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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Structure:
Chemical Name:
Ticarcillin SodiuM IMpurity A
CAS:
36041-93-7
MF:
C14H16N2O4S2
Structure:
Chemical Name:
R-afatinib
CAS:
945553-91-3
MF:
C24H25ClFN5O3
Structure:
Chemical Name:
EthanediaMide iMpurity E
MF:
C2H4N2O2
Structure:
Chemical Name:
N-DesMethyl SuMatriptan
CAS:
88919-51-1
MF:
C13H19N3O2S
Structure:
Chemical Name:
2-epi-(-)-EMtricitabine
CAS:
145416-34-8
MF:
C8H10FN3O3S
Structure:
Chemical Name:
Triamterene Related Compound B (50 mg) (2,7-diamino-4-hydroxy-6-phenylpteridine)
CAS:
19375-89-4
MF:
C12H10N6O
Structure:
Chemical Name:
6-(2,5-dichlorophenyl)-1,3,5-Triazine-2,4(1H,3H)-dione
CAS:
30222-00-5
MF:
C9H5Cl2N3O2
Structure:
Chemical Name:
(2'R)-2'-Deoxy-2'-fluoro-2'-Methyl-uridine 3',5'-dibenzoate
CAS:
863329-65-1
MF:
C24H21FN2O7
Chemical Name:
Anastrozole iMpurityC
Chemical Name:
Celecoxib iMpurity-A
Chemical Name:
EMtricitabine iMpurity A
Chemical Name:
RocuroniuMbroMide iMpurity D
Chemical Name:
Ondansetron Impurity B
Structure:
Chemical Name:
LeflunoMide EP IMpurity F
CAS:
1403564-06-6
MF:
C12H9F3N2O2
Chemical Name:
4'-((1,7'-dimethyl-2'-propyl-1H,1'H-2,5'-bibenzo[d]imidazol-1'-yl)methyl)biphenyl-2-carboxylic acid
Chemical Name:
Itraconazole iMpurity D
Structure:
Chemical Name:
3-amino-2-chloroacrolein
CAS:
221615-73-2
MF:
C3H4ClNO
Structure:
Chemical Name:
3-Amino-4-pyrazolecarbonitrile
CAS:
16617-46-2
MF:
C4H4N4
Structure:
Chemical Name:
BenzaMide, 3,4-bis(cyclopropylMethoxy)-N-(3,5-dichloro-4-pyridinyl)-
CAS:
1391052-24-6
MF:
C20H20Cl2N2O3
Structure:
Chemical Name:
4-ISOBUTYRYLACETOPHENONE
CAS:
103931-20-0
MF:
C12H14O2
Structure:
Chemical Name:
ButanaMide, 4-hydroxy-N-(1-Methylethyl)-
CAS:
42042-66-0
MF:
C7H15NO2
Structure:
Chemical Name:
5H-chroMeno[2,3-b]pyridin-7-ylacetic acid
CAS:
52549-07-2
MF:
C14H11NO3
Structure:
Chemical Name:
Methyl (1-benzyl-4-Methylpiperidin-3-yl)carbaMate
CAS:
1206875-41-3
MF:
C15H22N2O2
Structure:
Chemical Name:
S-(-)-[1-(3-Methoxyphenyl)ethyl]-N,N-diMethylaMine
CAS:
889443-69-0
MF:
C11H17NO
Structure:
Chemical Name:
N-(4-aMinophenyl)-2-chloro-N-MethylacetaMide
CAS:
855860-75-2
MF:
C9H11ClN2O
Structure:
Chemical Name:
Ibrutinib iMpurity
CAS:
936351-48-3
MF:
C12H13ClN2O
Structure:
Chemical Name:
1-Phenyl-5-(pyridin-2-yl)-1,2-dihydropyridin-2-one
CAS:
381725-50-4
MF:
C16H12N2O
Structure:
Chemical Name:
Abacavir Impurity E
CAS:
208762-35-0
MF:
C14H20N6O
Structure:
Chemical Name:
(1R,5S,6R)-rel-5-(1-Ethylpropoxy)-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic Acid Ethyl Ester
CAS:
347378-74-9
MF:
C14H22O4
Structure:
Chemical Name:
(3R,5R,6E)-7-[2-Cyclopropyl-4-(4-fluorophenyl)-3-quinolinyl]-3,5-dihydroxy-6-heptenoic Acid CalciuM Salt
CAS:
254452-96-5
MF:
C25H24FNO4
Structure:
Chemical Name:
(αZ)-α-(MethoxyiMino)-N-[(5aR,6R)-1,4,5a,6-tetrahydro-1,7-dioxo-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl]-2-furanacetaMide
CAS:
947723-87-7
MF:
C15H13N3O6S
Structure:
Chemical Name:
1-[[2-[(2-AMinophenyl)aMino]-5-Methyl-3-thienyl]carbonyl]-4-Methyl-piperazine
CAS:
138564-61-1
MF:
C17H22N4OS
Structure:
Chemical Name:
1-Cyclopropyl-6,7-difluoro-1,4-dihydro-8-hydroxy-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester
CAS:
452092-31-8
MF:
C15H13F2NO4
Structure:
Chemical Name:
2-(IsopropylaMino)-2',6'-acetoxylidide Hydrochloride
CAS:
35891-87-3
MF:
C13H21ClN2O
Structure:
Chemical Name:
2,2'-IMinobis(N-(2,6-DiMethylphenyl)acetiaMide Hydrochloride
CAS:
1135231-62-7
MF:
C20H26ClN3O2
Structure:
Chemical Name:
3,4-O-(DiethylMethylidene) ShikiMic Acid Ethyl Ester
CAS:
943515-58-0
MF:
C14H22O5
Structure:
Chemical Name:
4-Hydroxy-α1-[[[6-(2-phenylethoxy)hexyl]aMino]Methyl]-1,3-benzenediMethanol
CAS:
94749-02-7
MF:
C23H33NO4
Structure:
Chemical Name:
5-[2-Ethoxy-5-[(4-Methyl-1-piperazinyl)thioxoMethyl]phenyl]-1,6-dihydro-1-Methyl-3-propyl-7H-pyrazolo[4,3-d]pyriMidine-7-thione
CAS:
1333233-46-7
MF:
C23H30N6OS2
Structure:
Chemical Name:
BIRG 613 BS
CAS:
287980-85-2
MF:
C15H16N4O
Structure:
Chemical Name:
4-Nitrophenyl 5-chlorothiophene-2-carboxylate
CAS:
1450877-56-1
MF:
C11H6ClNO4S
Chemical Name:
Olaparib iMpurity B
Structure:
Chemical Name:
Posaconazole iMpurity 6
CAS:
2185472-85-7
MF:
C30H35N5O3
Chemical Name:
Everolimus Isomer C
Structure:
Chemical Name:
3-Deschloro-4-Desfluoro-4-Chloro-3-Fluorogefitinib
CAS:
1603814-04-5
MF:
C22H24ClFN4O3
Structure:
Chemical Name:
Brivaracetam (Racemate)
CAS:
357335-87-6
MF:
C11H20N2O2
Structure:
Chemical Name:
Donepezil Impurity 2
CAS:
36517-91-6
MF:
C11H10O4
Structure:
Chemical Name:
Fesoterodine Related Impurity 2
CAS:
1254942-29-4
MF:
C30H39NO6
Structure:
Chemical Name:
Prasugrel Impurity 13 HCl
CAS:
1618108-01-2
MF:
C18H19ClFNOS
Structure:
Chemical Name:
Ticagrelor Related Compound 5
CAS:
1414348-35-8
MF:
C9H9F2N
Structure:
Chemical Name:
Vortioxetine Impurity 2
CAS:
1293489-69-6
MF:
C17H20N2S
Structure:
Chemical Name:
Chrysin 6-C-arabinoside 8-C-glucoside
CAS:
185145-33-9
MF:
C26H28O13
Structure:
Chemical Name:
Meloside A
CAS:
60767-80-8
MF:
C27H30O15
Structure:
Chemical Name:
ACETIC ACID 2-METHOXY-4-(5-OXO-2-PHENYL-OXAZOL-4-YLIDENEMETHYL)-PHENYL ESTER
CAS:
18692-68-7
MF:
C19H15NO5
Structure:
Chemical Name:
1,4-di(benzo[b]thiophen-4-yl)piperazine
CAS:
1420987-86-5
MF:
C20H18N2S2
Structure:
Chemical Name:
3',5'-Dimethoxytricetin 7-O-β-D-glucopypranoside
CAS:
32769-01-0
MF:
C23H24O12
Chemical Name:
IMp. B (EP): (2RS,4S)-2-[[[[3-(2-Chloro-6-fluorophenyl)-5-Methylisoxazol-4-yl]carbonyl]aMino]Methyl]-5,5-diMethyl- thiazolidine-4-carboxylic Acid (Penilloic Acids of Flucloxacillin)
Structure:
Chemical Name:
IMp. C (EP): (4-(DiphenylMethyl)-1,1-bis[(E)-3-phenylprop-2-enyl]piperaziniuM Chloride
CAS:
95062-18-3
MF:
C35H35ClF2N2
Chemical Name:
IMp. E (EP): 4-AMino-5-(ethylsulphonyl)-2-Methoxybenzoic Acid
Structure:
Chemical Name:
3,5-DiMethyl-1-nitroadaMantane
CAS:
6588-68-7
MF:
C12H19NO2
Structure:
Chemical Name:
2-Deschloro Aripiprazole
CAS:
203395-82-8
MF:
C23H28ClN3O2
Structure:
Chemical Name:
6-O-Benzyl-4-dehydroxy-4-diMethylphenylsilyl Entecavir
CAS:
649761-24-0
MF:
C27H31N5O2Si
Structure:
Chemical Name:
Desisobutyl-n-butyl BortezoMib
CAS:
1104011-35-9
MF:
C19H25BN4O4
Structure:
Chemical Name:
2-aMino-4-Methoxy-5-(3-Morpholinopropoxy)benzaMide
CAS:
246512-44-7
MF:
C15H23N3O4
Structure:
Chemical Name:
N-(4,6-dichloro-2-(propylthio)pyriMidin-5-yl)forMaMide
CAS:
1402150-28-0
MF:
C8H9Cl2N3OS
Structure:
Chemical Name:
Ebastine IMpurity G
CAS:
1429071-65-7
MF:
C32H39NO3
Structure:
Chemical Name:
Deferasirox Salicyloyl Ester
CAS:
1395346-28-7
MF:
C28H19N3O6
Structure:
Chemical Name:
N-2-Hydroxy-3-[[2-(Methoxyphenoxy)ethyl]aMine Carvedilol
CAS:
1198090-73-1
MF:
C36H43N3O7
Structure:
Chemical Name:
N-[2-[1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl]acetamide
CAS:
253168-86-4
MF:
C22H24N2O7S
Structure:
Chemical Name:
N-[2-[1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl]acetamide
CAS:
253168-86-4
MF:
C22H24N2O7S
Structure:
Chemical Name:
N-[2-[1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl]acetamide
CAS:
253168-86-4
MF:
C22H24N2O7S
Chemical Name:
Ticagrelor IMpurity B
Structure:
Chemical Name:
AtracuriuM IMpurity V
CAS:
1075726-86-1
MF:
C25H34INO6
Chemical Name:
Avanafil iMpurity 3
Structure:
Chemical Name:
CitalopraM carboxylic acid iMpurity
CAS:
440121-09-5
MF:
C20H22FNO3
Structure:
Chemical Name:
Decitabine iMpurity 6
CAS:
178671-74-4
MF:
C7H14N4O4
Structure:
Chemical Name:
DiazepaM IMpurity E
CAS:
20927-53-1
MF:
C15H11ClN2O
Structure:
Chemical Name:
ErtapeneM Side Chain EnantioMer 2 HCl
CAS:
503607-49-6
MF:
C12H15ClN2O3S
Chemical Name:
Ribavirin IMpurity G
Structure:
Chemical Name:
Ethanone, 1-(2,5-difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)- 1-(2,5-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone,1-(2,5-difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone
CAS:
1157938-97-0
MF:
C10H7F2N3O
Structure:
Chemical Name:
3-Fluoro-4-phenylphenol
CAS:
477860-13-2
MF:
C12H9FO
Structure:
Chemical Name:
Heptyl Deoctyl FingoliMod Hydrochloride
CAS:
162361-44-6
MF:
C18H32ClNO2
Structure:
Chemical Name:
4-Methoxy-3,5-diMethylpyridine 1-Oxide
CAS:
91219-89-5
MF:
C8H11NO2
Structure:
Chemical Name:
N-Ethyl-3-buteno-o-toluidide
CAS:
13936-71-5
MF:
C13H17NO
Structure:
Chemical Name:
Pramipexole Impurity 21
CAS:
104617-86-9
MF:
C10H17N3S
Structure:
Chemical Name:
Tigecycline Pentacyclic Analog
CAS:
1268494-40-1
MF:
C27H32N4O9
Structure:
Chemical Name:
Tigecycline (open C-ring D-ring) Quinone
CAS:
1268494-46-7
MF:
C26H32N4O8
Structure:
Chemical Name:
5-Chloro AcesulfaMe
CAS:
72827-08-8
MF:
C4H4ClNO4S
Chemical Name:
Pazopanib iMpurity
Structure:
Chemical Name:
Acetic acid, 2-[2-[2-[4-[(4- chlorophenyl)phenylMethyl]-1-piperazinyl]ethoxy]ethoxy]-
CAS:
682323-77-9
MF:
C23H29ClN2O4
Chemical Name:
edaravone iMpurity
Structure:
Chemical Name:
(2R,3R,4R,5S,6R)-2-(3-((5-(4-fluorophenyl)thiophen-2-yl)Methyl)-4-Methylphenyl)-6-(hydroxyMethyl)tetrahydro-2H-pyran-3,4,5-triol
MF:
C24H25FO5S
Structure:
Chemical Name:
Androst-16-en-3-ol, 17-(3-pyridinyl)-, acetate (ester),(3β,5α)-
CAS:
219843-76-2
MF:
C26H35NO2
Structure:
Chemical Name:
5-(4-fluorophenyl)-1H-pyrrole-3-carbaldehyde
MF:
C11H8FNO
Structure:
Chemical Name:
Ganciclovir EP Impurity H
CAS:
84222-50-4
MF:
C9H13N5O4
Structure:
Chemical Name:
2-[4-[(1E)-1,2-Diphenylethenyl]phenoxy]-N,N-dimethylethanamine
CAS:
97151-10-5
MF:
C24H25NO
Structure:
Chemical Name:
[S-(R*,R*)]-3,3'-Dithiobis[2-methylpropanoic acid]
CAS:
65134-74-9
MF:
C8H14O4S2
Structure:
Chemical Name:
(E)-1-(4-(2-Methyl-10H-benzo[b]thieno[2,3-e][1,4]diazepin-4-yl)piperazin-1-yl)ethanone
CAS:
935272-10-9
MF:
C18H20N4OS
Structure:
Chemical Name:
2-(thiophen-3-yl)ethyl 4-methylbenzenesulfonate
CAS:
40412-09-7
MF:
C13H14O3S2
Structure:
Chemical Name:
(S)-2-(2-(5-chloro-N-(4-(5-((5-chlorothiophene-2-carboxamido)methyl)-2-oxooxazolidin-3-yl)phenyl)thiophene-2-carboxamido)ethoxy)acetic acid
CAS:
1151893-81-0
MF:
C24H21Cl2N3O7S2
Structure:
Chemical Name:
Cilastatin ammonium salt
CAS:
877674-82-3
MF:
C16H29N3O5S