We are thrilled to announce that the highly anticipated N-Nitroso impurities of Amide and Indole have now been successfully developed e.g. N-Nitroso Orlistat , N-Nitroso Ropinirole , N-Nitroso Caprolactam ,N-Nitroso Gabapentin EP Impurity A , N-Nitroso Rizatriptan , N-Nitroso Zolmitriptan, N-Nitroso Naratriptan , N-Nitroso Tadalafil , N-Nitroso Eletriptan etc. are ready Stock
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We are thrilled to announce that the highly anticipated N-Nitroso impurities of Amide and Indole have now been successfully developed e.g. N-Nitroso Orlistat , N-Nitroso Ropinirole , N-Nitroso Caprolactam ,N-Nitroso Gabapentin EP Impurity A , N-Nitroso Rizatriptan , N-Nitroso Zolmitriptan, N-Nitroso Naratriptan , N-Nitroso Tadalafil , N-Nitroso Eletriptan etc. are ready Stock

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Nitroso

Nitrosamines are a group of chemical compounds that contain the nitroso functional group (NO) attached to an amine group (-NH). They can form in various ways, including through industrial processes, combustion, and certain chemical reactions, particularly involving nitrites and secondary amines. Nitrosamines are of concern because Many nitrosamines (N-Nitrosamines) are potent genotoxins; some have been classified as possible human carcinogens, although the degree of risk can vary depending on factors such as the amount of exposure and individual susceptibility. Synchemia Research Chemical is dedicated to thoroughly investigating the formation of nitroso impurities in APIs, including those related to the manufacturing processes. This approach indicates a proactive stance toward quality control and regulatory compliance. By exploring all potential sources of nitroso impurities, including those arising from the production processes themselves, Synchemia Research Chemical demonstrates a commitment to ensuring the purity, safety, and efficacy of their pharmaceutical products. Nitrosoamines, including N-Des-methyl Nitroso impurities, are important in pharmaceutical research and development due to their potential impact on drug safety and efficacy. Understanding and controlling the presence of these impurities is crucial for ensuring the quality and safety of pharmaceutical products. Can N-Nitrosamines exist in two different stable forms? N-nitrosamines substituted with two different alkyl groups can exist in two different stable forms distinguishable by several analytical methods. The two rotamers may differ in their overall dipole moment and therefore may posses different chemical and physical properties. Why do I see two peaks when analyzing N-Nitrosamines by HPLC or GC? HPLC and GC)analysis of N-nitrosamines may show two rotamers of the N-nitrosamine as two separate peaks. Whether two peaks are observed depends on the structure of the N-nitrosamine (i.e., symmetric vs. asymmetric) as well as the separation power of the analytical method.
We are the Synchemia Research Chemical specializes in manufacturing and exporting various nitrosoamine compounds, particularly focusing on N-Des-methyl Nitroso impurities of various APIs and nitroso compounds of direct APIs that contain secondary amines. By specializing in the synthesis and export of these compounds, Synchemia Research likely plays a significant role in supporting the pharmaceutical industry's efforts to meet regulatory requirements and ensure the highest standards of quality and safety in drug manufacturing.
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Pharmaceutical Reference Standards

Methotrexate diethyl ester Nitroso Impurity
Methotrexate diethyl ester Nitroso Impurity
CAT No SRC-N0141206
CAS No NA
Mol.F. C24H29N9O6
Mol.Wt. 539.6
INV STATUS CUSTOM SYNTHESIS
Methotrexate Nitroso Impurity 1
Methotrexate Nitroso Impurity 1
CAT No SRC-N0141207
CAS No NA
Mol.F. C21H21N9O6 : 2(Na)
Mol.Wt. 495.5 : 2(23.0)
INV STATUS CUSTOM SYNTHESIS
Methotrexate Nitroso Impurity 4
Methotrexate Nitroso Impurity 4
CAT No SRC-N0141208
CAS No NA
Mol.F. C17H23N3O6
Mol.Wt. 365.4
INV STATUS CUSTOM SYNTHESIS
Methotrexate Nitroso Impurity 5
Methotrexate Nitroso Impurity 5
CAT No SRC-N0141209
CAS No NA
Mol.F. C17H22N4O7
Mol.Wt. 394.4
INV STATUS CUSTOM SYNTHESIS
N,N-Dinitroso Methotrexate EP Impurity L
N,N-Dinitroso Methotrexate EP Impurity L
CAT No SRC-N0141210
CAS No NA
Mol.F. C13H14N4O7
Mol.Wt. 338.3
INV STATUS CUSTOM SYNTHESIS
N-Nitroso Methotrexate
N-Nitroso Methotrexate
CAT No SRC-N0141211
CAS No NA
Mol.F. C20H21N9O6
Mol.Wt. 483.4
INV STATUS IN STOCK
N-Nitroso Methotrexate EP Impurity F
N-Nitroso Methotrexate EP Impurity F
CAT No SRC-N0141212
CAS No NA
Mol.F. C20H21N9O6
Mol.Wt. 483.4
INV STATUS CUSTOM SYNTHESIS
N-Nitroso Alverine EP Impurity C
N-Nitroso Alverine EP Impurity C
CAT No SRC-N0141213
CAS No NA
Mol.F. C11H16N2O
Mol.Wt. 192.3 g/mol
INV STATUS IN STOCK
N-Nitroso N-Desethyl Alverine
N-Nitroso N-Desethyl Alverine
CAT No SRC-N0141214
CAS No 871884-77-4
Mol.F. C18H22N2O
Mol.Wt. 282.4 g/mol
INV STATUS IN STOCK
Baricitinib Nitroso Impurity 2
Baricitinib Nitroso Impurity 2
CAT No SRC-N0141215
CAS No NA
Mol.F. C6H3ClN4O
Mol.Wt. 182.6
INV STATUS CUSTOM SYNTHESIS

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