L-Cystine and L-Cysteine Base and S-Carboxymethyl-L-Cysteine and N-acetyl-L-Cysteine

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L-Cystine and L-Cysteine Base and S-Carboxymethyl-L-Cysteine and N-acetyl-L-Cyst...
Posting date : Jun 06, 2011
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Place of Origin
China [CN]
HS-CODE
30-
Package & Delivery Lead Time
Delivery Lead Time
2012-06-06
Detailed Description
L-Cystine and L-Cysteine Base and S-Carboxymethyl-L-Cysteine and N-acetyl-L-Cysteine 1. L-Cystine, CaS NO.: 56-89-3 Chemical Name: L-Cystine Molecular Formula: C6H12N2O4S2 Molecular Weight: 240.29 Characteristics: a colorless or white crystalline substance of hexagon,or crystalline powder, easily soluble in acid and alkali, insoluble in water and organic solvents such as alcohol, ethyl ether. Packing: 25kg/drum,25kg/carton Quality Standard: aJI92/USP28/EP5/FCCIV 2. L-Cysteine Base, CaS NO.: 52-90-4 Chemical Name: L-Cysteine Base Molecular Formula: C3H7NO2S Molecular Weight: 121.15 Characteristics: White crystalline powder, tasteless, easily soluble in water but insoluble in alcohol and ether. Packing: 25kg/drum, 25kg/carton Qualified Standard: aJI92/USP28/EP5/FCCIV 3. S-Carboxymethyl-L-Cysteine, CaS NO.: 638-23-3 Chemical Name: S-Carboxymethyl-L-Cysteine Molecular Formula: C5H9NO4S Molecular Weight: 179.19 Characteristics : White crystals or crystalline powder, strongly acid taste Packing: 25kg/drum, 25kg/carton Quality Standard: aJI92/USP28/EP5/FCCIV 4. N-acetyl-L-Cysteine, CaS NO: 616-91-1 Chemical Name: N-acetyl-L-Cysteine Molecular Formula: C5H9NO3S Molecular Weight: 163.19 Characteristics: White crystals or crystalline powder , strongly acid taste Specification: aJI92, USP24 appearance: White crystals or crystalline powder mutualchem(at)gmail(dot)com

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