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08445

Sigma-Aldrich

7-Amino-4-methyl-3-coumarinylacetic acid

BioReagent, suitable for fluorescence, ~90% (HPLC)

Synonym(s):

2H-1-Benzopyran-3-acetic acid, AMCA-H, Aminomethyl coumarin acetic acid

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About This Item

Empirical Formula (Hill Notation):
C12H11NO4
CAS Number:
106562-32-7
Molecular Weight:
233.22
Beilstein/REAXYS Number:
7927205
MDL number:
MFCD00081051
UNSPSC Code:
12352106
PubChem Substance ID:
329748585
NACRES:
NA.32

product line

BioReagent

assay

~90% (HPLC)

form

powder

solubility

DMF: soluble
DMSO: soluble
aqueous base: soluble

fluorescence

λex 350 nm; λem 433 nm in methanol

suitability

suitable for fluorescence

SMILES string

CC1=C(CC(O)=O)C(=O)Oc2cc(N)ccc12

InChI

1S/C12H11NO4/c1-6-8-3-2-7(13)4-10(8)17-12(16)9(6)5-11(14)15/h2-4H,5,13H2,1H3,(H,14,15)

InChI key

QEQDLKUMPUDNPG-UHFFFAOYSA-N

Application

AMCA is a useful agent for labeling proteins. Demonstrates a characteristic absorption peak at 345 nm with a fluorescence emission at 440-460 nm (blue region); however, when conjugated with proteins the absorption peak shifts to 355 nm with a fluorescence emission at 440-460 nm. It has a high fluorescence yield with a sufficient Stokes shift (100 nm) and is relatively photostable . Relatively easy to activate and couple to the N-terminal amino group of a peptide resulting in an acid stable amide bond .

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

Useful blue fluorophore for immunofluorescence, λabs ~350 nm, λem ~440 nm

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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P M Nederlof et al.
Cytometry, 10(1), 20-27 (1989-01-01)
A method is described for visualizing three nucleic acid sequences simultaneously by in situ hybridization using a new blue immunofluorescent label, amino methyl coumarin acetic acid (AMCA), in combination with green and red fluorescing FITC and TRITC. Three chromosome-specific repetitive
H Khalfan et al.
The Histochemical journal, 18(9), 497-499 (1986-09-01)
A new fluorescent protein labelling agent, 7-amino-4-methyl coumarin-3-acetic acid (AMCA), emits in the blue region (440-460 nm) on activation with UV light (350 nm). The active reagent is the N-hydroxysuccinimide ester which reacts with lysine residues under mild conditions to
S Callaci et al.
Molecular cell, 3(2), 229-238 (1999-03-17)
Luminescence resonance energy transfer measurements were used to show that binding of E. coli core RNA polymerase induced major changes in interdomain distances in the sigma 70 subunit. The simplest model describing core-induced changes in sigma 70 involves a movement
V A Botchkarev et al.
Archives of dermatological research, 289(5), 292-302 (1997-04-01)
Close contacts between mast cells (MC) and nerve fibers have previously been demonstrated in normal and inflamed skin by light and electron microscopy. A key step for any study in MC-nerve interactions in situ is to simultaneously visualize both communication
P A Muraro et al.
The Journal of clinical investigation, 100(2), 339-349 (1997-07-15)
The pathogenesis of multiple sclerosis (MS) is currently ascribed in part to a T cell-mediated process targeting myelin components. The T cell response to one candidate autoantigen, myelin basic protein (MBP), in the context of HLA-DR15Dw2, has been previously studied
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