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Dichotomine B
Dichotomine B
ChemFaces products have been cited in many studies from excellent and top scientific journals
Product Name Dichotomine B
Price: $318 / 5mg
CAS No.: 755036-41-0
Catalog No.: CFN95193
Molecular Formula: C14H12N2O4
Molecular Weight: 272.3 g/mol
Purity: >=98%
Type of Compound: Alkaloids
Physical Desc.: Powder
Source: The herbs of Stellaria dichotoma
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download: COA    MSDS
Similar structural: Comparison
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Size /Price /Stock 10 mM * 1 mL in DMSO / $222.6 / In-stock
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Description: Reference standards.
Dichotomine B Description
Source: The herbs of Stellaria dichotoma
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals

Cell. 2018 Jan 11;172(1-2):249-261.e12.
doi: 10.1016/j.cell.2017.12.019.
IF=36.216(2019)

PMID: 29328914

Cell Metab. 2020 Mar 3;31(3):534-548.e5.
doi: 10.1016/j.cmet.2020.01.002.
IF=22.415(2019)

PMID: 32004475

Mol Cell. 2017 Nov 16;68(4):673-685.e6.
doi: 10.1016/j.molcel.2017.10.022.
IF=14.548(2019)

PMID: 29149595

ACS Nano. 2018 Apr 24;12(4): 3385-3396.
doi: 10.1021/acsnano.7b08969.
IF=13.903(2019)

PMID: 29553709

Nature Plants. 2016 Dec 22;3: 16206.
doi: 10.1038/nplants.2016.205.
IF=13.297(2019)

PMID: 28005066

Sci Adv. 2018 Oct 24;4(10): eaat6994.
doi: 10.1126/sciadv.aat6994.
IF=12.804(2019)

PMID: 30417089
Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.6724 mL 18.3621 mL 36.7242 mL 73.4484 mL 91.8105 mL
5 mM 0.7345 mL 3.6724 mL 7.3448 mL 14.6897 mL 18.3621 mL
10 mM 0.3672 mL 1.8362 mL 3.6724 mL 7.3448 mL 9.1811 mL
50 mM 0.0734 mL 0.3672 mL 0.7345 mL 1.469 mL 1.8362 mL
100 mM 0.0367 mL 0.1836 mL 0.3672 mL 0.7345 mL 0.9181 mL
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
Protocol
Structure Identification:
J Nat Prod. 2004 Sep;67(9):1464-9.
Structures of new beta-carboline-type alkaloids with antiallergic effects from Stellaria dichotoma(1,2).[Pubmed: 21090796 ]
The aqueous ethanolic extract from the roots of Stellaria dichotoma showed an antiallergic effect on ear passive cutaneous anaphylaxis (PCA) reaction in mice (in vivo) and inhibitory activity on the release of beta-hexosaminidase in RBL-2H3 cells (in vitro).
METHODS AND RESULTS:
From the aqueous ethanolic extract, new beta-carboline-type alkaloids, dichotomine A (1), Dichotomine B (2), dichotomine C (3), and dichotomine D (4) and dichotomides I (5) and II (6), were isolated. The structures of the new constituents (1-6) were determined on the basis of chemical and physicochemical evidence, including the application of the modified Mosher's method.
CONCLUSIONS:
The effects of the isolated constituents on the release of beta-hexosaminidase in RBL-2H3 cells were examined, and 3 was found to show inhibitory activity (IC(50) = 62 microM). Moreover, 3 also inhibited the releases of antigen-IgE-mediated TNF-alpha and IL-4 (19 and 15 microM, respectively) in RBL-2H3 cells, both of which participate in the late phase of type I allergic reactions.
Ginsenoside Rb1

Catalog No: CFN99964
CAS No: 41753-43-9
Price: $40/20mg
4',5,6,7-Tetramethoxyflavone

Catalog No: CFN91034
CAS No: 1168-42-9
Price: $258/5mg
Vincristine

Catalog No: CFN98589
CAS No: 57-22-7
Price: $138/20mg
Xanthotoxol

Catalog No: CFN98016
CAS No: 2009-24-7
Price: $30/20mg
Sodium Danshensu

Catalog No: CFN99163
CAS No: 67920-52-9
Price: $40/20mg
Spathulenol

Catalog No: CFN97150
CAS No: 6750-60-3
Price: $ /
Baicalein

Catalog No: CFN98783
CAS No: 491-67-8
Price: $40/20mg
4-O-Feruloylquinic acid

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CAS No: 2613-86-7
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Demethylsuberosin

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Price: $188/20mg
(-)-Syringaresinol

Catalog No: CFN92500
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Price: $268/10mg
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