitable for the treatment of cancer types that exhibit high rates of cell division. 4SC-202, currently being developed by A German Company called 4SC,  is in the Phase I TOPAS study in order to evaluate the safety, pharmacokinetics and clinical efficacy of the orally administered compound in patients with advanced hematological indications, including acute myeloid leukemia (AML), acute lymphocytic leukemia (ALL), chronic lymphocytic leukemia (CLL), multiple myeloma (MM), myelodysplastic syndrome (MDS) and lymphomas (source: http://www.4sc.de/product-pipeline/clinical/4SC-202).