Best Price Pure Natural Camptothecin Extract Powder CAS NO.7689-03-4

herbal extract camptothecin is an alkaloid derived from the chinese tree camptotheca acuminata decne. herbal extract camptothecin and its derivatives are unique in their ability to inhibit dna topoisomerase i, by stabilizing a covalent reaction intermediate termed the cleavable complex which ultimately causes tumor cell death.

it is widely believed that herbal extract camptothecin analogs exhibited remarkable anti-tumour and anti-leukaemia activity. topoisomerase is a basilic enzyme in the process of dna replication, herbal extract camptothecin is responsible for the winding / unwinding of the supercoiled dna composing the chromosomes. if the chromosomes cannot be unwound, transcription of dna message cannot occur and the protein cannot be synthesized, herbal extract camptothecin ultimately causes cell death.

at present, some camptothecin analogs, either semi-synthetic or synthetic drug based on camptothecin, have been applied cancerous therapy such as topotecan and irinotecan while others have been obtained satisfying curative effects in clinic.

product name	camptothecin extract powder
cas no	7689-03-4	specifications content	98%
molecular formula	c20h16n2o4	detection method	hplc
weight	348.34	products shape	pale yellow needle crystal
molecular structure
description	camptothecin (cpt) is a cytotoxic quinoline alkaloid which inhibits the dna enzyme topoisomerase i (topo i). it was discovered in 1966 by m. e. wall and m. c. wani in systematic screening of natural products for anticancer drugs. it was isolated from the bark and stem of camptotheca acuminata (camptotheca, happy tree), a tree native to china used as a cancer treatment in traditional chinese medicine. cpt showed remarkable anticancer activity in preliminary clinical trials but also low solubility and (high) adverse drug reaction. because of these disadvantages synthetic and medicinal chemists have developed numerous syntheses of camptothecin and various derivatives to increase the benefits of the chemical, with good results. two cpt analogues have been approved and are used in cancer chemotherapy today, topotecan and irinotecan.
main function	herbal extract camptothecin can make changes in skin epidermal keratinization process. herbal extract camptothecin is used for anti-cancer, anti-virus, immune inhibition, anti early pregnancy. herbal extract camptothecin has the function of treatment of gastric cancer, liver cancer, head and neck cancer and leukemia.
application	1.camptothecin and its derivatives are unique in their ability to inhibit dna topoisomerase i, by stabilizing a covalent reaction intermediate termed the cleavable complex which ultimately causes tumor cell death. 2.in clinical it is widely believed that camptothecin analogs exhibited remarkable anti-tumour and anti-leukaemia activity. topoisomerase is a basilic enzyme in the process of dna replication, it is responsible for the winding / unwinding of the supercoiled dna composing the chromosomes. if the chromosomes cannot be unwound, transcription of dna message cannot occur and the protein cannot be synthesized, it ultimately causes cell death. 3.application of camptothecin in clinic is limited due to serious side effects and poor water-solubility. 4.at present, some camptothecin analogs,either semi-synthetic or synthetic drug based on camptothecin, have been applied cancerous therapy such as topotecan and irinotecan while others have been obtained satisfying curative effects in clinic.and insomnia. do not take horny goat weed if you are taking heart medicines.

package & storage

-25kg/drum, packing in drums and two plastic bags inside .package and storage

-store in a well-closed container away from moisture

shipping:
3-6 working days after payment confirmed.


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4. can i make a small order
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1.yes, our mininum order is 1kg, and it will be packed in the small bag, alunium foil bag, sealed.
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5. how many days the small order would arrive
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1. by dhl, fedex, tnt, ups, in 5-7 days
2. by ems, in 10-15days


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- customer recognition is the powder of our service
- we seriously promise here all of the products from rd health ingredients will definitely 101% top quality.
- if not, 100% refundable and offer compensation at once.

company information

xian tianrui biotech co., ltd is a research and development, production and trade into an integrated enterprise, and its main products are all kinds of plant extracts. the products are raw materials for. functional food, nutritional supplements, medicaments, cosmetics and so on. the company with excellent product quality, high business reputation, strong technical force, perfect quality assurance system, flexible operational mechanism, is deeply welcome among domestic and foreign merchants.

we are adhering to the business philosophy of "customer first, forge ahead" and insist "customer first" principle to provide our clients with quality services. we believe that quality is the life of our company. so we manufacture our products in strict quality management system during the whole entire production process. sinuote people warmly welcome domestic and foreign friends cooperate with us.


contact information

contact person: annabelqi

tel: 86-13275321859