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Thiolutin

Alias: Thiolutin; Acetopyrrothin; NSC 3927; NSC-3927; NSC3927
Cat No.:V11037 Purity: ≥98%
Thiolutin (formerly Acetopyrrothin and NSC-3927), is a potent and naturally occusinrg disulfide-containing antibiotic and anti-angiogenic agent isolated from Streptomyces, it acts as a zinc chelator that inhibits the Rpn11 and other JAMM metalloproteases, also inhibits the JAMM metalloproteases Csn5, Associated-molecule-with-the-SH3-Domain-of-STAM (AMSH) and Brcc36.
Thiolutin
Thiolutin Chemical Structure CAS No.: 87-11-6
Product category: Bacterial
This product is for research use only, not for human use. We do not sell to patients.
Size Price
5mg
Other Sizes
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Thiolutin (formerly Acetopyrrothin and NSC-3927), is a potent and naturally occusinrg disulfide-containing antibiotic and anti-angiogenic agent isolated from Streptomyces, it acts as a zinc chelator that inhibits the Rpn11 and other JAMM metalloproteases, also inhibits the JAMM metalloproteases Csn5, Associated-molecule-with-the-SH3-Domain-of-STAM (AMSH) and Brcc36. Thiolutin is a potent and selective inhibitor of endothelial cell adhesion accompanied by rapid induction of Heat-shock protein beta-1 (Hsp27) phosphorylation.

Biological Activity I Assay Protocols (From Reference)
References

[1]. Thiolutin is a zinc chelator that inhibits the Rpn11 and other JAMM metalloproteases. Nat Chem Biol. 2017 Jul;13(7):709-714.

[2]. Thiolutin inhibits endothelial cell adhesion by perturbing Hsp27 interactions with components of the actin and intermediate filament cytoskeleton. Cell Stress Chaperones. 2010 Mar;15(2):165-81.

Additional Infomation
Thiolutin is a dithiolopyrrolone antibiotic that is 4,5-dihydro[1,2]dithiolo[4,3-b]pyrrole in which the hydrogens at positions 4,5 and 6 have been replaced by methyl, oxo and acetamido groups, respectively. It is a potent inhibitor of RNA polymerases, inhibits the angiogenesis of human umbilical vein endothelial cells, and also inhibits JAMM metalloproteases. It has a role as an angiogenesis inhibitor, a chelator, a protein synthesis inhibitor, an EC 2.7.7.6 (RNA polymerase) inhibitor, an antibacterial agent, a toxin, a marine metabolite, a bacterial metabolite, an antifungal agent and an antineoplastic agent. It is a dithiolopyrrolone antibiotic and a member of acetamides. It is functionally related to a holomycin.
Thiolutin has been reported in Streptomyces celluloflavus, Saccharothrix algeriensis, and Streptomyces kasugaensis with data available.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C8H8N2O2S2
Molecular Weight
228.29132
Exact Mass
228.002
Elemental Analysis
C, 42.09; H, 3.53; N, 12.27; O, 14.02; S, 28.09
CAS #
87-11-6
PubChem CID
6870
Appearance
Light yellow to yellow solid powder
Density
1.6±0.1 g/cm3
Boiling Point
478.6±45.0 °C at 760 mmHg
Melting Point
273-276℃
Flash Point
243.3±28.7 °C
Vapour Pressure
0.0±1.2 mmHg at 25°C
Index of Refraction
1.721
LogP
0.99
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
4
Rotatable Bond Count
1
Heavy Atom Count
14
Complexity
387
Defined Atom Stereocenter Count
0
SMILES
O=C(C)NC1=C2C(=CSS2)N(C)C1=O
InChi Key
MHMRAFONCSQAIA-UHFFFAOYSA-N
InChi Code
InChI=1S/C8H8N2O2S2/c1-4(11)9-6-7-5(3-13-14-7)10(2)8(6)12/h3H,1-2H3,(H,9,11)
Chemical Name
N-(4-methyl-5-oxo-4,5-dihydro-[1,2]dithiolo[4,3-b]pyrrol-6-yl)acetamide
Synonyms
Thiolutin; Acetopyrrothin; NSC 3927; NSC-3927; NSC3927
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO : ~6.25 mg/mL (~27.38 mM)
Solubility (In Vivo)
Solubility in Formulation 1: 1.25 mg/mL (5.48 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with sonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 12.5 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: 10% DMSO+40% PEG300+5% Tween-80+45% Saline: 1.25 mg/mL (5.48 mM)

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 4.3804 mL 21.9020 mL 43.8039 mL
5 mM 0.8761 mL 4.3804 mL 8.7608 mL
10 mM 0.4380 mL 2.1902 mL 4.3804 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Biological Data
  • Figure 1. THL affects RNA polymerase II transcript levels., a: Structures of the naturally occurring dithiolopyrrolones thiolutin, holomycin and aureothricin. b: N.crassa cultures were incubated for 4 h with the indicated concentrations of THL and frq RNA was measured. c: N.crassa cultures were incubated in the presence 50μM THL. Samples were harvested after indicated time periods and vvd RNA was quantified by qRT-PCR and normalized to 28S rRNA. d:S.cerevisiae cultures (OD600 = 0.5 – 0.8) were incubated in the presence of 50 μM THL and samples were harvested after the indicated time periods. Transcript levels of not3 were quantified by qRT-PCR. Data were normalized to 18S rRNA. e: Levels of c-myc RNA in HeLa cells decrease with slower kinetics after THL treatment compared to actinomycin D. HeLa cells were incubated in the presence of 10μM THL or 1 μM ActD, respectively. Samples were harvested at indicated time points. c-myc transcript levels were quantified by qRT-PCR. Data were normalized to 18S rRNA. b–e: Error bars indicate ±s.d. from three independent experiments measured in triplicates.[1]. Thiolutin is a zinc chelator that inhibits the Rpn11 and other JAMM metalloproteases. Nat Chem Biol. 2017 Jul;13(7):709-714.
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