74040
2-Nitro-5-thiocyanatobenzoic acid
≥97.0% (T)
Synonym(s):
2-Nitro-5-thiocyanobenzoic acid, NTCB
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About This Item
Linear Formula:
O2NC6H3(SCN)CO2H
CAS Number:
Molecular Weight:
224.19
EC Number:
250-093-9
UNSPSC Code:
12352200
PubChem Substance ID:
Beilstein/REAXYS Number:
2124001
MDL number:
assay
≥97.0% (T)
mp
156-157 °C (lit.), 159-163 °C
SMILES string
OC(=O)c1cc(SC#N)ccc1[N+]([O-])=O
InChI
1S/C8H4N2O4S/c9-4-15-5-1-2-7(10(13)14)6(3-5)8(11)12/h1-3H,(H,11,12)
InChI key
NQUNIMFHIWQQGJ-UHFFFAOYSA-N
Other Notes
Reagent for the selective cyanylation of sulfhydryl groups ; Modifies and cleaves peptides at cysteine residues
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
Regulatory Information
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S Otieno
Biochemistry, 17(25), 5468-5474 (1978-12-12)
The selective reaction of SH containing proteins and peptides with NTCB (2-nitro-5-thiocyanobenzoic acid) has been reported (Degani, Y., & Patchornick, A. (1974) Biochemistry 13, 1; Jacobson, G.A., Schaffer, M.H., Stark, G.R., & Vanaman, T.C. (1973) J. Biol. Chem. 248, 6583).
R Daniel et al.
The Journal of biological chemistry, 272(43), 26934-26939 (1997-10-27)
Escherichia coli dihydroorotase contains six cysteines/subunit, which are potential ligands of structural and catalytic zinc metals at protein sites of the enzyme. Specific thiol reagents modify, in nondenaturing conditions only, two of these cysteines; these two residues are thought to
Maya Belghazi et al.
Molecular and cellular endocrinology, 247(1-2), 175-182 (2006-02-07)
Luteinizing hormone (LH) like all other glycoprotein hormones is composed of two dissimilar subunits, alpha and beta, that are non-covalently associated. The heterodimer is stabilized by a region of the beta-subunit called the "seatbelt" because it wraps around the alpha-subunit
N Tanaka et al.
Biochemistry, 40(20), 5914-5920 (2001-05-16)
We investigated the pressure effect on the conformation of beta-amylase by monitoring the chemical reaction of the unpaired cysteine. Sweet potato beta-amylase is composed of four identical subunits, each of which contains six cysteine residues. These residues are inert to
J Bubis et al.
Archives of biochemistry and biophysics, 395(2), 146-157 (2001-11-08)
Modification of transducin (T) with iodoacetic acid (IAA) inhibited its light-dependent guanine nucleotide-binding activity. Approximately 1 mol of [(3)H]IAA was incorporated per mole of T. Cys(347), located on the alpha-subunit of T (T(alpha)), was identified as the major labeled residue
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