Nitrosamines & NDSRI - Products

N-Nitroso Allopurinol

CAT No: CL-ALP-NO-01 CAS No: NA Mol Wt: 165.11 Mol F: C5H3N5O2 Inv Status: Justification

Chemical Name: 1-nitroso-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one

N-Nitroso Allopurinol Impurity A

CAT No: CL-ALP-NO-02 CAS No: NA Mol Wt: 155.12 Mol F: C4H5N5O2 Inv Status: Justification

Chemical Name: 5-amino-1-nitroso-1H-pyrazole-4-carboxamide

N-Nitroso Allopurinol Impurity C

CAT No: CL-ALP-NO-05 CAS No: NA Mol Wt: 207.15 Mol F: C6H5N7O2 Inv Status: Custom Synthesis

Chemical Name: 1-Nitroso-5-(4H-1,2,4-triazol-4-yl)-1H-pyrazole-4-carboxamide

N-Nitroso Allopurinol Impurity D

CAT No: CL-ALP-NO-06 CAS No: NA Mol Wt: 184.16 Mol F: C6H8N4O3 Inv Status: Custom Synthesis

Chemical Name: Ethyl 5-amino-1-nitroso-1H-pyrazole-4-carboxylate

N-Nitroso Allopurinol Impurity E

CAT No: CL-ALP-NO-07 CAS No: NA Mol Wt: 212.17 Mol F: C7H8N4O4 Inv Status: Custom Synthesis

Chemical Name: Ethyl 5-formamido-1-nitroso-1H-pyrazole-4-carboxylate

N-Nitroso Allopurinol Impurity F

CAT No: CL-ALP-NO-08 CAS No: NA Mol Wt: 307.27 Mol F: C12H13N5O5 Inv Status: Custom Synthesis

Chemical Name: Ethyl (E)-3-((2-cyano-3-ethoxy-3-oxoprop-1-en-1-yl)amino)-1-nitroso-1H-pyrazole-4-carboxylate

N-Nitroso Allopurinol Impurity 1

CAT No: CL-ALP-NO-09 CAS No: NA Mol Wt: 249.19 Mol F: C8H7N7O3 Inv Status: Custom Synthesis

Chemical Name: (E)-3-((3-amino-2-cyano-3-oxoprop-1-en-1-yl)amino)-1-nitroso-1H-pyrazole-4-carboxamide

N-Nitroso Allopurinol Impurity 2

CAT No: CL-ALP-NO-10 CAS No: NA Mol Wt: 249.19 Mol F: C8H7N7O3 Inv Status: Custom Synthesis

Chemical Name: (E)-3-((3-amino-2-cyano-3-oxoprop-1-en-1-yl)(nitroso)amino)-1H-pyrazole-4-carboxamide

N-Nitroso Allopurinol Impurity B

CAT No: CL-ALP-NO-11 CAS No: NA Mol Wt: 183.13 Mol F: C5H5N5O3 Inv Status: Custom Synthesis

Chemical Name: 5-Formamido-1-nitroso-1H-pyrazole-4-carboxamide