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A0554

Sigma-Aldrich

4-Acetamido-4′-isothiocyanato-2,2′-stilbenedisulfonic acid disodium salt hydrate

powder, ≥80%

Synonym(s):

Disodium 4-acetamido-4′-isothiocyanato-stilben-2,2′-disulfonate, SITS

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About This Item

Empirical Formula (Hill Notation):
C17H12N2Na2O7S3 · xH2O
CAS Number:
51023-76-8
Molecular Weight:
498.46 (anhydrous basis)
Beilstein:
9177451
EC Number:
256-919-4
MDL number:
MFCD00007485
UNSPSC Code:
12352202
PubChem Substance ID:
24890434
NACRES:
NA.77

product name

4-Acetamido-4′-isothiocyanato-2,2′-stilbenedisulfonic acid disodium salt hydrate, ≥80%

Quality Level

100

Assay

≥80%

form

powder

storage temp.

−20°C

SMILES string

[Na+].[Na+].CC(=O)Nc1ccc(\C=C\c2ccc(cc2S([O-])(=O)=O)N=C=S)c(c1)S([O-])(=O)=O

InChI

1S/C17H14N2O7S3.2Na/c1-11(20)19-15-7-5-13(17(9-15)29(24,25)26)3-2-12-4-6-14(18-10-27)8-16(12)28(21,22)23;;/h2-9H,1H3,(H,19,20)(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b3-2+;;

InChI key

NPAWAMRXPHRVQY-WTVBWJGASA-L

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Application

Fluorescent marker for membranes; inhibits anion permeability of membranes. Also inactivates Na,K-ATPase, by covalent modification of a specific Lys residue.

Other Notes

Predominantly trans-isomer

Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Danger

Hazard Statements

H302,H315,H319,H334,H335

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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C H Pedemonte et al.
FEBS letters, 314(1), 97-100 (1992-12-07)
The sodium pump or Na,K-ATPase, maintains the Na+ and K+ gradients across eukaryotic cell membranes at the expense of ATP. Incubation of purified canine renal Na,K-ATPase with 4-acetamido-4'-isothiocyanatostilbene-2,2'-disulfonic acid (SITS) inhibited the ATPase activity. Both the labeling of the protein
M Montana Quick et al.
Journal of the American Society for Mass Spectrometry, 28(7), 1462-1472 (2017-03-21)
N-terminal derivatization of peptides with the chromogenic reagent 4-acetamido-4-isothiocyanatostilbene-2,2-disulfonic acid (SITS) is demonstrated to enhance the efficiency of 266 nm ultraviolet photodissociation (UVPD). Attachment of the chromophore results in a mass shift of 454 Da and provides significant gains in the number
Dennis Kolosov et al.
Insect biochemistry and molecular biology, 116, 103263-103263 (2019-11-05)
Malpighian tubules (MTs) and the hindgut together constitute the excretory system of insects. Larvae of lepidopterans (butterflies and moths) demonstrate the so-called cryptonephric arrangement, where the distal blind end of each MT is embedded into the rectal complex. The rest
Carmen Vale et al.
Toxicological sciences : an official journal of the Society of Toxicology, 113(1), 158-168 (2009-10-10)
Azaspiracids (AZAs) are a group of marine toxins recently described that currently includes 20 members. Not much is known about their mechanism of action, although the predominant analog in nature, AZA-1 targets several organs in vivo, including the central nervous
Xuan Zhang et al.
Molecular pharmacology, 81(5), 689-700 (2012-02-14)
Transient receptor potential vanilloid type 1 (TRPV1) is a nonselective cation channel activated by capsaicin, low pH, and noxious heat and plays a key role in nociception. Understanding mechanisms for functional modulation of TRPV1 has important implications. One characteristic of
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