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Latest news, technical insights and industry updates from CATO — 116 articles.
A Complete Guide to GB/T 46928 / 24893 / 21496-2025: Animal and Vegetable Fats and Oils Testing Upgraded to Align with International Standards
On December 31, 2025, a batch of national standards for animal and vegetable fats and oils testing methods was released collectively, and they have be…
The Isomer Challenge of Ursodeoxycholic Acid: From API Impurities to Bioequivalence Analysis
I. What Is Ursodeoxycholic Acid? Where Do Isomeric Impurities Come From? Ursodeoxycholic acid (UDCA) is a natural bile acid found in relatively high a…
One Year of the 2025 Chinese Pharmacopoeia: The "Test Solution / Titrimetric Solution" Changes in the Volume IV General Chapters — Is the QC Lab Transition Smooth?
The 2025 edition of the Chinese Pharmacopoeia (ChP) has been in force since October 1, 2025 [1]. Over the past year, companies have focused mostly on …
Driving Frontier Materials Innovation | CATO Brings Custom Optoelectronic Materials Solutions to the 2026 CPCA Electronic Circuits (Greater Bay Area) Exhibition
From precision lithography in chip manufacturing to near-eye displays in AR glasses and smart dimming in electrochromic devices, every breakthrough in…
GB/T 26635-2025 upgrade, list of animal and vegetable oils and fats "vitamin E" testing standards
" GB/T 26635-2025 has been implemented on July 1, 2026, and measures 8 "tocols". CATO has prepared all the standard materials used for testing accordi…
Representative of fully synthetic fluorocyclines: Eravacycline – Structure, synthesis process, and key points of quality research
Introduction Therapeutic options for multidrug-resistant Gram-negative bacterial infections are becoming increasingly scarce, yet the tetracycline "ol…
Nitrosamine risk assessment of compound amino acid injection: first distinguish which amino acids are really risky
As compound amino acid 18AA-Ⅶ injection enters the 12th batch of national procurement, only products with relevant subtypes that have been evaluated c…
2026 Nobel Prize in Chemistry Awarded to "Left and Right Hands": Why the Same Molecule Has Vastly Different Drug Efficacy
Place your left hand over your right hand with both palms facing down, and you will find that your thumbs are always on opposite sides—the left and ri…
Interpretation of the new national standard for olive oil GB/T 46952-2025: How to identify pomace oil between fatty alcohols and triterpene alcohols
Olive oil is called "liquid gold", and the price difference between grades can reach several times. Passing off inferior products and using olive poma…
Bisoprolol technical analysis: from evidence-based evidence to impurities and nitrosamine risk control
Clinical location and molecular basis bisoprolol It is a highly selective β1-adrenergic receptor blocker. There are noteworthy regulatory differences …
Why does Esomeprazole contain nitrosamine impurities? Secondary amine trap in benzimidazole structure
Key points of this article ① S-enantiomer esomeprazole is the S-enantiomer of omeprazole. It was approved by the FDA on February 20, 2001 (NDA 21-153,…
Eye drop consistency evaluation starts today! These major varieties should be paid special attention to. The full coverage of CATO impurity reference standards can be checked.
Recently, the State Food and Drug Administration issued the "Announcement on Carrying out the Quality and Efficacy Consistency Evaluation of Generic D…
The new national standard for soybean isoflavone testing: GB/T 23788-2026 is officially released. How should laboratories respond?
Key points of this article ① "Determination of soy isoflavones in health foods" (GB/T 23788-2026) has been published It will be released in February 2…
Indapamide: A Technical Review — From Synthetic-Route Impurities to the New Nitrosamine Regulatory Landscape
More Than Just a "Diuretic" Antihypertensive Indapamide (CAS 26807-65-8; molecular formula C16H16ClN3O3S; molecular weight 365.83) is an indoline-base…
The "backside" of aspirin (Acetylsalicylic acid): from molecular mechanism to pharmacopoeial impurity spectrum
From willow bark to aspirin: The birth of acetylation modification Using willow bark to relieve pain and reduce fever is an ancient thing. The real tu…
The new national standard is implemented! GB/T 46742-2025 High-efficiency detection solution for NBPT and DCD in fertilizers. Come and check it now.
With the deepening development of agricultural green transformation and precision fertilization technology, n-Butylphosphorothiotriamide (NBPT) and di…
Overcoming the Three-Disulfide-Bond Purification Barrier: Linaclotide Impurity Profiling and Deficiency Response Strategies
Linaclotide is a peptide drug composed of 14 amino acids. Due to its unique "three pairs of disulfide bonds" structure, it is highly prone to generati…
Impurity spectrum analysis of Tenofovir Disoproxil: selection of seven major categories of impurities and reference substances
A nucleotide drug that changes the antiviral treatment landscape Tenofovir Disoproxil (CAS 201341-05-1) It is a nucleotide reverse transcriptase inhib…
See You in Japan This September | CATO Invites You to JASIS 2026
JASIS 2026 · Chiba, Japan · Makuhari Messe In September, by Tokyo Bay See you at Makuhari CATO Research Chemicals Proudly Debuts Asia's Largest Analyt…
See you in Japan in September | CATO invites you to JASIS 2026
See you in Japan in September | CATO invites you to JASIS 2026 JASIS 2026 · Chiba, Japan · Makuhari Messe See you at Makuhari on the shores of Tokyo B…