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 CAS MF
Methyl ethanesulfonate Methyl ethanesulfonate 1912-28-3 C3H8O3S
Sodium cacodylate trihydrate Sodium cacodylate trihydrate 6131-99-3 C2H10AsNaO3
Ethyl indole-3-carboxylate Ethyl indole-3-carboxylate 776-41-0 C11H11NO2
Canrenone Canrenone 976-71-6 C22H28O3
4-Methyl-2-hexanamine hydrochloride 4-Methyl-2-hexanamine hydrochloride 13803-74-2 C7H18ClN
Methylisothiazolinone Methylisothiazolinone 2682-20-4 C4H5NOS
Sulfosulfuron Sulfosulfuron 141776-32-1 C16H18N6O7S2
(+/-)-2-(6-METHOXY-2-NAPHTHYL)PROPIONIC ACID (+/-)-2-(6-METHOXY-2-NAPHTHYL)PROPIONIC ACID 23981-80-8 C14H14O3
Dehydroepiandrosterone acetate Dehydroepiandrosterone acetate 853-23-6 C21H30O3
4-Amino-5-chloro-2,1,3-benzothiadiazole 4-Amino-5-chloro-2,1,3-benzothiadiazole 30536-19-7 C6H4ClN3S
3-Methylflavone-8-carboxylic acid 3-Methylflavone-8-carboxylic acid 3468-01-7 C17H12O4
Cabergoline Cabergoline 81409-90-7 C26H37N5O2
Oxyclozanide Oxyclozanide 2277-92-1 C13H6Cl5NO3
5-Amino-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodo-1,3-benzenedicarboxamide 5-Amino-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodo-1,3-benzenedicarboxamide 76801-93-9 C14H18I3N3O6
Desoximetasone Desoximetasone 382-67-2 C22H29FO4
Calcium ascorbate dihydrate Calcium ascorbate dihydrate 5743-28-2 C12H18CaO14
Phenylephrine Phenylephrine 59-42-7 C9H13NO2
(S)-(-)-4-Amino-2-hydroxybutyric acid (S)-(-)-4-Amino-2-hydroxybutyric acid 40371-51-5 C4H9NO3
1-Phenyltetrazole-5-thiol 1-Phenyltetrazole-5-thiol 86-93-1 C7H6N4S
Human serum albumin Human serum albumin 70024-90-7 NULL
TETRODOTOXIN TETRODOTOXIN 4368-28-9 C11H17N3O8
CORTEXOLONE CORTEXOLONE 152-58-9 C21H30O4
Paricalcitol Paricalcitol 131918-61-1 C27H44O3
AMMELIDE AMMELIDE 645-93-2 C3H4N4O2
PALLADIUM ON STRONTIUM CARBONATE, REDUCED PALLADIUM ON STRONTIUM CARBONATE, REDUCED C2H2O6PdSr
Distearyl thiodipropionate Distearyl thiodipropionate 693-36-7 C42H82O4S
2-PIPERIDYLMETHYLAMINE 2-PIPERIDYLMETHYLAMINE 22990-77-8 C6H14N2
5-Difluoromethoxy-2-{[(3,4-dimethoxy-2-pyridinyl)methyl]thio}-1H-benzimidazole 5-Difluoromethoxy-2-{[(3,4-dimethoxy-2-pyridinyl)methyl]thio}-1H-benzimidazole 102625-64-9 C16H15F2N3O3S
7-Ethyl tryptophol 7-Ethyl tryptophol 41340-36-7 C12H15NO
Octylamine Octylamine 111-86-4 C8H19N
Starane Starane 81406-37-3 C15H21Cl2FN2O3
2-Chlorophenothiazine 2-Chlorophenothiazine 92-39-7 C12H8ClNS
3-(2-Chloro-6-fluorophenyl)-5-methylisoxazole-4-carboxylic acid 3-(2-Chloro-6-fluorophenyl)-5-methylisoxazole-4-carboxylic acid 3919-74-2 C11H7ClFNO3
1,2,3,5-Tetrachlorobenzene 1,2,3,5-Tetrachlorobenzene 634-90-2 C6H2Cl4
Amylamine Amylamine 110-58-7 C5H13N
Carbadox Carbadox 6804-07-5 C11H10N4O4
Benoxinate Hydrochloride Benoxinate Hydrochloride 5987-82-6 C17H29ClN2O3
THYMOQUINONE THYMOQUINONE 490-91-5 C10H12O2
4,4'-Methylene bis(2-chloroaniline) 4,4'-Methylene bis(2-chloroaniline) 101-14-4 C13H12Cl2N2
1,1,1-TRICHLORO-2-METHYL-2-PROPANOL HEMIHYDRATE 1,1,1-TRICHLORO-2-METHYL-2-PROPANOL HEMIHYDRATE 6001-64-5 C8H16Cl6O3
trans-3-Indoleacrylic acid trans-3-Indoleacrylic acid 29953-71-7 C11H9NO2
Homosalate Homosalate 118-56-9 C16H22O3
Indoxacarb Indoxacarb 144171-61-9 C22H17ClF3N3O7
Zaleplon Zaleplon 151319-34-5 C17H15N5O
Eprinomectin Eprinomectin 123997-26-2 C50H75NO14
Ascomycin Ascomycin 104987-12-4 C43 H69 N O12
5-Amino-4-imidazolecarboxamide 5-Amino-4-imidazolecarboxamide 360-97-4 C4H6N4O
Lynestrenol Lynestrenol 52-76-6 C20H28O
Isatin Isatin 91-56-5 C8H5NO2
3-Chloro-10,11-dihydro-5H-dibenzo[b,f]azepine 3-Chloro-10,11-dihydro-5H-dibenzo[b,f]azepine 32943-25-2 C14H12ClN
1-(3-Trifluoromethylphenyl)piperazine hydrochloride 1-(3-Trifluoromethylphenyl)piperazine hydrochloride 16015-69-3 C11H14ClF3N2
Di-n-butyl ether Di-n-butyl ether 142-96-1 C8H18O
7-Hydroxy-5-methyl-1,3,4-triazaindolizine 7-Hydroxy-5-methyl-1,3,4-triazaindolizine 2503-56-2 C6H6N4O
Olive oil Olive oil 8001-25-0 N/A
Ferene disodium salt Ferene disodium salt 79551-14-7 C16H8N4Na2O8S2
Dexpanthenol Dexpanthenol 81-13-0 C9H19NO4
2-(2-Methoxyphenoxy)ethylamine 2-(2-Methoxyphenoxy)ethylamine 1836-62-0 C9H13NO2
Oleamide Oleamide 301-02-0 C18H35NO
N-Methylpyrrole-2-carboxaldehyde N-Methylpyrrole-2-carboxaldehyde 1192-58-1 C6H7NO
L-Octahydroindole-2-carboxylic acid L-Octahydroindole-2-carboxylic acid 80875-98-5 C9H15NO2
4-Methoxyisophthalic acid 4-Methoxyisophthalic acid 2206-43-1 C9H8O5
1-Benzylpiperazine dihydrochloride 1-Benzylpiperazine dihydrochloride 5321-63-1 C11H18Cl2N2
5,5-DIMETHYL-1-PYRROLINE N-OXIDE 5,5-DIMETHYL-1-PYRROLINE N-OXIDE 3317-61-1 C6H11NO
2-Butyl-3-(4-hydroxybenzoyl)benzofuran 2-Butyl-3-(4-hydroxybenzoyl)benzofuran 52490-15-0 C19H18O3
1-(3-Chlorophenyl)piperazine hydrochloride 1-(3-Chlorophenyl)piperazine hydrochloride 65369-76-8 C10H14Cl2N2
2-Chlorothioxanthone 2-Chlorothioxanthone 86-39-5 C13H7ClOS
6-CHLORO-1,3-BENZOXAZOL-2(3H)-ONE 6-CHLORO-1,3-BENZOXAZOL-2(3H)-ONE 19932-84-4 C7H4ClNO2
N-(Isoxazol-5-yl)sulphanilamide N-(Isoxazol-5-yl)sulphanilamide 7758-79-4 C9H9N3O3S
Isoxepac Isoxepac 55453-87-7 C16H12O4
1,3-Dihydro-4-(2-hydroxyethyl)-2H-indole-2-one 1,3-Dihydro-4-(2-hydroxyethyl)-2H-indole-2-one 139122-19-3 C10H11NO2
3-Ethoxy-4-ethoxycarbonyl phenylacetic acid 3-Ethoxy-4-ethoxycarbonyl phenylacetic acid 99469-99-5 C13H16O5
2,5-Diphenyloxazole 2,5-Diphenyloxazole 92-71-7 C15H11NO
2-Isopropylthioxanthone 2-Isopropylthioxanthone 5495-84-1 C16H14OS
Ciclesonide Ciclesonide 126544-47-6 C32H44O7
FORMATE ION CHROMATOGRAPHY STANDARD FORMATE ION CHROMATOGRAPHY STANDARD 24203-36-9 CH2O2
alpha-(2,4-Dichlorophenyl)-1H-imidazole-1-ethanol alpha-(2,4-Dichlorophenyl)-1H-imidazole-1-ethanol 24155-42-8 C11H10Cl2N2O
Docosahexaenoic Acid Docosahexaenoic Acid 6217-54-5 C22H32O2
Ketamine hydrochloride Ketamine hydrochloride 1867-66-9 C13H16ClNO.ClH
Chloroauric acid Chloroauric acid 16903-35-8 AuCl4H
2-ACETAMIDO-5-NITROTHIAZOLE 2-ACETAMIDO-5-NITROTHIAZOLE 140-40-9 C5H5N3O3S
2,3-Dichlorotoluene 2,3-Dichlorotoluene 32768-54-0 C7H6Cl2
RONIDAZOLE RONIDAZOLE 7681-76-7 C6H8N4O4
m-Toluidine m-Toluidine 108-44-1 C7H9N
LINSEED OIL LINSEED OIL 8001-26-1
N-Methyl pyrrole N-Methyl pyrrole 96-54-8 C5H7N
trans-4-Isopropylcyclohexane carboxylic acid trans-4-Isopropylcyclohexane carboxylic acid 7077-05-6 C10H18O2
7-Chloro-5-(2-fluoro-phenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one 7-Chloro-5-(2-fluoro-phenyl)-1,3-dihydro-2H-1,4-benzodiazepin-2-one 2886-65-9 C15H10ClFN2O
N-Carbethoxy-4-piperidone N-Carbethoxy-4-piperidone 29976-53-2 C8H13NO3
Naphazoline nitrate Naphazoline nitrate 5144-52-5 C14H15N3O3
Rafoxanide Rafoxanide 22662-39-1 C19H11Cl2I2NO3
METHANOL METHANOL 170082-17-4 CH3OH;CH4O
DL-10-CAMPHORSULFONIC ACID DL-10-CAMPHORSULFONIC ACID 5872-08-2 C10H16O4S
2-Butyl-3-(3,5-Diiodo-4-hydroxy benzoyl) benzofuran 2-Butyl-3-(3,5-Diiodo-4-hydroxy benzoyl) benzofuran 1951-26-4 C19H16I2O3
(1R,2S)-rel-2-(Aminomethyl)-N,N-diethyl-1-phenylcyclopropanecarboxamide hydrochloride (1R,2S)-rel-2-(Aminomethyl)-N,N-diethyl-1-phenylcyclopropanecarboxamide hydrochloride 101152-94-7 C15H23ClN2O
Pleuromulin Pleuromulin 125-65-5 C22H34O5
2-Pyrrolidinone 2-Pyrrolidinone 616-45-5 C4H7NO
OUABAIN OCTAHYDRATE OUABAIN OCTAHYDRATE 11018-89-6 C29H60O20
Fosphenytoin sodium Fosphenytoin sodium 92134-98-0 C16H16N2NaO6P
4-Methylaminophenol sulfate 4-Methylaminophenol sulfate 55-55-0 C7H11NO5S
Pentachloroaniline Pentachloroaniline 527-20-8 C6H2Cl5N
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