N-(4-AMINOBUTYL)-5-CHLORO-2-NAPHTHALENESULFONAMIDE HYDROCHLORIDE

Synonym(s):N-(4-Aminobutyl)-5-chloro-2-naphthalenesulfonamide hydrochloride;N-(4-Aminobutyl)-5-chloro-2-naphthalenesulfonamide, HCl;W13;W-13, Hydrochloride - CAS 88519-57-7 - Calbiochem

CAS NO.：88519-57-7
Empirical Formula: C14H18Cl2N2O2S
Molecular Weight: 349.28
MDL number: MFCD00058030
SAFETY DATA SHEET (SDS)
Update Date: 2026-07-27 17:00:41

N-(4-AMINOBUTYL)-5-CHLORO-2-NAPHTHALENESULFONAMIDE HYDROCHLORIDE Structural

What is N-(4-AMINOBUTYL)-5-CHLORO-2-NAPHTHALENESULFONAMIDE HYDROCHLORIDE?

Description

W-13 is a naphthalenesulfonamide derivative that acts as a potent antagonist of calmodulin (IC₅₀ = 22 μM) and is widely used to investigate Ca²⁺/calmodulin-regulated enzyme activities.

Chemical properties

Beige Solid

The Uses of N-(4-AMINOBUTYL)-5-CHLORO-2-NAPHTHALENESULFONAMIDE HYDROCHLORIDE

Calmodulin antagonist that binds to calmodulin and inhibits calcium-ion-calmodulin- regulated activities, including phosphodiesterase activation and myosin light chain kinase127, it is widely used to investigate Ca2+/calmodulin-regulated enzyme activities.

The Uses of N-(4-AMINOBUTYL)-5-CHLORO-2-NAPHTHALENESULFONAMIDE HYDROCHLORIDE

W-13 is a naphthalenesulfonamide derivative that acts as a potent antagonist of calmodulin (IC50 = 22 μM) and is widely used to investigate Ca2+/calmodulin-regulated enzyme activities.

What are the applications of Application

W-13 Isomer hydrochloride is an isomer of W-13 that inhibits CaM activity

Definition

ChEBI: N-(4-aminobutyl)-5-chloronaphthalene-2-sulfonamide hydrochloride is a hydrochloride salt prepared from equimolar amounts of N-(4-aminobutyl)-5-chloronaphthalene-2-sulfonamide and hydrogen chloride. It contains a N-(4-aminobutyl)-5-chloronaphthalene-2-sulfonamide(1+).

Biological Activity

Calmodulin antagonist (inhibits calmodulin activated PDE activity with an IC 50 of 68 μ M). Inhibits growth of tamoxifen-resistant breast cancer cells.

Biochem/physiol Actions

W-13 has also been shown to inhibit the transcytosis of IgA, recycling of transferrin and overall alter the endocytic pathway in Madin-Darby canine kidney cells.

Storage

Store at RT

Properties of N-(4-AMINOBUTYL)-5-CHLORO-2-NAPHTHALENESULFONAMIDE HYDROCHLORIDE

Melting point:	241-243°C
storage temp.	room temp
solubility	H₂O: Stock solutions of 5 mM are recommended. These stocks should be stable for up to 6 months when stored at 4°C.soluble
form	powder
color	white
CAS DataBase Reference	88519-57-7(CAS DataBase Reference)

Safety information for N-(4-AMINOBUTYL)-5-CHLORO-2-NAPHTHALENESULFONAMIDE HYDROCHLORIDE

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.