Fudosteine CAS NO.13189-98-5

Hebei yanxi chemical co. LTD.  has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of chemicals. 
After many years of efforts, we have established stable and friendly business relations with dozens of European and American pharmaceutical companies, multinational chemical companies and importers.At home and many production plants and research and development units have established long - term commission processing and production relations.We have a number of laboratories specializing in technology development and custom synthesis, as well as some production bases, mainly in hebei, sichuan, jiangsu and shandong.
Our company possesses the right of self-support import & export, a strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.
Looking to the future, we will adhere to the spirit of “professional, innovative, integrity, development”, and adhere to the management philosophy of “customer-orientation and pursing development via integrity” and through which to provide customers with first-class products and service. We sincerely welcome friends both at home and abroad to visit our company and hope to achieve win-win cooperation with you!

The basic information

Chinese name: fedorstein

Chinese alias: fedorstein;(-)-(R)-2- amino3 -(3- hydroxypropyl sulfide) propionic acid

English name: Fudosteine

(R) -2-amino -3-(3-hydroxypropylthio)propionic acid;S - (3 - hydroxypropyl) - L - cysteine;S - (3 - hydroxypropyl) cysteine

CAS no. : 13189-98-5

Molecular formula: C6H13NO3S

Si temple for a happy

Si temple for a happy

Molecular weight: 179.23

Molecular structure :(right)

Description: white crystalline powder, no odor

Physical and chemical information

Appearance and properties: gray - white crystal

Density: 1.301 g/cm3

Melting point: 210.9-212.5 - DHS C

Boiling point: 354.5 is C at 760 mmHg

Flash: DHS 168.2 C

Refractive index: 1.558

Vapor pressure: 1.92 e-06 mmHg at 25 ° C [2]

Than the curl: 19.0-23.0 °

Chemical identification should be presented by positive reaction infrared spectroscopy

The infrared absorption spectrum of the product should be consistent with that of the control product

Dry weight loss is less than or equal to 0.5%

The blazing residue is less than 0.5%

PH 4.0-6.5

Impurities total 1.0% or less

The clarity of the solution should be clarified, such as turbidity, no thicker than that of standard turbidity reading solution no. 1.

The content of dextrorotastan was determined to be 98.5% or greater (including C6H13NO3S in dry products).

Quality standard: CP2005/usp28

Usage: it is used to treat chronic respiratory diseases such as bronchial asthma, bronchiectasis, chronic bronchitis, tuberculosis, pneumoconiosis and emphysema