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Pharmaceutical Reference Standards

Allopurinol

Picture of Allopurinol
CAT No: SZ-A074001
CAS No: 315-30-0
Mol.F. : C5H4N4O
Mol.Wt. : 136.1
Inv. Status: In Stock
Rel. CAS No : 14806-02-1 (HCl salt) ; 17795-21-0 (Na salt) ; 2415333-71-8 (Sulfate salt)
SZ-A074001
CAS No:315-30-0
Mol.F.: C5H4N4O
Mol.Wt.: 136.1
Inv. Status: In Stock
Rel. CAS No : 14806-02-1 (HCl salt) ; 17795-21-0 (Na salt) ; 2415333-71-8 (Sulfate salt)

Allopurinol EP Impurity A (Sulfate)

Picture of Allopurinol EP Impurity A (Sulfate)
CAT No: SZ-A074002
CAS No: 27511-79-1
Mol.F. : 2(C4H6N4O) : H2O4S
Mol.Wt. : 2(126.1) : 98.1
Inv. Status: In Stock
Rel. CAS No : 5334-31-6 (free base)
SZ-A074002
CAS No:27511-79-1
Mol.F.: 2(C4H6N4O) : H2O4S
Mol.Wt.: 2(126.1) : 98.1
Inv. Status: In Stock
Rel. CAS No : 5334-31-6 (free base)

Allopurinol EP Impurity B

Picture of Allopurinol EP Impurity B
CAT No: SZ-A074003
CAS No: 22407-20-1
Mol.F. : C5H6N4O2
Mol.Wt. : 154.1
Inv. Status: In Stock
SZ-A074003
CAS No:22407-20-1
Mol.F.: C5H6N4O2
Mol.Wt.: 154.1
Inv. Status: In Stock

Allopurinol EP Impurity C

Picture of Allopurinol EP Impurity C
CAT No: SZ-A074004
CAS No: 1346604-13-4
Mol.F. : C6H6N6O
Mol.Wt. : 178.2
Inv. Status: In Stock
SZ-A074004
CAS No:1346604-13-4
Mol.F.: C6H6N6O
Mol.Wt.: 178.2
Inv. Status: In Stock

Allopurinol EP Impurity D

Picture of Allopurinol EP Impurity D
CAT No: SZ-A074005
CAS No: 6994-25-8
Mol.F. : C6H9N3O2
Mol.Wt. : 155.2
Inv. Status: In Stock
SZ-A074005
CAS No:6994-25-8
Mol.F.: C6H9N3O2
Mol.Wt.: 155.2
Inv. Status: In Stock

Allopurinol EP Impurity E

Picture of Allopurinol EP Impurity E
CAT No: SZ-A074006
CAS No: 31055-19-3
Mol.F. : C7H9N3O3
Mol.Wt. : 183.2
Inv. Status: In Stock
SZ-A074006
CAS No:31055-19-3
Mol.F.: C7H9N3O3
Mol.Wt.: 183.2
Inv. Status: In Stock

Allopurinol EP Impurity F

Picture of Allopurinol EP Impurity F
CAT No: SZ-A074007
CAS No: 302-01-2
Mol.F. : H4N2
Mol.Wt. : 32.1
Inv. Status: In Stock, 3-4 days for Dispatch
Rel. CAS No : 2644-70-4 (HCl salt) ; 10034-93-2 (Sulfate salt) ; 13775-80-9 (HBr salt)
SZ-A074007
CAS No:302-01-2
Mol.F.: H4N2
Mol.Wt.: 32.1
Inv. Status: In Stock, 3-4 days for Dispatch
Rel. CAS No : 2644-70-4 (HCl salt) ; 10034-93-2 (Sulfate salt) ; 13775-80-9 (HBr salt)

Allopurinol Nitrile Impurity

Picture of Allopurinol Nitrile Impurity
CAT No: SZ-A074008
CAS No: 16617-46-2
Mol.F. : C4H4N4
Mol.Wt. : 108.1
Inv. Status: Custom Synthesis
Rel. CAS No : 478081-97-9 (HCl salt)
SZ-A074008
CAS No:16617-46-2
Mol.F.: C4H4N4
Mol.Wt.: 108.1
Inv. Status: Custom Synthesis
Rel. CAS No : 478081-97-9 (HCl salt)

Allopurinol USP Impurity

Picture of Allopurinol USP Impurity
CAT No: SZ-A074009
CAS No: NA
Mol.F. : C12H14N4O4
Mol.Wt. : 278.3
Inv. Status: Custom Synthesis
SZ-A074009
CAS No:NA
Mol.F.: C12H14N4O4
Mol.Wt.: 278.3
Inv. Status: Custom Synthesis

Allopurinol Impurity 1

Picture of Allopurinol Impurity 1
CAT No: SZ-A074010
CAS No: NA
Mol.F. : C8H8N6O2
Mol.Wt. : 220.2
Inv. Status: Custom Synthesis
SZ-A074010
CAS No:NA
Mol.F.: C8H8N6O2
Mol.Wt.: 220.2
Inv. Status: Custom Synthesis

Allopurinol USP Related Compound F

Picture of Allopurinol USP Related Compound F
CAT No: SZ-A074011
CAS No: 321571-07-7
Mol.F. : C12H14N4O4
Mol.Wt. : 278.3
Inv. Status: Custom Synthesis
SZ-A074011
CAS No:321571-07-7
Mol.F.: C12H14N4O4
Mol.Wt.: 278.3
Inv. Status: Custom Synthesis

Allopurinol Nitrile Hydrochloride Impurity

Picture of Allopurinol Nitrile Hydrochloride Impurity
CAT No: SZ-A074020
CAS No: 478081-97-9
Mol.F. : C4H4N4 : HCl
Mol.Wt. : 108.1 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 16617-46-2 (free base)
SZ-A074020
CAS No:478081-97-9
Mol.F.: C4H4N4 : HCl
Mol.Wt.: 108.1 : 36.5
Inv. Status: Custom Synthesis
Rel. CAS No : 16617-46-2 (free base)

Stable Isotopes and Metabolites

Allopurinol D2

Picture of Allopurinol D2
CAT No: SZ-A074D01
CAS No: 916979-34-5
Mol.F. : C5H2D2N4O
Mol.Wt. : 138.1
Inv. Status: Custom Synthesis
SZ-A074D01
CAS No:916979-34-5
Mol.F.: C5H2D2N4O
Mol.Wt.: 138.1
Inv. Status: Custom Synthesis

Oxipurinol 13C 15N2

Picture of Oxipurinol 13C 15N2
CAT No: SZ-A074D02
CAS No: 1217036-71-9
Mol.F. : C413CH4N215N2O2
Mol.Wt. : 155.1
Inv. Status: Custom Synthesis
SZ-A074D02
CAS No:1217036-71-9
Mol.F.: C413CH4N215N2O2
Mol.Wt.: 155.1
Inv. Status: Custom Synthesis

Possible Nitroso Standards

Allopurinol Nitroso Impurity 1

Picture of Allopurinol Nitroso Impurity 1
CAT No: SZ-A074012
CAS No: NA
Mol.F. : C5H3N5O2
Mol.Wt. : 165.1
Inv. Status: Under Synthesis
SZ-A074012
CAS No:NA
Mol.F.: C5H3N5O2
Mol.Wt.: 165.1
Inv. Status: Under Synthesis

Allopurinol Nitroso Impurity 2

Picture of Allopurinol Nitroso Impurity 2
CAT No: SZ-A074021
CAS No: NA
Mol.F. : C5H3N5O2
Mol.Wt. : 165.1
Inv. Status: Custom Synthesis
SZ-A074021
CAS No:NA
Mol.F.: C5H3N5O2
Mol.Wt.: 165.1
Inv. Status: Custom Synthesis