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Pharmaceutical Reference Standards

Acetazolamide

Picture of Acetazolamide
CAT No: SZ-A047001
CAS No: 59-66-5
Mol.F. : C4H6N4O3S2
Mol.Wt. : 222.2
Inv. Status: Custom Synthesis
Rel. CAS No : 1424-27-7 (Na salt) ; 106871-59-4 (K salt) ; 928670-12-6 (HCl salt) ; 14116-22-4 (Sulfate salt)
SZ-A047001
CAS No:59-66-5
Mol.F.: C4H6N4O3S2
Mol.Wt.: 222.2
Inv. Status: Custom Synthesis
Rel. CAS No : 1424-27-7 (Na salt) ; 106871-59-4 (K salt) ; 928670-12-6 (HCl salt) ; 14116-22-4 (Sulfate salt)

Acetazolamide EP Impurity A

Picture of Acetazolamide EP Impurity A
CAT No: SZ-A047002
CAS No: 60320-32-3
Mol.F. : C4H4ClN3OS
Mol.Wt. : 177.6
Inv. Status: In Stock
SZ-A047002
CAS No:60320-32-3
Mol.F.: C4H4ClN3OS 
Mol.Wt.: 177.6
Inv. Status: In Stock

Acetazolamide EP Impurity B

Picture of Acetazolamide EP Impurity B
CAT No: SZ-A047003
CAS No: 5393-55-5
Mol.F. : C4H5N3OS
Mol.Wt. : 143.1
Inv. Status: Limited Stock
Rel. CAS No : 53456-75-0 (Na salt)
SZ-A047003
CAS No:5393-55-5
Mol.F.: C4H5N3OS 
Mol.Wt.: 143.1
Inv. Status: Limited Stock
Rel. CAS No : 53456-75-0 (Na salt)

Acetazolamide EP Impurity C

Picture of Acetazolamide EP Impurity C
CAT No: SZ-A047004
CAS No: 32873-56-6
Mol.F. : C4H5N3OS2
Mol.Wt. : 175.2
Inv. Status: In Stock
Rel. CAS No : 53689-72-8 (Na salt)
SZ-A047004
CAS No:32873-56-6
Mol.F.: C4H5N3OS2 
Mol.Wt.: 175.2
Inv. Status: In Stock
Rel. CAS No : 53689-72-8 (Na salt)

Acetazolamide EP Impurity D

Picture of Acetazolamide EP Impurity D
CAT No: SZ-A047005
CAS No: 14949-00-9
Mol.F. : C2H4N4O2S2
Mol.Wt. : 180.2
Inv. Status: In Stock
Rel. CAS No : 72296-05-0 (Na salt) ; 120208-98-2 (HCl salt)
SZ-A047005
CAS No:14949-00-9
Mol.F.: C2H4N4O2S2 
Mol.Wt.: 180.2
Inv. Status: In Stock
Rel. CAS No : 72296-05-0 (Na salt) ; 120208-98-2 (HCl salt)

Acetazolamide EP Impurity E

Picture of Acetazolamide EP Impurity E
CAT No: SZ-A047006
CAS No: 827026-60-8
Mol.F. : C4H5N3O4S2
Mol.Wt. : 223.2
Inv. Status: In Stock
Rel. CAS No : 2469006-67-3 (K salt)
SZ-A047006
CAS No:827026-60-8
Mol.F.: C4H5N3O4S2 
Mol.Wt.: 223.2
Inv. Status: In Stock
Rel. CAS No : 2469006-67-3 (K salt)

Acetazolamide EP Impurity F

Picture of Acetazolamide EP Impurity F
CAT No: SZ-A047007
CAS No: 80495-47-2
Mol.F. : C8H9N7O6S4
Mol.Wt. : 427.4
Inv. Status: Out of Stock, Under Synthesis
SZ-A047007
CAS No:80495-47-2
Mol.F.: C8H9N7O6S4 
Mol.Wt.: 427.4
Inv. Status: Out of Stock, Under Synthesis

Acetazolamide EP Impurity G

Picture of Acetazolamide EP Impurity G
CAT No: SZ-A047008
CAS No: 2349-67-9
Mol.F. : C2H3N3S2
Mol.Wt. : 133.1
Inv. Status: In Stock
Rel. CAS No : 38400-72-5 (Na salt) ; 55774-35-1 (K salt) ; 59909-21-6 (HCl salt)
SZ-A047008
CAS No:2349-67-9
Mol.F.: C2H3N3S2 
Mol.Wt.: 133.1
Inv. Status: In Stock
Rel. CAS No : 38400-72-5 (Na salt) ; 55774-35-1 (K salt) ; 59909-21-6 (HCl salt)

Acetazolamide Impurity 1

Picture of Acetazolamide Impurity 1
CAT No: SZ-A047009
CAS No: NA
Mol.F. : C8H9N7O4S3
Mol.Wt. : 363.4
Inv. Status: Custom Synthesis
SZ-A047009
CAS No:NA
Mol.F.: C8H9N7O4S3 
Mol.Wt.: 363.4
Inv. Status: Custom Synthesis

Acetazolamide Disulphide Impurity

Picture of Acetazolamide Disulphide Impurity
CAT No: SZ-A047010
CAS No: 99055-56-8
Mol.F. : C8H8N6O2S4
Mol.Wt. : 348.4
Inv. Status: In Stock
SZ-A047010
CAS No:99055-56-8
Mol.F.: C8H8N6O2S4 
Mol.Wt.: 348.4
Inv. Status: In Stock

Acetazolamide Impurity 2

Picture of Acetazolamide Impurity 2
CAT No: SZ-A047012
CAS No: 50608-12-3
Mol.F. : C7H13N3S
Mol.Wt. : 171.3
Inv. Status: In Stock
SZ-A047012
CAS No:50608-12-3
Mol.F.: C7H13N3S
Mol.Wt.: 171.3
Inv. Status: In Stock

Stable Isotopes and Metabolites

Acetazolamide D3

Picture of Acetazolamide D3
CAT No: SZ-A047D01
CAS No: 1189904-01-5
Mol.F. : C4H3D3N4O3S2
Mol.Wt. : 225.2
Inv. Status: In Stock
SZ-A047D01
CAS No:1189904-01-5
Mol.F.: C4H3D3N4O3S2
Mol.Wt.: 225.2
Inv. Status: In Stock

N-1,3,4-Thiadiazol-2-ylacetamide D3

Picture of N-1,3,4-Thiadiazol-2-ylacetamide D3
CAT No: SZ-A047D02
CAS No: NA
Mol.F. : C4H2D3N3OS
Mol.Wt. : 146.1
Inv. Status: Custom Synthesis
Rel. CAS No : 5393-55-5 (Unlabeled)
SZ-A047D02
CAS No:NA
Mol.F.: C4H2D3N3OS
Mol.Wt.: 146.1
Inv. Status: Custom Synthesis
Rel. CAS No : 5393-55-5 (Unlabeled)

2-Acetamido-5-Mercapto-1,3,4-Thiadiazole D3

Picture of 2-Acetamido-5-Mercapto-1,3,4-Thiadiazole D3
CAT No: SZ-A047D03
CAS No: 1246816-83-0
Mol.F. : C4H2D3N3OS2
Mol.Wt. : 178.2
Inv. Status: Custom Synthesis
SZ-A047D03
CAS No:1246816-83-0
Mol.F.: C4H2D3N3OS2
Mol.Wt.: 178.2
Inv. Status: Custom Synthesis

N-(5-Chloro-1,3,4-Thiadiazol-2-yl)acetamide D3

Picture of N-(5-Chloro-1,3,4-Thiadiazol-2-yl)acetamide D3
CAT No: SZ-A047D04
CAS No: NA
Mol.F. : C4HD3ClN3OS
Mol.Wt. : 180.7
Inv. Status: Custom Synthesis
Rel. CAS No : 60320-32-3 (Unlabeled)
SZ-A047D04
CAS No:NA
Mol.F.: C4HD3ClN3OS
Mol.Wt.: 180.7
Inv. Status: Custom Synthesis
Rel. CAS No : 60320-32-3 (Unlabeled)

Possible Nitroso Standards

Acetazolamide N-Nitroso Impurity

Picture of Acetazolamide N-Nitroso Impurity
CAT No: SZ-A047011
CAS No: NA
Mol.F. : C4H5N5O4S2
Mol.Wt. : 251.2
Inv. Status: Custom Synthesis
SZ-A047011
CAS No:NA
Mol.F.: C4H5N5O4S2
Mol.Wt.: 251.2
Inv. Status: Custom Synthesis