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.
Click on the specific product, view the latest prices of the products, information, serving information
- Structure:
- Chemical Name:
- (Z)-4-HYDROXYTAMOXIFEN
- CAS:
- 65213-48-1
- MF:
- C26H29NO2
- Structure:
- Chemical Name:
- 10-Methoxyiminostilbene-5-carbonylchloride
- CAS:
- 28721-08-6
- MF:
- C16H12ClNO2
- Structure:
- Chemical Name:
- C-Desmethyl Metoprolol
- CAS:
- 109632-08-8
- MF:
- C14H23NO3
- Structure:
- Chemical Name:
- (6R,7R)-3-Chloromethyl-7-methoxy-8-oxo-7-(p-toluoylamino)-5-oxa-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid diphenylmethyl ester
- CAS:
- 68314-38-5
- MF:
- C30H27ClN2O6
- Structure:
- Chemical Name:
- Methyl a-formylphenylacetate
- CAS:
- 5894-79-1
- MF:
- C10H10O3
- Structure:
- Chemical Name:
- 1-Butanesulfonic acid methyl ester
- CAS:
- 2374-69-8
- MF:
- C5H12O3S
- Structure:
- Chemical Name:
- D-(-)-3-Acetylthio-2-methylpropionic acid
- CAS:
- 76497-39-7
- MF:
- C6H10O3S
- Structure:
- Chemical Name:
- 5,4'-DIHYDROXY-7-METHOXYISOFLAVONE-4'-O-GLUCOSIDE
- CAS:
- 89595-66-4
- MF:
- C22H22O10
- Structure:
- Chemical Name:
- OLANEXIDINE
- CAS:
- 146510-36-3
- MF:
- C17H27Cl2N5
- Structure:
- Chemical Name:
- 1-(2-ETHOXY-ETHYL)-1,3-DIHYDRO-BENZOIMIDAZOL-2-ONE
- CAS:
- 101953-61-1
- MF:
- C11H14N2O2
- Structure:
- Chemical Name:
- 3-Cyano-4-(2-methylpropoxy)benzenecarbothioamide
- CAS:
- 163597-57-7
- MF:
- C12H14N2OS
- Structure:
- Chemical Name:
- 1-BOC-4-(2-AMINO-4-PYRIDINYL)-PIPERAZINE
- CAS:
- 571189-23-6
- MF:
- C14H22N4O2
- Structure:
- Chemical Name:
- 1,3,5,7-Tetranitroadamantane
- CAS:
- 75476-36-7
- MF:
- C10H12N4O8
- Structure:
- Chemical Name:
- Fexofenadinone
- CAS:
- 76811-98-8
- MF:
- C32H37NO4
- Structure:
- Chemical Name:
- 4-PYRIDIN-4-YL-BUTYRIC ACID
- CAS:
- 102878-73-9
- MF:
- C9H11NO2
- Structure:
- Chemical Name:
- Glycine, N-[(4,7-dihydroxy-1-methyl-3-isoquinolinyl)carbonyl]-
- CAS:
- 2173338-12-8
- MF:
- C13H12N2O5
- Structure:
- Chemical Name:
- 5-Thiazolecarboxylic acid, 2-[3,5-diformyl-4-(2-methylpropoxy)phenyl]-4-methyl-, ethyl ester
- CAS:
- 2375033-26-2
- MF:
- C19H21NO5S
- Structure:
- Chemical Name:
- Furosemide Impurity 6
- CAS:
- 74793-12-7
- MF:
- C12H10ClNO3
- Structure:
- Chemical Name:
- Lumateperone Impurity 3
- CAS:
- 313544-76-2
- MF:
- C17H21N3O3
- Structure:
- Chemical Name:
- Butanoic acid, L-2-aminobutanoyl-L-2-amino-, methyl ester (9CI)
- CAS:
- 772292-30-5
- MF:
- C9H18N2O3
- Structure:
- Chemical Name:
- Hexanoic acid, 3-(hydroxymethyl)-, (3R)-
- CAS:
- 2096999-79-8
- MF:
- C7H14O3
- Structure:
- Chemical Name:
- 3-Thiophenecarboxylic acid, 4-formyl-2,5-dihydro-2-(4-hydroxybutylidene)-5-methyl-, (2Z)-
- CAS:
- 1025974-23-5
- MF:
- C11H14O4S
- Structure:
- Chemical Name:
- 1H-Pyrrole-3-methanamine, 1-[(1,4-dihydro-3-pyridinyl)sulfonyl]-5-(2-fluorophenyl)-N-methyl-
- CAS:
- 2416241-98-8
- MF:
- C17H18FN3O2S
- Chemical Name:
- impurity 44
- Chemical Name:
- 3-((2-acetamido-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)propane- 1,2-diyl diacetate
- CAS:
- 96429-68-4
- Structure:
- Chemical Name:
- L-erythro-Pentonic acid, 2-deoxy-2-fluoro-2-methyl-, γ-lactone, 3,5-dibenzoate, (2S)-
- CAS:
- 1946820-91-2
- MF:
- C20H17FO6
- Structure:
- Chemical Name:
- 5,5'-Bi-1H-benzimidazole, 6,6'-bis(difluoromethoxy)-2,2'-bis[[(3,4-dimethoxy-2-pyridinyl)methyl]thio]-
- CAS:
- 2251784-93-5
- MF:
- C32H28F4N6O6S2
- Structure:
- Chemical Name:
- 1,4,7,10-Tetraazacyclododecane-1,7-diacetic acid, 4,10-bis[2,3-dihydroxy-1-(hydroxymethyl)propyl]-
- CAS:
- 2514736-58-2
- MF:
- C20H40N4O10
- Structure:
- Chemical Name:
- Valsartan Methyl Ester N2-Trityl Analog
- CAS:
- 883223-10-7
- MF:
- C44H45N5O3
- Chemical Name:
- Ampicillin Impurity G
- Chemical Name:
- N-(5-((diphenylphosphoryl)methyl)-4-(3-fluorophenyl)-6-isopropylpyrimidin-2-yl)-N-methylmethanesulfonamide
- Chemical Name:
- Azacitidine Impurity EJ
- Chemical Name:
- Budesonide Impurity 28
- Structure:
- Chemical Name:
- Ethanol, 2-[2-(2-methyl-4-nitro-1H-imidazol-1-yl)ethoxy]-
- CAS:
- 19765-12-9
- MF:
- C8H13N3O4
- Structure:
- Chemical Name:
- INDEX NAME NOT YET ASSIGNED
- CAS:
- 2452301-30-1
- MF:
- C23H27ClO7
- Chemical Name:
- (5R,6S)-6-((R)-1-hydroxyethyl)-7-oxo-3-((S)-tetrahydrofuran-2-yl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4,4-dioxide
- Structure:
- Chemical Name:
- (3S,5R,6E) Rosuvastatin Calcium Salt (2:1)
- CAS:
- 2414245-11-5
- MF:
- C22H30CaFN3O6S
- Structure:
- Chemical Name:
- INDEX NAME NOT YET ASSIGNED
- CAS:
- 2452301-42-5
- MF:
- C23H27ClO7
- Chemical Name:
- Avatrombopag Impurity 35
- Structure:
- Chemical Name:
- 2-AMINO-2'-FLUOROBENZOPHENONE
- CAS:
- 1581-13-1
- MF:
- C13H10FNO
- Structure:
- Chemical Name:
- (R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2,2-dimethyl-1,2,3,4-tetrahydroisoquinolin-2-ium
- CAS:
- 2480467-84-1
- MF:
- C28H35NO7S
- Structure:
- Chemical Name:
- 5-METHOXY-2-(METHYLTHIO)BENZIMIDAZOLE
- CAS:
- 91168-31-9
- MF:
- C9H10N2OS
- Structure:
- Chemical Name:
- 4-METHYL-6-PYRIDIN-3-YLPYRIMIDIN-2-AMINE
- CAS:
- 90916-52-2
- MF:
- C10H10N4
- Structure:
- Chemical Name:
- 1-Benzyl-4-(5,6-dimethoxy-1-oxoindan-2-ylindenemethyl)piperidine
- CAS:
- 120014-07-5
- MF:
- C24H27NO3
- Chemical Name:
- Brivaracetam Impurity 55
- Structure:
- Chemical Name:
- alpha-(4-chlorophenyl)-alpha-[2-(dimethylamino)ethyl]pyridine-2-acetonitrile
- CAS:
- 65676-21-3
- MF:
- C17H18ClN3
- Chemical Name:
- Baloxavir Impurity ABCDEFGHJKL
- Structure:
- Chemical Name:
- INDEX NAME NOT YET ASSIGNED
- CAS:
- 2514724-36-6
- MF:
- C22H19F2N3
- Structure:
- Chemical Name:
- scopoline
- CAS:
- 487-27-4
- MF:
- C8H13NO2
- Structure:
- Chemical Name:
- N-(1-benzylpiperidin-4-yl)-N-phenylpropionamide
- CAS:
- 1474-02-8
- MF:
- C21H26N2O
- Chemical Name:
- Oseltamivir Impurity 106
- Chemical Name:
- Oseltamivir Impurity 85
- Chemical Name:
- Oseltamivir Impurity 83
- Chemical Name:
- 1-Ethyl-2-[[(2-methoxy-5-sulphamoyl
- Structure:
- Chemical Name:
- 2-(4-Bromo-3-formylphenoxy)-benzonitrile
- CAS:
- 1160182-46-6
- MF:
- C14H8BrNO2
- Chemical Name:
- Carbetocin S-Oxide I
- Chemical Name:
- Dolutegravir Impurity 15
- Structure:
- Chemical Name:
- 1-(4-NITRO-PHENYL)-1H-PYRIDIN-2-ONE
- CAS:
- 53427-97-7
- MF:
- C11H8N2O3
- Structure:
- Chemical Name:
- PeraMpanel
- CAS:
- 380919-67-5
- MF:
- C23H15N3O2
- Chemical Name:
- Empagliflozin Impurity 86
- Structure:
- Chemical Name:
- Olopatadine Impurity 11 HBr
- CAS:
- 4174-84-9
- MF:
- C21H24Br2NP
- Chemical Name:
- Iohexol Impurity P
- Chemical Name:
- Avibactam sodium Impurity CEA
- Structure:
- Chemical Name:
- Sulbactam Impurity 2
- CAS:
- 111790-24-0
- MF:
- C8H13NO6S
- Structure:
- Chemical Name:
- Vortioxetine Impurity 8 HCl
- CAS:
- 2137722-14-4
- MF:
- C18H23ClN2S
- Chemical Name:
- Oseltamivir Impurity 75
- Structure:
- Chemical Name:
- [1,1'-bicyclohexyl]-1-carboxylic acid
- CAS:
- 60263-54-9
- MF:
- C13H22O2
- Structure:
- Chemical Name:
- 3-Pyridinecarboxamide, 5-chloro-N-[4-(4-chloro-2-thienyl)-5-(4-cyclohexyl-1-piperazinyl)-2-thiazolyl]-6-(dimethylamino)-
- CAS:
- 2626934-45-8
- MF:
- C25H30Cl2N6OS2
- Chemical Name:
- Dapagliflozin Impurity 49
- Structure:
- Chemical Name:
- 11-[3-(dimethylamino)propyl]-6,11-dihydrodibenz[b,e]oxepin-11-ol
- CAS:
- 4504-88-5
- MF:
- C19H23NO2
- Chemical Name:
- Avatrombopag Impurity ABCDEFGHJKL
- Structure:
- Chemical Name:
- 1-(2-chloroethyl)-3-(dicyclopropylmethyl)urea
- CAS:
- 54187-03-0
- MF:
- C10H17ClN2O
- Structure:
- Chemical Name:
- 1,3-Dioxane-4-acetic acid, 6-[2-[3-[[[2-[(4R,6R)-6-[2-(1,1-dimethylethoxy)-2-oxoethyl]-2,2-dimethyl-1,3-dioxan-4-yl]ethyl]amino]carbonyl]-5-(4-fluorophenyl)-2-(1-methylethyl)-4-phenyl-1H-pyrrol-1-yl]ethyl]-2,2-dimethyl-, 1,1-dimethylethyl ester, (4R,6R)-
- CAS:
- 1229658-18-7
- MF:
- C48H67FN2O9
- Structure:
- Chemical Name:
- 1H-Pyrrole-1-heptanoic acid, 2-(4-fluorophenyl)-β,δ-dihydroxy-5-(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-, 1,1-dimethylethyl ester, (βS,δR)-
- CAS:
- 2588261-38-3
- MF:
- C37H43FN2O5
- Structure:
- Chemical Name:
- 3-hydroxy-2,4-dimethoxybenzaldehyde
- CAS:
- 32246-34-7
- MF:
- C9H10O4
- Structure:
- Chemical Name:
- butyl 3-aminosulphonyl-5-butylamino-4-phenoxybenzoate
- CAS:
- 32643-00-8
- MF:
- C21H28N2O5S
- Structure:
- Chemical Name:
- 11beta,16alpha,17,21-tetrahydroxypregn-4-ene-3,20-dione
- CAS:
- 1171-81-9
- MF:
- C21H30O6
- Structure:
- Chemical Name:
- trans-2-amino-N-(4-hydroxycyclohexyl)benzamide
- CAS:
- 15942-11-7
- MF:
- C13H18N2O2
- Structure:
- Chemical Name:
- 4-O-(Carboxymethyl)rifamycin
- CAS:
- 13929-35-6
- MF:
- C39H49NO14
- Structure:
- Chemical Name:
- ethyl 3,5-bis(benzyloxy)benzoate
- CAS:
- 50841-46-8
- MF:
- C23H22O4
- Chemical Name:
- (R)-8-(3-aminopiperidin-1-yl)-3-methyl-1,7-bis((4-methylquinazolin-2-yl)methyl)-3,7-dihydro-1H-purine-2,6-dione
- Chemical Name:
- Oxytocin Impurity 8 Trifluoroacetate
- Chemical Name:
- Peramivir Dehydrated Impurity
- Chemical Name:
- Apixaban Impurity 78
- Chemical Name:
- Formoterol Impurity 32
- Chemical Name:
- (1S,2S,3R,4R)-2-((R)-1-acetamido-2-ethylbutyl)-4-guanidino-3-hydroxycyclopentane-1-carboxylic acid
- Structure:
- Chemical Name:
- Desloratadine EP impurity A hcl
- CAS:
- 2250242-44-3
- MF:
- C19H21Cl2FN2
- Structure:
- Chemical Name:
- (3S,4S)-Tofacitinib
- CAS:
- 1092578-47-6
- MF:
- C16H20N6O
- Chemical Name:
- Rosuvastatin Impurity 145
- Chemical Name:
- NA
- Chemical Name:
- Peramivir Intermediate impurity 1
- Chemical Name:
- NA
- Chemical Name:
- Peramivir Intermediate Impurity 43
- Chemical Name:
- Peramivir Deacetylated Impurity
- Chemical Name:
- NA
- Chemical Name:
- Loxoprofen Sodium Impurity 35
- Chemical Name:
- Dashatinib impurity 46
- Structure:
- Chemical Name:
- (R,S)-N-Acetyl-3,4-dimethoxy phenylalanine
- CAS:
- 27313-65-1
- MF:
- C13H17NO5