Skip to Content

Dear Customer:

The current international situation is complex and volatile, and uncertain tariff policies may potentially impact our product prices. Given these uncertainties, we value your understanding regarding order-related matters.

If you decide to place an order during this period, we reserve the right to adjust the price based on the evolving situation. We understand that market changes may cause inconvenience. We will negotiate with you if there’s a significant price fluctuation due to tariff policy changes before the order’s actual delivery, and in such cases we may adjust or cancel the order as necessary.

We are planning system maintenance between Friday, Apr 11 at 9:00 PM CDT and Saturday, Apr 12 at 9:00 AM CDT. This will impact both web and offline transactions, including online orders, quotes, price and availability checks, and order status inquiries. We apologize for any inconvenience.

Merck
CN
Compare (4)
Sign Into View Organizational & Contract Pricing
7-Amino-4-methylcoumarin Chromophore for substrates
Sigma-Aldrich
A9891
7-Amino-4-methylcoumarin
Ala-Ala-Phe-7-amido-4-methylcoumarin protease substrate
Sigma-Aldrich
A3401
Ala-Ala-Phe-7-amido-4-methylcoumarin
7-Amino-4-methylcoumarin 99%
Sigma-Aldrich
257370
7-Amino-4-methylcoumarin
4-Methylumbelliferyl β-D-N,N′,N′′-triacetylchitotrioside fluorogenic glycanase substrate
Sigma-Aldrich
M5639
4-Methylumbelliferyl β-D-N,N′,N′′-triacetylchitotrioside
Chromophore for substrates
protease substrate
99%
fluorogenic glycanase substrate

Description

Synonyms
Coumarin 120
H-Ala-Ala-Phe-AMC
Coumarin 120
4-Methyl-7-coumarinyl-tri-N-acetyl-β-chitotrioside, 4-Methylumbelliferyl-N,N′,N″-triacetyl-β-chitotrioside
CAS Number
Molecular Formula
Empirical Formula (Hill Notation)
: C10H9NO2
Empirical Formula (Hill Notation)
: C25H28N4O5
Empirical Formula (Hill Notation)
: C10H9NO2
Empirical Formula (Hill Notation)
: C34H47N3O18
Molecular Weight
: 175.18
Molecular Weight
: 464.51
Molecular Weight
: 175.18
Molecular Weight
: 785.75
MDL Number
MFCD00006868
MFCD00070149
MFCD00006868
MFCD00036892
Quality Designations
300

Properties

λ<SUB>max</SUB>:
λ<SUB>max</SUB>:
λ<SUB>max</SUB>:
354 nm in ethanol
λ<SUB>max</SUB>:
Assay:
≥98% (HPLC)
Assay:
≥98% (TLC)
Assay:
99%
Assay:
≥98.00% (TLC)
fluorescence:
λex 365 nm; λem 440 nm in ethanol(lit.)
fluorescence:
fluorescence:
fluorescence:
description:
chromophore for enzyme substrates
description:
description:
chromophore for enzyme substrates
description:
InChI:
1S/C10H9NO2/c1-6-4-10(12)13-9-5-7(11)2-3-8(6)9/h2-5H,11H2,1H3
InChI:
1S/C25H28N4O5/c1-14-11-22(30)34-21-13-18(9-10-19(14)21)28-25(33)20(12-17-7-5-4-6-8-17)29-24(32)16(3)27-23(31)15(2)26/h4-11,13,15-16,20H,12,26H2,1-3H3,(H,27,31)(H,28,33)(H,29,32)
InChI:
1S/C10H9NO2/c1-6-4-10(12)13-9-5-7(11)2-3-8(6)9/h2-5H,11H2,1H3
InChI:
1S/C34H47N3O18/c1-12-7-22(44)50-18-8-16(5-6-17(12)18)49-32-24(36-14(3)42)28(47)30(20(10-39)52-32)55-34-25(37-15(4)43)29(48)31(21(11-40)53-34)54-33-23(35-13(2)41)27(46)26(45)19(9-38)51-33/h5-8,19-21,23-34,38-40,45-48H,9-11H2,1-4H3,(H,35,41)(H,36,42)(H,37,43)/t19-,20-,21-,23-,24-,25-,26-,27-,28-,29-,30-,31-,32-,33+,34+/m1/s1
InChI key:
GLNDAGDHSLMOKX-UHFFFAOYSA-N
InChI key:
FVRLYIFIDKXFHU-UHFFFAOYSA-N
InChI key:
GLNDAGDHSLMOKX-UHFFFAOYSA-N
InChI key:
BNYGKUQXGBVTRE-JFWBNMEYSA-N
mp:
223-226 °C (lit.)
mp:
mp:
223-226 °C (lit.)
mp:
form:
powder
form:
powder
form:
solid
form:
powder
SMILES string:
CC1=CC(=O)Oc2cc(N)ccc12
SMILES string:
CC(N)C(=O)NC(C)C(=O)NC(Cc1ccccc1)C(=O)Nc2ccc3C(C)=CC(=O)Oc3c2
SMILES string:
CC1=CC(=O)Oc2cc(N)ccc12
SMILES string:
CC(=O)N[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@H]2[C@H](O)[C@@H](NC(C)=O)[C@@H](O[C@@H]2CO)O[C@H]3[C@H](O)[C@@H](NC(C)=O)[C@@H](O[C@@H]3CO)Oc4ccc5C(C)=CC(=O)Oc5c4
solubility:
acetone: 10 mg/mL, clear, colorless to yellow
solubility:
ethanol: 20 mg/mL, clear, colorless to light yellow
solubility:
solubility:
water: pyridine, 1:1: 4.90-5.10 mg/mL, clear, colorless to light yellow
storage temp.:
2-8°C
storage temp.:
2-8°C
storage temp.:
2-8°C
storage temp.:
2-8°C
Quality Level:
Quality Level:
Quality Level:
Quality Level:
300

Usage and Safety

Application
7-Amino-4-methylcoumarin has been used:
  • to determine cathepsin B like- activity
  • as a substrate for leucine aminopeptidase (LAP)
  • in chymotryptic assay
  • as a standard to detect the activation of caspase-3 during
  • sanguinarine-induced damage
  • protection by human DEAD-box DDX3

Used as matrix for analysis of monosulfated disaccharides and as a co-matrix with 6-aza-2-thiothymidine for sulfated neutral and sialylated tri-and tetrasaccharides.
Ala-Ala-Phe-7-amido-4-methylcoumarin has been used:
  • in the preparation of the reaction mixture for enzymatic assays
  • to initiate the enzyme reaction in tripeptidyl peptidase-1 (TPP1) enzyme activity assay
  • to initiate the assay reaction in lysosomal hydrolases activity assay

Coumarin 120 is used as a fluorescent labeling reagent for trace determination of enzymes. It may be used as an antibacterial agent against MDR isolates of M. tuberculosis as it impacts the cell morphology. Coumarin 120 may also be used as an electron donor (amino groups) to transfer charge in a fluorescent sensor for the detection of mercury ions in aqueous media.
4-Methylumbelliferyl β-D-N,N′,N′′-triacetylchitotrioside has been used as a fluorogenic substrate to determine chitinase and chitotriosidase enzyme activity.
Risk and Safety
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

Storage Class Code:

11 - Combustible Solids

WGK:

WGK 3

Flash Point(F):

Not applicable

Flash Point(C):

Not applicable

Personal Protective Equipment:

Eyeshields, Gloves, type N95 (US)

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

Storage Class Code:

11 - Combustible Solids

WGK:

WGK 3

Flash Point(F):

Not applicable

Flash Point(C):

Not applicable

Personal Protective Equipment:

Eyeshields, Gloves, type N95 (US)