Impurity Reference Standard - Products

Acetylcysteine

CAT No: CL-ALC-01 CAS No: 616-91-1 Mol Wt: 163.2 Mol F: C5H9NO3S Inv Status: In Stock

Chemical Name: (2R)-2-Acetamido-3-sulfanylpropanoic acid ; N-Acetyl-l-cysteine (as per USP)

Acetylcysteine EP Impurity A

CAT No: CL-ALC-02 CAS No: 56-89-3 Mol Wt: 240.3 Mol F: C6H12N2O4S2 Inv Status: Custom Synthesis

Chemical Name: 3,3??-Disulfanediylbis[(2R)-2-aminopropanoic acid]

Acetylcysteine EP Impurity B

CAT No: CL-ALC-03 CAS No: 52-89-1 Mol Wt: 121.2 : 36.5 Mol F: C3H7NO2S : HCl Inv Status: Custom Synthesis

Chemical Name: (2R)-2-Amino-3-sulfanylpropanoic acid Hydrochloride

Acetylcysteine EP Impurity C

CAT No: CL-ALC-04 CAS No: 5545-17-5 Mol Wt: 324.4 Mol F: C10H16N2O6S2 Inv Status: In Stock

Chemical Name: 3,3??-Disulfanediylbis[(2R)-2-acetamidopropanoic acid]

Acetylcysteine EP Impurity D

CAT No: CL-ALC-05 CAS No: 18725-37-6 Mol Wt: 205.2 Mol F: C7H11NO4S Inv Status: Custom Synthesis

Chemical Name: (2R)-2-Acetamido-3-(acetylsulfanyl)propanoic acid

Acetylcysteine Impurity 1

CAT No: CL-ALC-06 CAS No: 15058-19-2 Mol Wt: 145.2 : 23.0 Mol F: C5H7NO2S : Na Inv Status: Custom Synthesis

Chemical Name: 2-Methyl-4,5-dihydrothiazole-4-carboxylic acid, sodium salt

Acetylcysteine Impurity 2

CAT No: CL-ALC-07 CAS No: NA Mol Wt: 237.3 Mol F: C9H19NO4S Inv Status: Custom Synthesis

Chemical Name: N,S-Bis(3-hydroxypropyl)-L-cysteine

Acetylcysteine Impurity 3

CAT No: CL-ALC-08 CAS No: 282727-77-9 Mol Wt: 195.2 Mol F: C5H9NO5S Inv Status: Custom Synthesis

Chemical Name: Acetyl(sulfino)-D-alanine

Acetylcysteine Impurity 4

CAT No: CL-ALC-09 CAS No: 7280-90-2 Mol Wt: 219.3 Mol F: C8H13NO4S Inv Status: Custom Synthesis

Chemical Name: N-acetyl-S-propionyl-L-cysteine

Acetylcysteine Impurity 5

CAT No: CL-ALC-10 CAS No: 140226-30-8 Mol Wt: 219.3 Mol F: C8H13NO4S Inv Status: Custom Synthesis

Chemical Name: N-Acetyl-S-(3-oxopropyl)-L-cysteine

Acetylcysteine Impurity 6

CAT No: CL-ALC-11 CAS No: NA Mol Wt: 163.2 Mol F: C5H9NO3S Inv Status: Custom Synthesis

Chemical Name: (4S)-2-Hydroxy-2-methylthiazolidine-4-carboxylic acid

Acetylcysteine Impurity 7

CAT No: CL-ALC-12 CAS No: 137698-08-9 Mol Wt: 250.27 Mol F: C8H14N2O5S Inv Status: Custom Synthesis

Chemical Name: N-Acetyl-S-(3-amino-2-hydroxy-3-oxopropyl)-L-cysteine

S-Acetylcysteine

CAT No: CL-ALC-13 CAS No: 60333-15-5 Mol Wt: 163.19 Mol F: C5H9NO3S Inv Status: In Stock

Chemical Name: 3-(acetylthio)-2-aminopropanoic acid

L-Cysteic Acid

CAT No: CL-ALC-14 CAS No: 498-40-8 Mol Wt: 169.2 Mol F: C3H7NO5S Inv Status: Custom Synthesis

Chemical Name: (R)-2-Amino-3-sulfopropanoic Acid

L-Cysteinyl-L-cysteine

CAT No: CL-ALC-15 CAS No: 18048-87-8 Mol Wt: 224.3 Mol F: C6H12N2O3S2 Inv Status: Custom Synthesis

Chemical Name: L-cysteinyl-L-cysteine

L-Cystine Dimethyl Ester

CAT No: CL-ALC-16 CAS No: 1069-29-0 Mol Wt: 268.3 Mol F: C8H16N2O4S2 Inv Status: Custom Synthesis

Chemical Name: Dimethyl 3,3'-disulfanediyl(2R,2'R)-bis(2-aminopropanoate)

N-Acetyl-D-cysteine

CAT No: CL-ALC-17 CAS No: 26117-28-2 Mol Wt: 163.2 Mol F: C5H9NO3S Inv Status: Custom Synthesis

Chemical Name: Acetyl-D-cysteine

N-Acetyl-L-cystine

CAT No: CL-ALC-18 CAS No: 25779-79-7 Mol Wt: 282.3 Mol F: C8H14N2O5S2 Inv Status: Custom Synthesis

Chemical Name: N-acetyl-S-(((R)-2-amino-2-carboxyethyl)thio)-L-cysteine

S-(thiazol-2-yl)-L-cysteine

CAT No: CL-ALC-19 CAS No: 405150-20-1 Mol Wt: 204.3 Mol F: C6H8N2O2S2 Inv Status: Custom Synthesis

Chemical Name: S-(thiazol-2-yl)-L-cysteine

Acetylcysteine Manitol Impurity

CAT No: CL-ALC-20 CAS No: NA Mol Wt: 327.3 Mol F: C11H21NO8S Inv Status: Custom Synthesis

Chemical Name: (2R,3R,4R,5R)-2,3,4,5,6-pentahydroxyhexyl acetyl-L-cysteinate

N,N'-Diacetyl-L-lanthionine

CAT No: CL-ALC-21 CAS No: NA Mol Wt: 292.3 Mol F: C10H16N2O6S Inv Status: Custom Synthesis

Chemical Name: S-((R)-2-acetamido-2-carboxyethyl)-N-acetyl-D-cysteine

Acetylcysteine-D3

CAT No: CL-ALC-22 CAS No: 131685-11-5 Mol Wt: 166.2 Mol F: C5H6D3NO3S Inv Status: Custom Synthesis

Chemical Name: (Acetyl-d3)-L-cysteine

N-(Scetyl-d3)-S-trityl-L-cysteine

CAT No: CL-ALC-23 CAS No: 1515267-89-6 Mol Wt: 408.5 Mol F: C24H20D3NO3S Inv Status: Custom Synthesis

Chemical Name: N-(Scetyl-d3)-S-trityl-L-cysteine

Type:Impurity Reference Standard

API NAME:Acetylcysteine

Total Products: 23

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