Welcome to LookChem.com Sign In|Join Free
  • or


Post Buying Request

4670-05-7 Suppliers

Recommended suppliersmore

Product FOB Price Min.Order Supply Ability Supplier
Cas No: 4670-05-7
USD $ 3.0-3.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Dayang Chem (Hangzhou) Co.,Ltd. Contact Supplier
High quality Theaflavin supplier in China
Cas No: 4670-05-7
No Data 1 Metric Ton 30 Metric Ton/Month Simagchem Corporation Contact Supplier
Factory Supply Theaflavin
Cas No: 4670-05-7
No Data 1 1 Ality Chemical Corporation Contact Supplier
Cas No: 4670-05-7
No Data 10 Milligram 1 Gram/Week shanghai Tauto Biotech Co., Ltd Contact Supplier
High Content Natural Extract Theaflavin HACCP manufacturer
Cas No: 4670-05-7
USD $ 0.1-0.1 / Gram 1 Gram 100 Metric Ton/Year Xi'an Xszo Chem Co., Ltd. Contact Supplier
Cas No: 4670-05-7
No Data 1 Kilogram 10 Metric Ton/Month Henan Tianfu Chemical Co., Ltd. Contact Supplier
Factory Wholesale price theophylline powder CAS 4670-05-7theophylline anhydrous
Cas No: 4670-05-7
No Data 100 Gram 20000 Kilogram/Day Hubei XinRunde Chemical Co., Ltd Contact Supplier
Pharmaceutical Grade CAS 4670-05-7 with competitive price
Cas No: 4670-05-7
USD $ 139.0-210.0 / Kilogram 1 Kilogram 1000 Kilogram/Day Zhuozhou Wenxi import and Export Co., Ltd Contact Supplier
Cas No: 4670-05-7
No Data No Data 10000 Metric Ton/Month Henan Wentao Chemical Product Co., Ltd. Contact Supplier
Cas No: 4670-05-7
No Data 1 Gram 10000 Metric Ton/Month Shanghai Upbio Tech Co.,Ltd Contact Supplier

4670-05-7 Usage


Theaflavins are a group of polyphenol pigments found in both black and oolong teas. They are obtained by the oxidation and dimerization of green tea catechins during the manufacture of black tea and oolong tea. Theaflavins contribute to the characteristic bright orange-red color of black tea. Theaflavins include theaflavin, theaflavin-3-gallate, theaflavin-3'-gallate and theaflavin-3,3'-digallate.Theaflavins are used to manage cholesterol and used to support the heart and digestive system. They could be used as protective agents against cardiovascular disease and cancer. It is also believed that they have a wide range of other pharmaceutical benefits, including antihypertensive, antioxidative and hypolipidemic activities. It is suggested that theaflavins have a potential to be developed as a safe and affordable topical microbicide for preventing sexual transmission of HIV.

Chemical Properties

red to brown powder


Theaflavin is a polyphenolic compound found in black tea. Theaflavin derivatives show anti-HIV-1 activity by targeting gp41. Theaflavin is a potent inhibitor of amyloid-β (Aβ) and α-synuclein (αS) fibrillogenesis. Theaflavin also shows potent anti-tumor and and antoxidant activities.


ChEBI: Theaflavin is a biflavonoid that is 3,4,5-trihydroxybenzocyclohepten-6-one which is substituted at positions 1 and 8 by (2R,3R)-3,5,7-trihydroxy-3,4-dihydro-2H-chromen-2-yl groups. It is the main red pigment in black tea. It has a role as an antioxidant, a chelator, a plant metabolite, a radiation protective agent and an antibacterial agent. It is a polyphenol and a biflavonoid.


Theaflavin is a polyphenolic flavonoid that has been found in black tea and has diverse biological activities, including antineoplastic, antioxidant, anticancer, anti-inflammatory, cholesterol lowering and antiviral properties.

Biological Activity

Theaflavin is a suitable natural inhibitor against influenza A (H1N1) neuraminidase.


[1] Lai Kwok Leung, Yalun Su, Ruoyun Chen, Zesheng Zhang, Yu Huang, Zhen-Yu Chen (2001) Theaflavins in Black Tea and Catechins in Green Tea Are Equally Effective, J. Nutr., 131, 2248-2251[2] Yang J, Li L, Tan S, Jin H, Qiu J, Mao Q, Li R, Xia C, Jiang ZH, Jiang S, Liu S (2012) A Natural Theaflavins Preparation Inhibits HIV-1 Infection by Targeting the Entry Step: Potential Applications for Preventing HIV-1 Infection, Fitoterapia, 83, 348-355[3] http://www.xtend-life.com/information/ingredients/theaflavins

Check Digit Verification of cas no

The CAS Registry Mumber 4670-05-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,7 and 0 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4670-05:
87 % 10 = 7
So 4670-05-7 is a valid CAS Registry Number.

4670-05-7 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Sigma-Aldrich (55016)  Theaflavin  analytical standard 4670-05-7 55016-1MG 6,294.60CNY Detail
Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)


What can I do for you?
Get Best Price

Get Best Price for 4670-05-7