Standard
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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- Structure:
- Chemical Name:
- Linagliptin Impurity 28
- CAS:
- 2074688-84-7
- MF:
- C22H23N7O3
- Chemical Name:
- Pantoprazole Impurity 3
- Chemical Name:
- Ticagrelor Related Compound 58
- Chemical Name:
- Vildagliptin Impurity 9
- Structure:
- Chemical Name:
- Cefathiamidine Impurity 5
- CAS:
- 40818-86-8
- MF:
- C10H11ClN2O4S
- Structure:
- Chemical Name:
- methyl 4-hydroxy-3,5-diisopropylbenzoic acid
- MF:
- C14H20O3
- Chemical Name:
- Apixaban Impurity J
- Chemical Name:
- Avibactam Impurity C
- Chemical Name:
- Brexpiprazole Impurity M
- Chemical Name:
- Cefaclor Impurity 5
- Chemical Name:
- Linagliptin Impurity 39
- Chemical Name:
- Peramivir Impurity 5
- Chemical Name:
- Pidotimod Impurity O
- Chemical Name:
- Pramipexole EP Impurity C
- Structure:
- Chemical Name:
- Imiquimod Impurity 5
- CAS:
- 853793-02-9
- MF:
- C15H18N4
- Structure:
- Chemical Name:
- Dolutegravir 4-Desfluoro Impurity
- CAS:
- 1863916-87-3
- MF:
- C20H20FN3O5
- Structure:
- Chemical Name:
- Tetrabenazine Dehydro Impurity
- CAS:
- 100322-43-8
- MF:
- C19H25NO3
- Structure:
- Chemical Name:
- Cefotiam Impurity 22
- CAS:
- 1628441-07-5
- MF:
- C13H14N4O5S2
- Structure:
- Chemical Name:
- Dezocine Impurity 2
- CAS:
- 100667-17-2
- MF:
- C16H21NO
- Structure:
- Chemical Name:
- loteprednol Impurity 7
- CAS:
- 82034-20-6
- MF:
- C24H33ClO7
- Structure:
- Chemical Name:
- Sitagliptin Impurity 28
- CAS:
- 898543-70-9
- MF:
- C32H25F12N9O2
- Structure:
- Chemical Name:
- Vilanterol Impurity 3 Triphenylacetate
- CAS:
- 503070-62-0
- MF:
- C23H31Cl2NO5
- Chemical Name:
- Empagliflozin Impurity 33
- Structure:
- Chemical Name:
- Sugammadex Impurity 21
- CAS:
- 2412952-93-1
- MF:
- C72H113NaO48S8
- Structure:
- Chemical Name:
- 4-((1,4,8,11-tetraazacyclotetradecan-1-yl)methyl)benzaldehyde trihydrochloride
- CAS:
- 1254176-45-8
- MF:
- C18H30N4O
- Structure:
- Chemical Name:
- 3'-Deoxyneamine
- CAS:
- 34051-04-2
- MF:
- C12H26N4O5
- Structure:
- Chemical Name:
- Remifentanil Impurity 1 (RTF-02)
- CAS:
- 938184-94-2
- MF:
- C16H21N3O2
- Structure:
- Chemical Name:
- methyl (3aS,4R,6S,6aR)-4-((tert-butoxycarbonyl)amino)-3-(pentan-3-yl)-3a,5,6,6a-tetrahydro-4H-cyclopenta[d]isoxazole-6-carboxylate
- CAS:
- 383910-25-6
- MF:
- C18H30N2O5
- Structure:
- Chemical Name:
- sodium (((((R)-1-(6-amino-9H-purin-9-yl)propan-2-yl)oxy) methyl)oxidophosphoryl)-L-alaninate
- CAS:
- 382140-24-1
- MF:
- C12H19N6O5P
- Structure:
- Chemical Name:
- N-Des-tetrahydrofuran N-(6,7-Dimethoxy-4,4a-dihydroquinazolin-4-amine) Alfuzosin
- CAS:
- 928780-95-4
- MF:
- C24H30N8O4
- Chemical Name:
- Zopiclone Impurity 13
- Structure:
- Chemical Name:
- N-METHYLISATIN
- CAS:
- 2058-74-4
- MF:
- C9H7NO2
- Structure:
- Chemical Name:
- 1-bromo-3-(4-ethoxybenzyl)benzene
- CAS:
- 898538-17-5
- MF:
- C15H15BrO
- Structure:
- Chemical Name:
- (2S,3R,4R,5S,6R)-2-(4-chloro-3-((4-ethoxyphenyl)(methoxy) methyl)phenyl)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol
- CAS:
- 1318794-28-3
- MF:
- C22H27ClO7
- Structure:
- Chemical Name:
- Brivaracetam Impurity
- CAS:
- 2432911-37-8
- MF:
- C11H22O3
- Chemical Name:
- Azithromycin EP Impurity K
- Chemical Name:
- Evogliptin Impurity 1
- Chemical Name:
- Ondansetron IMpurity 5
- Chemical Name:
- Plerixafor Impurity 1
- Chemical Name:
- MeropeneM iMpurity 7
- Chemical Name:
- Afatinib Impurity 50
- Structure:
- Chemical Name:
- Brexpiprazole Impurity 34
- CAS:
- 2247155-42-4
- MF:
- C25H27N3O4S
- Structure:
- Chemical Name:
- Cabozantinib Impurity 5
- CAS:
- 104330-60-1
- MF:
- C11H12FNO3
- Chemical Name:
- Dronedarone Impurity 9
- Chemical Name:
- Empagliflozin Impurity 58
- Chemical Name:
- Exemestane Impurity 6
- CAS:
- 14895-71-7
- Chemical Name:
- Gadobutrol Impurity 10
- Chemical Name:
- Linagliptin Impurity 55
- Chemical Name:
- Oseltamivir Impurity 52
- Chemical Name:
- Palbociclib Impurity 65
- Chemical Name:
- Pimecrolimus Impurity 1
- Chemical Name:
- Rosuvastatin Impurity 99
- Chemical Name:
- Terbutaline Impurity 18
- Chemical Name:
- Ticagrelor Impurity 123
- Structure:
- Chemical Name:
- Moxifloxacin Impurity 37
- CAS:
- 1803729-19-2
- MF:
- C7H3ClF2O2
- Structure:
- Chemical Name:
- Nimodipine Impurity 12
- CAS:
- 39562-18-0
- MF:
- C19H22N2O6
- Chemical Name:
- Rosuvastatin Impurity 53
- Structure:
- Chemical Name:
- Sulbactam Impurity 8
- CAS:
- 75527-88-7
- MF:
- C8H10BrNO5S
- Structure:
- Chemical Name:
- Tenofovir Impurity 64
- CAS:
- 1878175-76-8
- MF:
- C13H23N5O8P2
- Chemical Name:
- Ticagrelor Impurity 65
- Structure:
- Chemical Name:
- Ticagrelor Impurity 72
- CAS:
- 1402150-11-1
- MF:
- C24H28F2N6O5S
- Chemical Name:
- Topiroxostat Impurity 18
- Structure:
- Chemical Name:
- Isorhamnetin 3,7-O-diglucoside
- CAS:
- 6758-51-6
- MF:
- C28H32O17
- Chemical Name:
- Afatinib Impurity 26
- Structure:
- Chemical Name:
- Amifostine Impurity 5
- CAS:
- 712255-27-1
- MF:
- C5H9BrN2
- Chemical Name:
- Amikacin EP Impurity E
- Structure:
- Chemical Name:
- Aztreonam Impurity 5
- CAS:
- 2195336-17-3
- MF:
- C4H10N2O5S
- Chemical Name:
- Canagliflozin Impurity 35
- Structure:
- Chemical Name:
- Cefazolin Impurity 7 (Cefazolin Trimethylsilyl Ester)
- CAS:
- 1072000-00-0
- MF:
- C17H22N8O4S3Si
- Chemical Name:
- Dapagliflozin Impurity 25
- Chemical Name:
- Doripenem Impurity 1
- Chemical Name:
- Erlotinib Impurity 54
- Chemical Name:
- Erlotinib Impurity 59
- Chemical Name:
- Etoposide Impurity 5
- Chemical Name:
- Olaparib Impurity 26
- Structure:
- Chemical Name:
- Oseltamivir Impurity 14
- CAS:
- 2081110-44-1
- MF:
- C16H28N2O4
- Chemical Name:
- Rocuronium bromide Impurity 35
- Chemical Name:
- Adefovir Impurity 5
- Chemical Name:
- Apremilast Impurity QJ
- Chemical Name:
- Apremilast Impurity TTN
- Chemical Name:
- AZD9291 Osimertinib Impurity 1
- Chemical Name:
- Dextrorotation lansoprazole Impurity I
- Chemical Name:
- Ivabradine Impurity 31
- Chemical Name:
- lansoprazole Impurity 28
- Chemical Name:
- Lincomycin sulfoxide Impurity 1
- Structure:
- Chemical Name:
- Olanzapine impurity Q
- MF:
- C17H20N4S
- Chemical Name:
- Palbociclib Impurity 32
- Chemical Name:
- Ropivacaine Impurity 32
- Chemical Name:
- Ropivacaine Impurity 41
- Chemical Name:
- Sugammadex sodium dimer
- Chemical Name:
- Sugammadex sodium Org49095 Impurity
- Chemical Name:
- Topiroxostat Impurity Ⅲ-2
- Structure:
- Chemical Name:
- Parecoxib Impurity 12
- CAS:
- 2229657-81-0
- MF:
- C19H18N2O4S
- Structure:
- Chemical Name:
- Afatinib impurity 29
- CAS:
- 1957132-02-3
- MF:
- C22H23ClFN5O2
- Structure:
- Chemical Name:
- Avibactam Impurity 44
- CAS:
- 2064219-22-1
- MF:
- C23H46N4O6S
- Chemical Name:
- Bortezomib Impurity W
- Structure:
- Chemical Name:
- Butyphthalide impurity 43
- CAS:
- 952412-99-6
- MF:
- C11H14O3
- Structure:
- Chemical Name:
- Tofacitinib Impurity 112
- CAS:
- 2179757-75-4
- MF:
- C12H19N3O2
- Chemical Name:
- Trelagliptin Impurity 42
- Chemical Name:
- Carbocistein Impurity E