天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
+1 (818) 612-2111
Inquriy
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

RFQ
skype
MY Account
Top
Postion:Product Catalog >Biochemical Engineering>Natural Products>Hypericin
Hypericin
  • Hypericin
  • Hypericin
  • Hypericin
  • Hypericin
  • Hypericin

Hypericin NEW

Price $20 $10 $1
Package 1kg 100kg 1000kg
Min. Order: 1kg
Supply Ability: 10 tons
Update Time: 2024-10-25

Product Details

Product Name: Hypericin CAS No.: 548-04-9
EC-No.: 208-941-0 Min. Order: 1kg
Purity: 0.99 Supply Ability: 10 tons
Release date: 2024/10/25

Hypericin is a naphthodianthrone, a red-colored anthraquinone-derivative, which, together with hyperforin, is one of the principal active constituents of Hypericum (Saint John's wort). Hypericin is believed to act as an antibiotic, antiviral and non-specific kinase inhibitor. Hypericin may inhibit the action of the enzyme dopamine β-hydroxylase, leading to increased dopamine levels, although thus possibly decreasing norepinephrine and epinephrine.
It was initially believed that the anti-depressant pharmacological activity of hypericin was due to inhibition of monoamine oxidase enzyme. The crude extract of Hypericum is a weak inhibitor of MAO-A and MAO-B. Isolated hypericin does not display this activity, but does have some affinity for NMDA receptors. This points in the direction that other constituents are responsible for the MAOI effect. The current belief is that the mechanism of antidepressant activity is due to the inhibition of reuptake of certain neurotransmitters.
The large chromophore system in the molecule means that it can cause photosensitivity when ingested beyond threshold amounts. Photosensitivity is often seen in animals that have been allowed to graze on St. John's Wort. Because hypericin accumulates preferentially in cancerous tissues, it is also used as an indicator of cancerous cells. In addition, hypericin is under research as an agent in photodynamic therapy, whereby a biochemical is absorbed by an organism to be later activated with spectrum-specific light from specialized lamps or laser sources, for therapeutic purposes. The antibacterial and antiviral effects of hypericin are also believed to arise from its ability for photo-oxidation of cells and viral particles.
Hypericin derives from polyketides cyclisation.
The biosynthesis of hypericins is in the polyketide pathway where an octaketide chain goes through processes of cylizations and decarboxylations form emodin anthrone which are believed to be the precursors of hypericin. Oxidization reactions yield protoforms which then are converted into hypericin and pseudohypericin. Theses reactions are photosensitive and take place under exposure to light and using the enzyme Hyp-1.

Name

Hypericin

EINECS208-941-0
CAS No.548-04-9Density1.915 g/cm3
PSA155.52000LogP5.39180
Solubility1 M NaOH: 10 mg/mLMelting Point299-301 °C
FormulaC30H16O8Boiling Point1020.3 °C at 760 mmHg
Molecular Weight504.45Flash Point584.6 °C
Transport InformationUN 2811AppearanceFine Powder

Appearance and character:Brown powder

Density: 1.915g /cm3

Boiling point: 1020.3oC at 760 mmHg

Melting point: 299-301°C

Flash point: 584.6oC

Refractive index: 2.13

Storage condition: Store at +4oC

Company Profile Introduction

Hebei Yanxi Chemical Co. LTD., mainly produce the Carbomer940/980/u21 and lead acetate and lead oxide, lead stearate, lead salt, at the same time operating organic intermediates, surfactants, Food additive,inorganic salt, plant extracts, cosmetics raw material, etc., through long-term development, hebei said bush chemical co., LTD. In hebei province has become a collection of r &d, production, sales in the integration of high-tech enterprises.

You may like

Recommended supplier

Product name Price   Suppliers Update time
$150.00/1kg
VIP1Y
Hebei Zhuanglai Chemical Trading Co Ltd
2024-12-12
$52.00/1mg
VIP5Y
TargetMol Chemicals Inc.
2024-11-19
$0.00/1kg
VIP2Y
Hebei Kingfiner Technology Development Co.Ltd
2024-05-21
$0.00/1kg
VIP1Y
Shaanxi TNJONE Pharmaceutical Co., Ltd
2024-03-29
$0.00/25KG
VIP5Y
Hebei Mojin Biotechnology Co., Ltd
2023-10-13
$0.00/25kg
Shaanxi Haibo Biotechnology Co., Ltd
2023-09-05
$0.00/25kg
VIP2Y
Bonerge(Hunan) Lifescience Co., Ltd.
2023-05-05
$0.00/10g
VIP3Y
Changsha Staherb Natural Ingredients Co., Ltd.
2022-08-10
$15.00/1KG
Zhuozhou Wenxi import and Export Co., Ltd
2021-07-11
$130.00/10ml
Baoji Guokang Healthchem co.,ltd
2021-06-07
  • Since: 2020-05-25
  • Address: Zhanggeji Village, Fengjiazhai Town, Guangzong County, Xingtai City, Hebei Province
INQUIRY
Peter Lee
17531190177