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Elevate Your Coffee Polyphenol Research with Isomerically Pure CQA/FQA High-Purity Coffee Chlorogenic Acids

Date：July 15 2026Web Page No：160725

Nagara Science Co.,Ltd.

Chlorogenic acids (CGAs) play a vital role in studying the health benefits and chemical profiles of coffee and other botanicals.　Nagara Science provids a comprehensive portfolio of premium-grade coffee chlorogenic acid isomers—including caffeoylquinic acids (CQAs) and feruloylquinic acids (FQAs)—with guaranteed purities of 98% to 99%.

＊The products are for research use only.

Lineup

Monocaffeoylquinic Acids (CQAs) — Molecular Formula (M.W.) : C16H18O9 (354.31)

Structural isomers with one caffeic acid moiety bound to quinic acid. Naturally isolated from green coffee beans, these compounds are essential reference standards for basic coffee polyphenol profiling and metabolic research.

Structure Product Name
Alternative Name		 CAS No. Size, Code, Purity Key Features & Applications
Structure formula of 3-CQA 3-O-Caffeoylquinic acid
3-CQA
Neochlorogenic acid		 342811-68-1, 906-33-2 5 mg
NS430102
≥ 98%		 ・Early-eluting isomer in reversed-phase HPLC; vital for precise baseline separation.
・Used in neuroprotection research.
Structure formula of 4-CQA 4-O-Caffeoylquinic acid
4-CQA
Cryptochlorogenic acid		 905-99-7, 87099-73-8 5 mg
NS430202
≥ 98%		 ・Highly recognized as a potent ferroptosis inhibitor and cellular protector.
・Serves as a reliable tracking marker for thermal isomerization during coffee roasting.
Structure formula of 5-CQA Chlorogenic acid
5-CQA
5-O-Caffeoylquinic acid		 327-97-9, 202650-88-2 10 mg
NS430302
≥ 99%		 ・The most abundant isomer in green coffee beans; the universal gold standard.
・Primary benchmark for total polyphenol quantification.

Feruloylquinic Acids (FQAs) — Molecular Formula (M.W.) : C17H20O9 (368.34)

Structural isomers with one ferulic acid moiety bound to quinic acid. These compounds serve as critical biomarkers for monitoring coffee roasting degrees, evaluating flavor profiles, and researching vascular health.

Structure Product Name
Abbreviation		 CAS No. Size, Code, Purity Key Features & Applications
Structure formula of 3-FQA 3-O-Feruloylquinic acid
3-FQA		 40242-06-6, 87099-72-7 1 mg
NS430401
≥ 98%		 ・Acts as the primary peak identification standard among FQAs in chromatography.
・Essential biomarker for advanced plant metabolomics.
Structure formula of 4-FQA 4-O-Feruloylquinic acid
4-FQA 		2613-86-7, 96646-16-1 1 mg
NS430501
≥ 98%		 ・Key thermal stability marker used to analyze degradation pathways.
・Ideal probe for studying structural modifications.
Structure formula of 5-CQA 5-O-Feruloylquinic acid
5-FQA 		53905-80-9, 62929-69-5 5 mg
NS430602
≥ 98%		 ・The predominant FQA in coffee beans; critical for flavor profiling.
・Extensively utilized in coffee defect validation.

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Product Information

Monocaffeoylquinic Acids (CQAs)

[Date : July 22 2026 00:11]

Detail Product Name Product Code Supplier Size Price
3-O-Caffeoylquinic acid <Neochlorogenic acid>
 NS430102 NGRNagara Science Co.,Ltd. 5 mg $290

Description Source: Coffee. The Early Eluter. Crucial for establishing precise chromatographic baselines and analyzing positional isomer migration. Purity: ≧98% (HPLC). Molecular Formula: C16H18O9. M.W.: 354.31
Storage -20°C,Dark Storage CAS 342811-68-1, 906-33-2
Link

4-O-Caffeoylquinic acid
 NS430202 NGRNagara Science Co.,Ltd. 5 mg $290

Description Source: Coffee. The Novel Bioactive Tool. Gaining rapid attention as a potent ferroptosis (cell death) inhibitor and structural marker for heat-induced isomerization. Purity: ≧98% (HPLC). Molecular Formula: C16H18O9. M.W.: 354.31
Storage -20°C,Dark Storage CAS 905-99-7, 87099-73-8
Link

Chlorogenic acid <5-O-Caffeoylquinic acid>
 NS430302 NGRNagara Science Co.,Ltd. 10 mg $232

Description Source: Coffee. The Gold Standard. The most abundant chlorogenic acid in green coffee beans; serves as the primary benchmark for total polyphenol quantification. Purity: ≧99% (HPLC) . Molecular Formula: C16H18O9. M.W.: 354.31
Storage -20°C,Dark Storage CAS 327-97-9, 202650-88-2
Link

[Date : July 22 2026 00:11]

3-O-Caffeoylquinic acid <Neochlorogenic acid>


  • Product Code: NS430102
  • Supplier: NGR
  • Size: 5mg
  • Price: $290

Description Source: Coffee. The Early Eluter. Crucial for establishing precise chromatographic baselines and analyzing positional isomer migration. Purity: ≧98% (HPLC). Molecular Formula: C16H18O9. M.W.: 354.31
Storage -20°C,Dark Storage CAS 342811-68-1, 906-33-2
Link

4-O-Caffeoylquinic acid


  • Product Code: NS430202
  • Supplier: NGR
  • Size: 5mg
  • Price: $290

Description Source: Coffee. The Novel Bioactive Tool. Gaining rapid attention as a potent ferroptosis (cell death) inhibitor and structural marker for heat-induced isomerization. Purity: ≧98% (HPLC). Molecular Formula: C16H18O9. M.W.: 354.31
Storage -20°C,Dark Storage CAS 905-99-7, 87099-73-8
Link

Chlorogenic acid <5-O-Caffeoylquinic acid>


  • Product Code: NS430302
  • Supplier: NGR
  • Size: 10mg
  • Price: $232

Description Source: Coffee. The Gold Standard. The most abundant chlorogenic acid in green coffee beans; serves as the primary benchmark for total polyphenol quantification. Purity: ≧99% (HPLC) . Molecular Formula: C16H18O9. M.W.: 354.31
Storage -20°C,Dark Storage CAS 327-97-9, 202650-88-2
Link


Feruloylquinic Acids (FQAs)

[Date : July 22 2026 00:11]

Detail Product Name Product Code Supplier Size Price
3-O-Feruloylquinic acid
 NS430401 NGRNagara Science Co.,Ltd. 1 mg $435

Description Source: Coffee. The Peak Identification Standard. Commonly elutes first among FQA isomers in reversed-phase HPLC; essential for precise baseline separation and plant metabolomics. Purity: ≧98% (HPLC) . Molecular Formula: C17H20O9. M.W.: 368.34
Storage -20°C,Dark Storage CAS 40242-06-6, 87099-72-7
Link

4-O-Feruloylquinic acid
 NS430501 NGRNagara Science Co.,Ltd. 1 mg $435

Description Source: Coffee. The Thermal Stability Marker. Highly useful in studying the thermal degradation and isomerization pathways of polyphenols during the coffee roasting process. Purity: ≧98% (HPLC). Molecular Formula: C17H20O9. M.W.: 368.34
Storage -20°C,Dark Storage CAS 2613-86-7, 96646-16-1
Link

5-O-Feruloylquinic acid
 NS430602 NGRNagara Science Co.,Ltd. 5 mg $290

Description Source: Coffee. The Flavor & Quality Biomarker. The most abundant feruloylquinic acid in coffee beans, widely used to analyze the correlation between roasting defects and cup quality. Purity: ≧98% (HPLC). Molecular Formula: C17H20O9. M.W.: 368.34
Storage -20°C,Dark Storage CAS 53905-80-9, 62929-69-5
Link

[Date : July 22 2026 00:11]

3-O-Feruloylquinic acid


  • Product Code: NS430401
  • Supplier: NGR
  • Size: 1mg
  • Price: $435

Description Source: Coffee. The Peak Identification Standard. Commonly elutes first among FQA isomers in reversed-phase HPLC; essential for precise baseline separation and plant metabolomics. Purity: ≧98% (HPLC) . Molecular Formula: C17H20O9. M.W.: 368.34
Storage -20°C,Dark Storage CAS 40242-06-6, 87099-72-7
Link

4-O-Feruloylquinic acid


  • Product Code: NS430501
  • Supplier: NGR
  • Size: 1mg
  • Price: $435

Description Source: Coffee. The Thermal Stability Marker. Highly useful in studying the thermal degradation and isomerization pathways of polyphenols during the coffee roasting process. Purity: ≧98% (HPLC). Molecular Formula: C17H20O9. M.W.: 368.34
Storage -20°C,Dark Storage CAS 2613-86-7, 96646-16-1
Link

5-O-Feruloylquinic acid


  • Product Code: NS430602
  • Supplier: NGR
  • Size: 5mg
  • Price: $290

Description Source: Coffee. The Flavor & Quality Biomarker. The most abundant feruloylquinic acid in coffee beans, widely used to analyze the correlation between roasting defects and cup quality. Purity: ≧98% (HPLC). Molecular Formula: C17H20O9. M.W.: 368.34
Storage -20°C,Dark Storage CAS 53905-80-9, 62929-69-5
Link

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