ent-Kauran-17,19-dioic acid

ent-Kauran-17,19-dioic acid
Product Name ent-Kauran-17,19-dioic acid
CAS No.: 60761-79-7
Catalog No.: CFN97033
Molecular Formula: C20H30O4
Molecular Weight: 334.5 g/mol
Purity: >=98%
Type of Compound: Diterpenoids
Physical Desc.: Powder
Source: The herbs of Siegesbeckia orientalis
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Price:
Reference standards.
Inquire / Order: manager@chemfaces.com
Technical Inquiries: service@chemfaces.com
Tel: +86-27-84237783
Fax: +86-27-84254680

Address:
1 Building, No. 83, CheCheng Rd., Wuhan Economic and Technological Development Zone, Wuhan, Hubei 430056, PRC
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

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.
  • Sci Rep. 2017, 17332(7)
  • The Japan Society for Analytical Chemistry2018, 67(4):201-206
  • Int. Conference on Med. Sci. and Bio.2017, 17973
  • Anal Chim Acta.2018, 1039:162-171
  • Sci Rep.2018, 8:15059
  • Evid Based Complement Alternat Med.2018, 2018:3610494
  • Int J Cosmet Sci.2019, 41(1):12-20
  • Int Immunopharmacol.2019, 71:361-371
  • J Sep Sci.2018, 41(7):1682-1690
  • Mol Pharm.2017, 14(9):3164-3177
  • Sugeroside

    Catalog No: CFN96653
    CAS No: 41743-57-1
    Price: Inquiry(manager@chemfaces.com)
    Suavioside A

    Catalog No: CFN96655
    CAS No: 133740-37-1
    Price: Inquiry(manager@chemfaces.com)
    ent-16beta,17-Isopropylidenedioxykaurane

    Catalog No: CFN98989
    CAS No: 58493-71-3
    Price: Inquiry(manager@chemfaces.com)
    Sculponeatin N

    Catalog No: CFN99267
    CAS No: 1169805-98-4
    Price: Inquiry(manager@chemfaces.com)
    Sculponeatin O

    Catalog No: CFN99268
    CAS No: 1169806-00-1
    Price: Inquiry(manager@chemfaces.com)
    ent-17-Hydroxykaura-9(11),15-dien-19-oic acid

    Catalog No: CFN96482
    CAS No: 1588516-88-4
    Price: Inquiry(manager@chemfaces.com)
    ent-17-Hydroxykaur-15-en-19-oic acid

    Catalog No: CFN97752
    CAS No: 35030-38-7
    Price: Inquiry(manager@chemfaces.com)
    ent-Kauran-17,19-dioic acid

    Catalog No: CFN97033
    CAS No: 60761-79-7
    Price: Inquiry(manager@chemfaces.com)
    Siegeskaurolic acid

    Catalog No: CFN96674
    CAS No: 52645-97-3
    Price: Inquiry(manager@chemfaces.com)
    ent-16beta,17-Dihydroxy-19-kauranoic acid

    Catalog No: CFN98424
    CAS No: 3301-61-9
    Price: Inquiry(manager@chemfaces.com)
    Journal of Separation Science, 2012, 35(19).
    Simultaneous determination of seven major diterpenoids in Siegesbeckia pubescensMakino by high‐performance liquid chromatography coupled with evaporative light scattering detection[Reference: WebLink]

    METHODS AND RESULTS:
    A novel HPLC method with evaporative light scattering detection was developed for the simultaneous quantification of seven major diterpenoids of two types, including ent‐pimarane type: Kirenol, Hythiemoside B, Darutigenol, and ent‐kaurane type: ent‐16β,17,18‐trihydroxy‐kauran‐19‐oic acid, ent‐17,18‐dihydroxy‐kauran‐19‐oic acid, ent‐16β,17‐dihydroxy‐kauran‐19‐oic acid, 16α‐hydro‐ent-Kauran-17,19-dioic acid in the aerial parts of Siegesbeckia pubescens Makino, an important traditional Chinese medicinal herb. Chromatographic separation was achieved on a Waters Symmetry ShieldTM RP18 column (250 mm× 4.6 mm id, 5 μm) with a gradient mobile phase (A: 0.3% v/v aqueous formic acid and B: acetonitrile) at a flow rate of 1.0 mL/min. The drift tube temperature of evaporative light scattering detection was set at 103°C, and nitrogen flow rate was 3.0 L/min. The method was validated for accuracy, precision, LOD, and LOQ. All calibration curves showed a good linear relationship (r > 0.999) in test range. Precision was evaluated by intra‐ and interday tests that showed RSDs were less than 3.5%. Accuracy validation showed that the recovery was between 96.5 and 102.0% with RSDs below 2.8%.
    CONCLUSIONS:
    The validated method was successfully applied to determine the contents of seven diterpenoids in the different parts of Siegesbeckia pubescens Makino from two sources and to determine the contents of ent‐pimarane, ent‐kaurane, and total diterpenoids.
    3,8'-Biapigenin

    Catalog No: CFN99025
    CAS No: 101140-06-1
    Price: $418/5mg
    Ononin

    Catalog No: CFN99136
    CAS No: 486-62-4
    Price: $148/20mg
    Arjunic acid

    Catalog No: CFN98397
    CAS No: 31298-06-3
    Price: $318/5mg
    Genipin-1-O-gentiobioside

    Catalog No: CFN98524
    CAS No: 29307-60-6
    Price: $218/20mg
    Trifolirhizin

    Catalog No: CFN97160
    CAS No: 6807-83-6
    Price: $128/20mg
    Pyrocurzerenone

    Catalog No: CFN96169
    CAS No: 20013-75-6
    Price: $388/20mg
    Iridin

    Catalog No: CFN96557
    CAS No: 491-74-7
    Price: $188/20mg
    Selina-4(15),7(11)-dien-8-one

    Catalog No: CFN95078
    CAS No: 54707-47-0
    Price: $288/10mg
    Cassiaside C

    Catalog No: CFN95120
    CAS No: 119170-52-4
    Price: $318/10mg
    Momordicoside X

    Catalog No: CFN95170
    CAS No: 1333321-50-8
    Price: $368/5mg