High Quality 107868-30-4 Exemestane

Basic Info

Model No.: LYN-107868-30-4

CAS: 107868-30-4

Name:: Exemestane

Shelf Life: 2 Years

Sample: Available

Additional Info

Packaging:  25kg/Drum

Productivity: 10000kg

Brand: zhishang

Transportation: Ocean,Land,Air

Place of Origin: Shandong, China (Mainland)

Supply Ability: in stock

Certificate: ISO CE

HS Code: 1060.24000

Port: Shanghai,Tianjin,Qingdao

Product Description

High Quality 107868-30-4 Exemestane

Description

1 CAS: 107868-30-4

3 Formula: C20H24O2  

4 Mol. mass: 296.403 g/mol

5 Specification: Enterprise standard

 6 Appearance: white crystalline powder

 7 exemestane Assay: 99%

Function

Exemestane (trade name Aromasin) is a drug used to treat breast cancer. It is a member of the class of drugs known as aromatase inhibitors. Some breast cancers require estrogen to grow. Those cancers have estrogen receptors (ERs), and are called ER-positive. They may also be called estrogen-responsive,hormonally-responsive, hormone-receptor-positive. Aromatase is an enzyme that synthesizes estrogen. Aromatase inhibitors block the synthesis of estrogen. This lowers the estrogen level, and slows the growth of cancers.

Application

1. Exemestane is an oral steroidal aromatase inhibitor that is used in ER-positive breast cancer in addition to surgery and/or radiation in post-menopausal women.

2. Exemestane is an irreversible, steroidal aromatase inactivator, structurally related to the natural substrate androstenedione.

3. It acts as a false substrate for the aromatase enzyme, and is processed to an intermediate that binds irreversibly to the active site of the enzyme causing its inactivation, an effect also known as “suicide inhibition.”

4. By being structurally similar to enzyme targets, Exemestane permanently binds to the enzymes, preventing them from converting androgen into estrogen

Specification

TEST ITEMS

       SPECIFICATION

RESULTS

Description

White Crystalline Powder

White Powder

Identification

Positive

Positive

Assay(by HPLC)

98.0~102.0%

98.64%

Absorbance(E1cm)

465~495

482.5

Melting Point

191~195°C

193.5~195.0°C

Loss On Drying

0.5%max

0.19%

Specific Rotation

+288°~ +298°

+290.2°

Residue On Ignition

0.1%max

0.03%

Related Substances

Total:1.5%max

<1.3%

 

Single:0.5%max

<0.4%

Residue Solvents

0.2%max

0.10%

Heavy Metals

20PPm max

<10PPm

 

 

 

Conclusion

The specification conform with enterprise standard.

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