News
Latest news, technical insights and industry updates from CATO — 116 articles.
From EP impurities to nitrosamines-Tadalafil-Tadalafil-Comprehensive analysis of impurity control and standard requirements
Tadalafil is a PDE5 inhibitor originally developed by Eli Lilly. It is mainly used to treat male erectile dysfunction (ED). The official domestic trad…
2026 Chemical Reference Standard Purchasing Guide
📖 Overview A systematic reference standard purchasing methodology for pharmaceutical QC departments, CROs, third-party testing organizations, and acad…
Digital Strength and AI Compliance: Guangzhou CATO Technology Wins DCMM Certification and Intelligent Customer Service Algorithm Filing
Guangzhou CATO Technology Co., Ltd. (CATO) has recently reported a string of good news: it has officially passed the national standard DCMM (Data Mana…
From EP Impurities to Nitrosamines: A Complete Analysis of Tadalafil Impurity Control and Reference Standard Requirements
Tadalafil is a PDE5 inhibitor originally developed by Eli Lilly, mainly used to treat male erectile dysfunction (ED), with the official Chinese trade …
Feed Additive New Regulation Explained: Latest Changes in GB 7300 Parts 1 & 2, with CATO Reference Standard Solutions
As the livestock and feed processing industries transition toward high-quality development, the quality standards and testing supervision of feed addi…
Carbocisteine Quality Study: Impurity Sources, Sulfoxidation Metabolism, and Reference Standard Selection
1. Mechanistic Differences Determined by Structure Carbocisteine is a mature product in the Chinese respiratory field, but its market base does not ma…
Bullfrog Antibiotic Exceedance Tops Trending Searches: What Hidden Risks Lie Behind 'One Set for Testing, Another for Sale'? How Can Food Safety Testing Find a Way Out?
On August 3, multiple topics about "bullfrog antibiotic exceedance" successively topped the trending searches on social platforms, triggering strong p…
N-Acetylcysteine: The Four EP Specified Impurities, Their Sources, and Analytical Methods Explained
N-Acetylcysteine (NAC) is probably one of the most easily "underestimated" old drugs. This expectorant, which entered clinical use in the mid-1960s, i…
Toy "Dual Standards" Officially Land! GB 6675.1 and GB/T 46509-2025 Join Forces — Are Your Testing Reference Standards Ready?
In recent years, the "invisible killer" in children's toys (such as floor mats, plastic toys, and wooden toys) — volatile organic compound (VOC) emiss…
Lidocaine Impurity Profile: Genotoxic Aniline Impurity and NDSRI Risk Under Control
Lidocaine's structure carries two regulatory hot spots: a genotoxic aniline impurity and NDSRI nitrosamine risk. See the full impurity control breakdo…
Ezetimibe Impurity Profile: The Analytical Chemistry Challenges Behind Three Chiral Centers
A lipid-lowering drug targeting the intestine Ezetimibe was approved by the FDA in 2002 (trade name Zetia) and is the first lipid-modifying drug that …
CATO Research Chemicals Celebrates Topping-Out of New Global Headquarters
On June 30, the primary structure of the new global headquarters of CATO Research Chemicals (Guangzhou CATO Research Chemicals Co., Ltd.) officially r…
Behind the Diaper "Formamide Storm": Why Do Test Results "Conflict"? How Precision Testing Protects the Safety Bottom Line for Mother-and-Baby Products
In recent days, many friends in testing, raw materials, and mother-and-baby businesses must have been flooded with this word: formamide . On June 18, …
2026 Edition China RoHS Rollout | Has Your Lab Stocked the 10 Categories of Restricted Substance Reference Standards?
On June 3, 2026, the Ministry of Industry and Information Technology held a publicity and interpretation meeting in Beijing on the 2026 edition of Chi…
4-Aminophenol (EP Impurity K) in Paracetamol: Toxicological Mechanism, Pharmacopoeial Limits, and Quality Control Solutions
Paracetamol (CAS 103-90-2) is the world's most widely used OTC antipyretic analgesic. Its key process impurity, 4-aminophenol (4-Aminophenol, EP Impur…
Focus on the Hong Kong Recall of Jinlingguan Milk Powder: Revealing the Detection Truth Behind "Bacillus cereus Emetic Toxin"
On May 31, a sampling notice issued by the Centre for Food Safety of the Hong Kong Food and Environmental Hygiene Department once again pushed the mic…
Major Breakthrough in Treating the "King of Cancers"! Daraxonrasib Reshapes the Pancreatic Cancer Landscape — Is the RAS R&D Track Ready?
Daraxonrasib (development code RMC-6236) is an orally active, non-covalent RAS(ON) inhibitor developed by Revolution Medicines, and an investigational…
Impurity Reference Standard Selection in Finerenone Generic Filings: Identification and Control of the R-Configuration Enantiomer and Degradation Impurities
Finerenone (trade name Kerendia®) is a non-steroidal mineralocorticoid receptor antagonist (MRA) developed by Bayer, approved in China in 2022 for adu…
CCTV Exposé: Just a Few Cents, Fragrance Mixed with Water? Your "Pure Botanical" Mosquito Repellent May Hide Pesticides!
In the sweltering summer, besides the heat, the most annoying thing is the ubiquitous mosquitoes. To ward off mosquitoes, all kinds of "viral" mosquit…
Metformin Hydrochloride Nitrosamine Testing Handbook: Selection Logic for NDMA, NDSRI and EP Impurity Reference Standards
Metformin hydrochloride (CAS 1115-70-4) is one of the most widely used oral antidiabetic drugs in the world. In December 2019, the Singapore Health Sc…