High quality best price 638-23-3 with reasonable price and fast delivery !!

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High quality best price 638-23-3  with reasonable price and fast delivery !!
High quality best price 638-23-3  with reasonable price and fast delivery !!
High quality best price 638-23-3  with reasonable price and fast delivery !!
High quality best price 638-23-3  with reasonable price and fast delivery !!
High quality best price 638-23-3  with reasonable price and fast delivery !!
High quality best price 638-23-3  with reasonable price and fast delivery !!

High quality best price 638-23-3 with reasonable price and fast delivery !!

  • Item No.TOP
    MOQ1 Kilogram
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From $15.5015.40 / Kilogram
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If over 500pcs, mass production will start until pre-production sample has been approved.

Est. 7 days production

Quick Details
Product name S-Carboxymethyl-L-cysteine
MW179.19
Place of Origin CN;SHN
Usage Animal Pharmaceuticals
Brand Name xigema
certificateISO
Model Number TOP
CAS638-23-3
Colorwhite
density1.315
Melting point 205.5°C
Storage Cool Dry Place
Shelf Life 2 years
Grade Standard Medicine Grade
Type Auxiliaries and Other Medicinal Chemicals
CAS No. 638-23-3
Other Names carbocistein
MFC5H9NO4S
EINECS No. 246-934-4
Purity98.5%
Grade Medicine Grade

Packaging & Delivery

Selling Units:
Kilogram
Lead Time:
Quantity(Kilogram)1 - 1>1
Est. Time(days)3To be negotiated
Product Description

company

 

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Product Name

 S-carboxymethyl-L-cysteine

CAS number

 638-23-3

Molecular formula

 C5H9NO4S

Molecular weight

 179.19

Appearance

 white to slightly off-white amorphous powder

Melting point

205-207ºC

Flash point

191.8ºC

Relative density

1.451g/cm3

 

 

 

 

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Test Item

Specification: European Pharmacopoeia 7TH

Description

A white, crystalline powder, practically insoluble in water, in alcohol and in ether. It dissolves in dilute mineral acids and in dilute solutions of alkali hydroxides.

Identification

Test A (Specific Optical rotation)

It complies with the test for specific optical rotation.

Test B(IR)

The IR spectrum of the sample is concordant with the spectrum of the reference standard, Carbocisteine CRS.

Test C(TLC)

The principal spot in the chromatogram obtained with the test solution (b) is similar in position, color and size to the principal spot in the chromatogram obtained with the reference solution(a)

Test D(Chemical reaction)

. Dark red color is produced, which changes to brown and then to yellow within a few minutes.

pH

2.8 ~3.0

specific rotation [α]D 20

-32.5° ~ -35.5°

State of solution (Transmittance)

Solution S is clear and colourless

Not less than 95.0%

Ninhydrin-positive substances

Not more than 0.5%

Chloride(Cl)

Not more than 0.15%

Sulfate(SO4)

Not more than 0.03%

Heavy metals(Pb)

Not more than 0.001%

Loss on Drying

Not more than 0.5%

Residue on ignition(sulfated)

Not more than 0.3%

Assay

98.5% ~ 101.0 %

 

 

 

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 Hair finishing agent and adjusting agent, it can resist acne.
It can be used in the curing of chronic tracheitis, emphysema, pulmonary.

Packaging & Shipping

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Our Services

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Company Information

 

Qingdao Sigma Chemical Co.,Ltd is a global chemical industry manufacturers and suppliers of pharmaceuticals 

and intermediates, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc.

The aim of Qingdao Sigma Chemical Co.,Ltd is a quality policy that "Elements in the system 

all have been satisfied, Personnel has been trained; Every batch of material is checked, Each procedure guarantees the quality; Every bag of our products is top grade, Service is thoughtful all the time, quality and reputation to increase market share and promote enterprise development. The quality, colors and forms of our products have reached a high level in related chemical industry, which relies on characteristic and advanced processing technology and it has gained a high and reliable reputation from customers at both quality and services.

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