久久影院一区二区三区-久久影院午夜伦手机不四虎卡-久久影院毛片一区二区-久久影视一区-在线精品91青草国产在线观看-在线激情小视频

您好,歡迎來到云企聚![服務商申請]關于我們首頁
常州康運精細化工公司
康運精細化工    常州康運精細化工公司
維A酸
維A酸

維A酸

暫無
發布日期:1970/01/01
  • 產品詳情

維A酸

TRETINOIN

Chemical Name

Tretinoin

CAS Number302-79-4
Molecular FormulaC20H28O2

Molecular Weight

300.44

Molecular Structure

H6}XJNO(E55NH`%2U$Y{YAQ.png


Packing

25kg/drum

Capacity

Production upon order

Storage

Store in a tightly sealed container away from heat and direct light, and in a cool dry place.

Application

Tretinoin is most commonly used as a form of acne treatment.


SPECIFICATION

Items

Specification

Description

 Yellow crystalline powder

Identification

The IR absorption spectrum should correspond with reference spectrum

Should exhibits maximum absorption at 352nm

Loss on drying

Not more than 0.5%

Sulphated ash

Not more than 0.1%

Heavy Metals

Not more than 0.002%

Related substances:
     Isotretinoin
     Unspecified Impurities
     Total impurities

0.5% MAX
0.2% MAX
1.0% MAX

Organic Volatile Impurity

Ethyl acetate Not more than 5000 ppm

Ethanol Not more than 5000 ppm

Assay

98.0~102.0 % (calculated on the dried basis)

Standard

EP 8.0