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Pharmaceutical Reference Standards

Acetylcysteine

Picture of Acetylcysteine
CAT No: SZ-A016001
CAS No: 616-91-1
Mol.F. : C5H9NO3S
Mol.Wt. : 163.2
Inv. Status: In Stock
Rel. CAS No : 19542-74-6 (Na salt) ; 18829-79-3 (HCl salt) ; 1202024-59-6 (HBr salt)
SZ-A016001
CAS No:616-91-1
Mol.F.: C5H9NO3S
Mol.Wt.: 163.2
Inv. Status: In Stock
Rel. CAS No : 19542-74-6 (Na salt) ; 18829-79-3 (HCl salt) ; 1202024-59-6 (HBr salt)

Acetylcysteine EP Impurity A

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CAT No: SZ-A016002
CAS No: 56-89-3
Mol.F. : C6H12N2O4S2
Mol.Wt. : 240.3
Inv. Status: In Stock
Rel. CAS No : 16079-53-1 (Na salt) ; 438633-05-7 (HCl salt) ; 909271-40-5 (HBr salt)
SZ-A016002
CAS No:56-89-3
Mol.F.: C6H12N2O4S2
Mol.Wt.: 240.3
Inv. Status: In Stock
Rel. CAS No : 16079-53-1 (Na salt) ; 438633-05-7 (HCl salt) ; 909271-40-5 (HBr salt)

Acetylcysteine EP Impurity B Hydrochloride

Picture of Acetylcysteine EP Impurity B Hydrochloride
CAT No: SZ-A016003
CAS No: 52-89-1
Mol.F. : C3H7NO2S : HCl
Mol.Wt. : 121.2 : 36.5
Inv. Status: In Stock
Rel. CAS No : 44521-10-0 (Na salt) ; 52-90-4 (free base) ; 659719-78-5 (K salt) ; 82650-08-6 (HBr salt)
SZ-A016003
CAS No:52-89-1
Mol.F.: C3H7NO2S : HCl
Mol.Wt.: 121.2 : 36.5
Inv. Status: In Stock
Rel. CAS No : 44521-10-0 (Na salt) ; 52-90-4 (free base) ; 659719-78-5 (K salt) ; 82650-08-6 (HBr salt)

Acetylcysteine EP Impurity C

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CAT No: SZ-A016004
CAS No: 5545-17-5
Mol.F. : C10H16N2O6S2
Mol.Wt. : 324.4
Inv. Status: In Stock
Rel. CAS No : 1376779-04-2 (Disodium salt)
SZ-A016004
CAS No:5545-17-5
Mol.F.: C10H16N2O6S2
Mol.Wt.: 324.4
Inv. Status: In Stock
Rel. CAS No : 1376779-04-2 (Disodium salt)

Acetylcysteine EP Impurity D

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CAT No: SZ-A016005
CAS No: 18725-37-6
Mol.F. : C7H11NO4S
Mol.Wt. : 205.2
Inv. Status: In Stock
SZ-A016005
CAS No:18725-37-6
Mol.F.: C7H11NO4S
Mol.Wt.: 205.2
Inv. Status: In Stock

Acetylcysteine Impurity 1

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CAT No: SZ-A016006
CAS No: 15058-19-2
Mol.F. : C5H7NO2S : Na
Mol.Wt. : 145.2 : 23.0
Inv. Status: Discontinued
Rel. CAS No : 84184-18-9 (Free base)
SZ-A016006
CAS No:15058-19-2
Mol.F.: C5H7NO2S : Na
Mol.Wt.: 145.2 : 23.0
Inv. Status: Discontinued
Rel. CAS No : 84184-18-9 (Free base)

L-Cysteic Acid

Picture of L-Cysteic Acid
CAT No: SZ-A016007
CAS No: 498-40-8
Mol.F. : C3H7NO5S
Mol.Wt. : 169.2
Inv. Status: Custom Synthesis
Rel. CAS No : 5002-61-9 (Na salt) ; 71400-76-5 (K salt) ; 74562-84-8 (HBr salt)
SZ-A016007
CAS No:498-40-8
Mol.F.: C3H7NO5S
Mol.Wt.: 169.2
Inv. Status: Custom Synthesis
Rel. CAS No : 5002-61-9 (Na salt) ; 71400-76-5 (K salt) ; 74562-84-8 (HBr salt)

Acetylcysteine Impurity 2

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CAT No: SZ-A016008
CAS No: NA
Mol.F. : C9H19NO4S
Mol.Wt. : 237.3
Inv. Status: Custom Synthesis
SZ-A016008
CAS No:NA
Mol.F.: C9H19NO4S
Mol.Wt.: 237.3
Inv. Status: Custom Synthesis

Acetylcysteine Impurity 3

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CAT No: SZ-A016009
CAS No: 282727-77-9
Mol.F. : C5H9NO5S
Mol.Wt. : 195.2
Inv. Status: Custom Synthesis
SZ-A016009
CAS No:282727-77-9
Mol.F.: C5H9NO5S
Mol.Wt.: 195.2
Inv. Status: Custom Synthesis

Acetylcysteine Impurity 4

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CAT No: SZ-A016025
CAS No: 7280-90-2
Mol.F. : C8H13NO4S
Mol.Wt. : 219.3
Inv. Status: In Stock
SZ-A016025
CAS No:7280-90-2
Mol.F.: C8H13NO4S
Mol.Wt.: 219.3
Inv. Status: In Stock

Acetylcysteine Impurity 5

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CAT No: SZ-A016026
CAS No: 140226-30-8
Mol.F. : C8H13NO4S
Mol.Wt. : 219.3
Inv. Status: Custom Synthesis
SZ-A016026
CAS No:140226-30-8
Mol.F.: C8H13NO4S
Mol.Wt.: 219.3
Inv. Status: Custom Synthesis

Acetylcysteine Impurity 6

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CAT No: SZ-A016028
CAS No: NA
Mol.F. : C5H9NO3S
Mol.Wt. : 163.2
Inv. Status: Custom Synthesis
SZ-A016028
CAS No:NA
Mol.F.: C5H9NO3S
Mol.Wt.: 163.2
Inv. Status: Custom Synthesis

N-Acetyl-L-cystine

Picture of N-Acetyl-L-cystine
CAT No: SZ-A016029
CAS No: 25779-79-7
Mol.F. : C8H14N2O5S2
Mol.Wt. : 282.3
Inv. Status: Custom Synthesis
SZ-A016029
CAS No:25779-79-7
Mol.F.: C8H14N2O5S2
Mol.Wt.: 282.3
Inv. Status: Custom Synthesis

L-Cystine Dimethyl Ester

Picture of L-Cystine Dimethyl Ester
CAT No: SZ-A016030
CAS No: 1069-29-0
Mol.F. : C8H16N2O4S2
Mol.Wt. : 268.3
Inv. Status: Custom Synthesis
Rel. CAS No : 32854-09-4 (2HCl salt)
SZ-A016030
CAS No:1069-29-0
Mol.F.: C8H16N2O4S2
Mol.Wt.: 268.3
Inv. Status: Custom Synthesis
Rel. CAS No : 32854-09-4 (2HCl salt)

N-Acetyl-D-cysteine

Picture of N-Acetyl-D-cysteine
CAT No: SZ-A016031
CAS No: 26117-28-2
Mol.F. : C5H9NO3S
Mol.Wt. : 163.2
Inv. Status: Custom Synthesis
SZ-A016031
CAS No:26117-28-2
Mol.F.: C5H9NO3S
Mol.Wt.: 163.2
Inv. Status: Custom Synthesis

Possible Nitroso Standards

N-Nitroso Acetylcysteine

Picture of N-Nitroso Acetylcysteine
CAT No: SZ-A016027
CAS No: NA
Mol.F. : C5H8N2O4S
Mol.Wt. : 192.2
Inv. Status: Custom Synthesis
SZ-A016027
CAS No:NA
Mol.F.: C5H8N2O4S
Mol.Wt.: 192.2
Inv. Status: Custom Synthesis

Stable Isotopes and Metabolites

Acetylcysteine-d3

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CAT No: SZ-A016D01
CAS No: 131685-11-5
Mol.F. : C5H6D3NO3S
Mol.Wt. : 166.2
Inv. Status: In Stock
SZ-A016D01
CAS No:131685-11-5
Mol.F.: C5H6D3NO3S
Mol.Wt.: 166.2
Inv. Status: In Stock

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

Picture of N-(Scetyl-d3)-S-trityl-L-cysteine
CAT No: SZ-A016D02
CAS No: 1515267-89-6
Mol.F. : C24H20D3NO3S
Mol.Wt. : 408.5
Inv. Status: In Stock
SZ-A016D02
CAS No:1515267-89-6
Mol.F.: C24H20D3NO3S
Mol.Wt.: 408.5
Inv. Status: In Stock