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

MedKoo CAT#: 407282

CAS#: 19973-83-4

Description: OF-1 is a chemical probe for BRPF bromodomains. OF-1 has been shown to bind to BRPF1B with a KD of 100 nM (ITC), to BRPF2 with a KD of 500 nM (ITC) and to BRPF3 with a KD of 2.4 uM (ITC). Selectivity against other bromodomains is very good, in general >100-fold. The closest off-target effects are against BRD4 (39-fold selectivity) and TIF1a (50% inhibition at 20 µM in the alphascreen). OF-1 increases thermal stability in the cellular thermal shift assay (CETSA) of full length BRPF1B at 1 µM and also demonstrates accelerated FRAP recovery at 5 µM in the BRPF2 FRAP assay. It shows modest general cytotoxicity. (http://www.thesgc.org/chemical-probes/OF-1).

Price and Availability

Size Price Shipping out time Quantity
10mg USD 150 2 Weeks
25mg USD 250 2 Weeks
50mg USD 450 2 Weeks
100mg USD 850 2 Weeks
200mg USD 1450 2 Weeks
500mg USD 2150 2 Weeks
1g USD 2950 2 Weeks
2g USD 4650 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2021-01-26. Prices are subject to change without notice.

OF-1, purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 407282
Name: OF-1
CAS#: 19973-83-4
Chemical Formula: C17H18BrN3O4S
Exact Mass: 439.0201
Molecular Weight: 440.312
Elemental Analysis: C, 46.37; H, 4.12; Br, 18.15; N, 9.54; O, 14.53; S, 7.28

Synonym: OF-1; OF1; OF 1.

IUPAC/Chemical Name: 4-bromo-N-(2,3-dihydro-6-methoxy-1,3-dimethyl-2-oxo-1H-benzimidazol-5-yl)-2-methyl-benzenesulfonamide


InChi Code: InChI=1S/C17H18BrN3O4S/c1-10-7-11(18)5-6-16(10)26(23,24)19-12-8-13-14(9-15(12)25-4)21(3)17(22)20(13)2/h5-9,19H,1-4H3

SMILES Code: O=S(C1=CC=C(Br)C=C1C)(NC2=C(OC)C=C(N3C)C(N(C)C3=O)=C2)=O

Technical Data

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: