Reference Standards

Reference Standards

Reference standards are highly purified, well-characterized substances used to verify the identity, purity, potency, and analytical performance of laboratory measurements. They serve as essential benchmarks in chemical analysis, pharmaceutical quality control, environmental monitoring, and food testing. Reference standards ensure the accuracy and reproducibility of analytical methods by providing traceable calibration materials compliant with international metrological guidelines. Their preparation involves rigorous purification, structural confirmation, stability testing, and certification of assigned values. These standards are critical for method development, instrument calibration, system suitability testing, and regulatory compliance. By establishing analytical comparability across laboratories and industries, reference standards support scientific reliability and strengthen global quality assurance frameworks.

4,5-Dihydroxy-4,5-Dihydrobenzo(A)Pyrene CAS NO 28622-84-6

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CAS No.:28622-84-6

Grade:Pharmacy Grade

Content:99.90%

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3-Methoxy-4-Hydroxyphenylglycol Sulfate CAS NO 28700-49-4

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CAS No.:28700-49-4

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Content:99.90%

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5Α-Cholestane-2Α,19-Diol 2-Acetate CAS NO 28809-69-0

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CAS No.:28809-69-0

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Content:99.90%

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17A-17B-Hydroxyandrosta-1,4,6-Trien-3-One CAS NO 28816-02-6

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CAS No.:28816-02-6

Grade:Pharmacy Grade

Content:99.90%

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Nmethylnnitrosonacetylurea CAS NO 28895-91-2

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CAS No.:28895-91-2

Grade:Pharmacy Grade

Content:99.90%

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(14R)-7,20-Epoxy-7Β,14-[Ethylidenebis(Oxy)]-1Α,6Β-Dihydroxykaur-16-En-15-One CAS NO 28957-05-3

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CAS No.:28957-05-3

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Content:99.90%

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Methyl Phaeoporphyrin A(5) CAS NO 29169-79-7

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CAS No.:29169-79-7

Grade:Pharmacy Grade

Content:99.90%

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