N-Nitroso Cimetidine;73785-40-7
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WhatsAPP: +86 17386083646
E-mail: anna@molcoo.com
Product Code：C103010
English Name：N-Nitroso Cimetidine
English Alias：(Z)-2-cyano-1-methyl-3-(2-(((5-methyl-1H-imidazol-4-yl)methyl)thio)ethyl)-1-nitrosoguanidine
CAS No.：73785-40-7
Molecular Formula：C₁₀H₁₅N₇OS
Molecular Weight：281.34
High-Purity Reference Standard：Confirmed by HPLC (≥99.0%), NMR (1H, 13C), HRMS, and elemental analysis, suitable for Cimetidine nitroso impurity analysis and quality control.
Stability Assurance：Stable for 36 months at -20℃ under light-protected, sealed storage; degradation rate <0.3% in methanol-water mixture within 6 months.
Quality Control Testing：Used for UPLC-MS/MS detection of N-nitroso impurities in Cimetidine API and formulations, controlling content to meet ICH Q3A standards (single impurity limit ≤0.1%).
Process Optimization Research：Monitors nitroso impurity formation during Cimetidine synthesis, reducing generation by >40% by adjusting reaction system pH (e.g., neutral to weakly alkaline) and temperature (≤30℃).
Method Validation：Serves as a standard for developing nitroso impurity detection methods, verifying UPLC resolution (≥3.0) and LOD (0.01 ng/mL).
Cimetidine, an H2 receptor antagonist, is used for treating gastric ulcers and hyperacidity by inhibiting gastric acid secretion. N-Nitroso Cimetidine, a potential genotoxic impurity (GTI), may originate from side reactions between amine compounds and nitrosating agents during production. Nitroso compounds have potential carcinogenicity, and their nitrosamide groups and imidazole rings may enhance interaction with DNA, making control of this impurity critical for drug safety.
Detection Technology：UPLC-MS/MS with C18 column (1.7μm) and 0.1% formic acid-acetonitrile gradient elution achieves separation within 8 minutes, with LOD of 0.002 ng/mL for trace analysis of genotoxic impurities.
Formation Mechanism：Formed by reaction of Cimetidine's guanidine group with nitrite under acidic conditions (e.g., pH <4); optimizing nitrosating agent residue control and post-reaction processing inhibits formation.
Safety Evaluation：In vitro Ames test shows potential mutagenicity, and in vivo rat model tests demonstrate DNA adduct formation in gastric mucosa at a 5 mg/kg dose. Accelerated stability and forced degradation tests are ongoing to systematically study degradation pathways and mutagenic risks under light, heat, and oxidation conditions.
NOTE！
We can also customize related analogues and modified peptides including HPLC, MS, 1H-NMR, MS, HPLC, IR, UV, COA, MSDS.
This product is intended for laboratory use only!
WhatsAPP: +86 17386083646
E-mail: anna@molcoo.com
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