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

MedKoo CAT#: 406243

CAS#: 86030-08-2

Description: BTB-1 is a novel small molecule inhibitor of the mitotic motor protein Kif18A, which was identified by Catarinella et al. during a highthroughput screen against Kif18A’s MT-stimulated ATPase activity, with an IC50 of 1.7–1.9 M . It is selective within the kinesin subgroup of Kif4, Eg5, MKLP-1, MKLP-2, MPP1, CENP-E and MCAK, and during in vitro motility assays Kif18A’s MT gliding ability was blocked by the addition of BTB-1 in a reversible manner. BTB-1 was found to be ATP competitive and MT uncompetitive, only inhibiting the ATPase activity of the MT-bound motor protein. BTB-1 could serve as a valuable tool in disentangling the nature of Kif18A’s double functionality within mitosis and assessing for potential therapeutic utilities.

Chemical Structure

CAS# 86030-08-2

Theoretical Analysis

MedKoo Cat#: 406243
Name: BTB-1
CAS#: 86030-08-2
Chemical Formula: C12H8ClNO4S
Exact Mass: 296.98626
Molecular Weight: 297.71
Elemental Analysis: C, 48.41; H, 2.71; Cl, 11.91; N, 4.70; O, 21.50; S, 10.77

Price and Availability

Size Price Availability Quantity
250.0mg USD 215.0 2 Weeks
500.0mg USD 375.0 2 Weeks
1.0g USD 565.0 2 Weeks
Bulk inquiry

Synonym: BTB1; BTB 1 ; BTB-1.

IUPAC/Chemical Name: 4-chloro-2-nitro-1-(phenylsulfonyl)benzene


InChi Code: InChI=1S/C12H8ClNO4S/c13-9-6-7-12(11(8-9)14(15)16)19(17,18)10-4-2-1-3-5-10/h1-8H

SMILES Code: O=S(C1=CC=C(Cl)C=C1[N+]([O-])=O)(C2=CC=CC=C2)=O

Appearance: Solid powder

Purity: >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).

Solubility: Soluble in DMSO, not in water

Shelf Life: >5 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: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 297.71 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.

Recalculate based on batch purity %
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.

1: Catarinella M, Grüner T, Strittmatter T, Marx A, Mayer TU. BTB-1: a small molecule inhibitor of the mitotic motor protein Kif18A. Angew Chem Int Ed Engl. 2009;48(48):9072-6. doi: 10.1002/anie.200904510. PubMed PMID: 19856362.


250.0mg / USD 215.0

Additional Information