Introduction
Chronic diseases represent the largest segment of medication demand: approximately 450 million patients in China live with chronic conditions, which account for 88.5% of total deaths and over 70% of medical expenses. Hypertension, type 2 diabetes, overweight/obesity, and gastroesophageal reflux disease (GERD) are all directions characterized by high patient numbers and long treatment cycles, with medication durations spanning decades or even a lifetime. China has about 245 million hypertension patients and 140 million diabetes patients; the adult prevalence of GERD is approximately 10%. Alongside population aging and rising rates of overweight and obesity, patient numbers in these directions will continue to grow.
Orforglipron (GLP-1 receptor agonist), Empagliflozin (SGLT2 inhibitor), Vonoprazan (potassium-competitive acid blocker, P-CAB), and Felodipipine (calcium channel blocker, CCB) correspond to the chronic disease scenarios mentioned above. They are currently at inflection points driven by centralized procurement implementation, essential medicine list inclusion, and patent expirations. Factors such as growing patient populations, frequent process adjustments, and the emergence of new mechanisms and indications continuously reshape impurity profiles, driving increased demand for traceable impurity reference standards in R&D.
As a professional impurity reference standard supplier deeply rooted in this field, Sinco focuses in this issue on four major chronic disease drug varieties — covering impurity projects related to Orforglipron, Empagliflozin, Vonoprazan, and Felodipine — and provides full sets of compliant spectra to offer traceable reference support for your impurity research.
Star Products of This Issue
GLP-1 RA: Orforglipron Impurities
[Common Challenges] The fused heterocyclic core is structurally complex; multiple chiral centers make isomer separation difficult. The aromatic heterocycle nitrogen can be oxidized under strong oxidative conditions to form N-oxides. The molecule is sensitive to heat and moisture, resulting in numerous degradation products.
[Sinco Provides] 107 related impurity structures covered to date. Full structural elucidation spectra (including COA, NMR, MS, HPLC, etc.) are available to support method development. Complete impurity list: see 【Read More】at the end.
SGLT2i: Empagliflozin Impurities
[Common Challenges] A C-aryl glycoside with a sugar ring containing 4 chiral centers plus an anomeric carbon; epimers and anomers require individual control. The process intermediate and by-product impurity profile is complex.
[Sinco Provides] 184 related impurity structures covered. Full compliant spectra are available to provide compliant reference standard support for impurity quantification. Complete impurity list: see 【Read More】at the end.
P-CAB: Vonoprazan Impurities
[Common Challenges] The secondary amine side chain carries a nitrosation risk (NDSRI class); the pyridine ring nitrogen is readily oxidized to N-oxides.
[Sinco Provides] 162 related impurity structures covered. Full analytical spectra are available to support impurity profile research on nitrosamine toxic impurities. Complete impurity list: see 【Read More】at the end.
CCB: Felodipine Impurities
[Common Challenges] The dihydropyridine ring is extremely photosensitive, readily generating pyridine-type photodegradation impurities under light. The C4 position is a chiral carbon, leading to stereoisomer impurities in the process. The ester group is prone to hydrolysis under acidic/alkaline conditions.
[Sinco Provides] 13 related impurity structures covered, including pharmacopoeial impurities EP Impurity A, B, C, etc. Full authoritative spectra are available to support chiral impurity resolution studies and qualitative/quantitative research. Complete impurity list: see 【Read More】at the end.
Why Choose Sinco?
✅ Compliance Foundation: CQC certification + full structural elucidation spectra, ensuring a complete data chain.
✅ Independent Synthesis: 30,000+ self-developed library; capable of synthesizing high-difficulty custom impurities.
✅ Efficient Delivery: 24-hour response; in-stock items delivered within 2–4 business days; trusted by customers in 40 countries worldwide.