Standard Substance Protein assay reagent Titration standard Forensic and veterinary standards Analytical Standards Spectral Standards Chemistry Cosmetics Standard Volatile organic compounds (VOCs) Clinical Standards Veterinary drug and Pesticide residues Agricultural and environmental standards Chromatography Standards Life Science Standards Food and cosmetics standards Food and beverage standards Inorganic single element standard solution Pharmaceutical Impurity Reference Standards Water Testing Standards Organic Standard Solutions Organic Pollutant Standards Chinese medicine standards
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Standard

Standard Substance Protein assay reagent Titration standard Forensic and veterinary standards Analytical Standards Spectral Standards Chemistry Cosmetics Standard Volatile organic compounds (VOCs) Clinical Standards Veterinary drug and Pesticide residues Agricultural and environmental standards Chromatography Standards Life Science Standards Food and cosmetics standards Food and beverage standards Inorganic single element standard solution Pharmaceutical Impurity Reference Standards Water Testing Standards Organic Standard Solutions Organic Pollutant Standards Chinese medicine standards
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In the analysis work, it often demanded to apply high-quality compound with the exact content being accurate in order to be compared as the detection control or used to calibrate the instrument, the compound is known as standard sample.
Standard refers to the standard substance used for measuring the potency of biological products. When the production department submits to a higher authority for approval of the quality standard of the biological product, they should also provide the standard sample (indicated in unit (μ)) used for measuring the potency of the tested product.

According to different application, the verification products can be divided into biological standard for the testing of biological products, endocrine drugs, antibiotics and other bioassay and chemical standards including:
1 chemical standards used for calibration of the instrument;
2 chemical reference standards used for calibration of the ultraviolet or infrared spectrum of the drugs;
3 control standards used for the purity test of drugs as well as the impurity control or as the control standards for content determination of the medicine.

In the page 67 of the appendix in the People's Republic of China Pharmacopoeia 1990 1st edition, we can find hundreds kinds of standards including bornyl ester acetate, eugenol and panaxadiol as well as 39 kinds of control medicine for the purify inspection of traditional Chinese medicine, impurity control or the content determination.

International standards
This refers to standard sample, with the potency units of the existing international standard sample potency units as baseline, undergoing further calibration of its potency units on the basis of a wide range of international cooperation. Its potency is expressed in 1U. For a certain product, for the establishment of the first international standard sample, the determination of its potency units should be consulted and decided by the Committee of Experts before the announcement. The international standard is a standard reference substance for worldwide preparation of national standards, so that the international standards can achieve unity.

Reagents and standards
All reagents in the food analysis laboratories should be clearly labeled to indicate the following: 1 name; 2 the date of preparation; 3 Signature from the people in charge; 4 if necessary, we need to add content such as safety and validity and so on.
Most food analysis should use standard sample as reference for qualitative and quantitative determination. The standard sample should be classified according to the following classification methods: 1 international standard; 2 national standards; 3 internal standard; 4 other standards.
Receptacle for reference standards should be clearly affixed to the label, to indicate the following: 1 name; 2 standard document number; 3 Opening times; 4 Validity; 5 Signature.
In addition, the laboratory should keep all the necessary specific files for all the necessary reference standards.
Capacity analysis standard solution should also be strictly managed. It should be clearly posted on all the standard solution containers with labels to indicate: 1 name; 2 concentration; 3 formulation date; 4 No of formulated procedures; 5 storage conditions; 6 validity; 7 Signature from people in charge.

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Chemical Name:
Afatinib Impurity 26
Structure:
Chemical Name:
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MF:
C5H9BrN2
Chemical Name:
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Structure:
Chemical Name:
Aztreonam Impurity 5
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C4H10N2O5S
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Structure:
Chemical Name:
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1072000-00-0
MF:
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Erlotinib Impurity 54
Chemical Name:
Erlotinib Impurity 59
Chemical Name:
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Chemical Name:
Olaparib Impurity 26
Structure:
Chemical Name:
Oseltamivir Impurity 14
CAS:
2081110-44-1
MF:
C16H28N2O4
Chemical Name:
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Chemical Name:
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Dextrorotation lansoprazole Impurity I
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Ivabradine Impurity 31
Chemical Name:
lansoprazole Impurity 28
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Lincomycin sulfoxide Impurity 1
Structure:
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MF:
C17H20N4S
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Chemical Name:
Ropivacaine Impurity 32
Chemical Name:
Ropivacaine Impurity 41
Chemical Name:
Sugammadex sodium dimer
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Sugammadex sodium Org49095 Impurity
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Topiroxostat Impurity Ⅲ-2
Structure:
Chemical Name:
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MF:
C19H18N2O4S
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Afatinib impurity 29
Structure:
Chemical Name:
Avibactam Impurity 44
CAS:
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MF:
C23H46N4O6S
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Structure:
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MF:
C11H14O3
Structure:
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CAS:
406-00-8
MF:
C6H6FNO
Structure:
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CAS:
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MF:
C17H14F3N3O4S
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Febuxostat Impurity 79
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Febuxostat Impurity 94
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Fosaprepitant Impurity ELS
Structure:
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417719-45-0
MF:
C19H17ClN4O4
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Regorafenib Impurity 19
Chemical Name:
Regorafenib Impurity 26
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Sitafloxacin Impurity ZZ-B-01
Structure:
Chemical Name:
Tofacitinib Impurity 3
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1206825-36-6
MF:
C13H19N5
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Tofacitinib Impurity 89
Structure:
Chemical Name:
Nintedanib Impurity L
CAS:
2095596-44-2
MF:
C31H33N5O4
Structure:
Chemical Name:
(2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-2-ethyl-3,4,10,11,13- pentahydroxy-3,5,6,8,10,12,14-heptamethyl-1-oxa-6- azacyclopentadecan-15-one
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117693-42-2
MF:
C22H43NO7
Structure:
Chemical Name:
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CAS:
887001-08-3
MF:
C28H35N7
Structure:
Chemical Name:
Dapoxetine iMpurity
CAS:
38262-42-9
MF:
C11H10O3S
Chemical Name:
Eltrombopag Impurity 7
Chemical Name:
Saxagliptin Impurity 9
Structure:
Chemical Name:
(1r,4r)-4-((2-aminobenzyl)amino)cyclohexanol
CAS:
15992-77-5
MF:
C15H22N2O5
Chemical Name:
Moxifloxacin degrade Impurity
Chemical Name:
Edaravone Impurity 17
Chemical Name:
Capecitabine impurity 7
Chemical Name:
Linagliptin Impurity 46
Structure:
Chemical Name:
((3R,5S,E)-3,5-dihydroxy-7-(4-isopropyl-2-(N-methylmethylsulfonamido)-6-phenylpyrimidin-5-yl)hept-6-enoate)calcium(II)
MF:
C44H56CaN6O12S2
Structure:
Chemical Name:
Levofloxacin Impurity 24
MF:
C18H20FN3O4
Structure:
Chemical Name:
(trans)-2-(3,4-difluorophenyl)cyclopropanecarboxamide
CAS:
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MF:
C10H9F2NO
Structure:
Chemical Name:
(3R,5S,Z)-7-(4-(4-fluorophenyl)-6-isopropyl-2-(N-methylmethylsulfonamido)pyrimidin-5-yl)-3,5-dihydroxyhept-6-enoic acid calcium(II)
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1445208-17-2
MF:
C22H28FN3O6S
Structure:
Chemical Name:
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733036-94-7
MF:
C25H35FO5
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Tropisetron Impurity 1
Chemical Name:
Fosaprepitant Impurity DBJ
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Cabozantinib impurity 29
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Cabozantinib impurity 34
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Carfilzomib Impurity YGH
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Ondansetron Impurity 3
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Chemical Name:
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Structure:
Chemical Name:
Pregabalin Impurity 8
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44996-52-3
MF:
C7H11NO3
Structure:
Chemical Name:
Pregabalin Impurity 14
CAS:
1610546-44-5
MF:
C7H11NO3
Chemical Name:
Cefditoren Impurity 1
Structure:
Chemical Name:
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CAS:
79962-91-7
MF:
C16H17N3O5S
Structure:
Chemical Name:
Pralatrexate Impurity 8
CAS:
112408-16-9
MF:
C8H15NO4
Chemical Name:
Pitavastatin Impurity 46
Chemical Name:
Canagliflozin Impurity 46
Chemical Name:
Lenvatinib Impurity 37
Chemical Name:
Sitafloxacin Impurity 20
Chemical Name:
posaconazole impurity 66
Chemical Name:
Dapoxetine impurity 33
Chemical Name:
Budesonide Impurity 4
Chemical Name:
Atracurium Impurity 31
Structure:
Chemical Name:
Canagliflozin Impurity 49
CAS:
2243132-56-9
MF:
C34H35FO11S
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Canagliflozin Impurity 55
Chemical Name:
Rosuvastatin Impurity 74
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Tofacitinib Impurity 106
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Hydroxychloroquine Impurity J
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Levetiracetam Impurity 25
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Levosimendan Impurity 7
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Cabozantinib impurity K
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Trifluridine Impurity B
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Rotigotine Impurity
Structure:
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Olprinone Impurity 2
CAS:
106730-62-5
MF:
C14H12N4O2
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Nicorandil Impurity F
Chemical Name:
Nicorandil Impurity A