午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

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 CAS MF
ethyl N-[(2,5-dichlorophenyl)carbonyl]glycinate ethyl N-[(2,5-dichlorophenyl)carbonyl]glycinate 328283-61-0 C11H11Cl2NO3
Irbesartan Impurity 4 Irbesartan Impurity 4 945540-26-1 C21H20N6O
BAUCJPGULMYPTE-UHFFFAOYSA-N BAUCJPGULMYPTE-UHFFFAOYSA-N 2097683-67-3 C24H29NO4
Entecavir Impurity 6 Entecavir Impurity 6 1354695-82-1 C26H27N5O3
Bis(L-Valine) Ester Ganciclovir TFA Salt Bis(L-Valine) Ester Ganciclovir TFA Salt 130914-71-5 C19H31N7O6
2-Hexenoic acid, 2-cyano-5-methyl- 2-Hexenoic acid, 2-cyano-5-methyl- 869-02-3 C8H11NO2
CP-690550A CP-690550A 1243290-37-0 C15H21N5O2
(S)-Tomoxetine (S)-Tomoxetine 105314-53-2 C17H21NO
Fexofenadine EP Impurity F Fexofenadine EP Impurity F 185066-33-5 C31H37NO4
2-Propanone, 1,3-bis(4-methoxyphenyl)- 2-Propanone, 1,3-bis(4-methoxyphenyl)- 29903-09-1 C17H18O3
1,3-bis(2-chloroethyl)benzimidazolin-2-one 1,3-bis(2-chloroethyl)benzimidazolin-2-one 55470-74-1 C11H12Cl2N2O
Nintedanib Impurity A (Intedanib Impurity A ) Nintedanib Impurity A (Intedanib Impurity A )
(E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine (E)-2-(7-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethan-1-amine 468104-18-9 C13H17NO
4-(5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl)picolinamide 4-(5-(pyridin-4-yl)-1H-1,2,4-triazol-3-yl)picolinamide 1992028-94-0 C13H10N6O
Indacaterol Impurity 22 Indacaterol Impurity 22 773895-24-2 C31H34N2O3
10-O-2,2-Dichloroethoxycarbonyl Docetaxe 10-O-2,2-Dichloroethoxycarbonyl Docetaxe 158810-73-2 C46H55Cl2NO16
4R,5S)-2,4-diphenyl-4,5-dihydrooxazole-5-carboxylic acid 4R,5S)-2,4-diphenyl-4,5-dihydrooxazole-5-carboxylic acid 849831-77-2 C16H13NO3
Cefathiamidine Impurity D Cefathiamidine Impurity D
1-[(4-Ethoxy-3-formylphenyl)sulfonyl]-4-methylpiperazine 1-[(4-Ethoxy-3-formylphenyl)sulfonyl]-4-methylpiperazine 332374-42-2 C14H20N2O4S
4-(3,4-DICHLOROPHENYL)-3,4-DIHYDRO-2H-NAPHTHALEN-1-ONE OXIME 4-(3,4-DICHLOROPHENYL)-3,4-DIHYDRO-2H-NAPHTHALEN-1-ONE OXIME 152642-35-8 C16H13Cl2NO
Afatinib Impurity M Afatinib Impurity M
Ornidazole  Impurity Ornidazole Impurity 1100750-18-2
4-(3-nitrophenyl)-3-Morpholinone 4-(3-nitrophenyl)-3-Morpholinone 845729-43-3 C10H10N2O4
PDXA-226 PDXA-226 352637-51-5 C14H14N2O
Ropivacaine-ET-R Ropivacaine-ET-R 98626-60-9 C16H24N2O
Ropivacaine-iPr-S Ropivacaine-iPr-S 265120-58-9 C17H26N2O
(S)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-3-yl)propan-1-amine (S)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-3-yl)propan-1-amine 1384080-33-4 C19H21NOS
methyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate methyl 4-(5-methyl-3-phenylisoxazol-4-yl)benzenesulfonate C17H15NO4S
Apremilast impurity 15 Apremilast impurity 15
Aprepitant Impurity 22 Aprepitant Impurity 22 934540-48-4 C20H16F7NO2
Aprepitant Impurity 9 Aprepitant Impurity 9 219821-37-1 C24H25F7N4O4
Betamethasone EP Impurity I Betamethasone EP Impurity I 185613-69-8 C22H29FO5
Canagliflozin Impurity 14 Canagliflozin Impurity 14 842133-17-9 C24H25FO5S
Carfilzomib Impurity F Carfilzomib Impurity F
Cefamandole Impurity A Cefamandole Impurity A 1947364-12-6 C17H16N2O6S
Dapagliflozin Impurity 19 Dapagliflozin Impurity 19 1469910-84-6 C29H33ClO10
Docetaxel EP Impurity A Docetaxel EP Impurity A
Cefazolin Impurity C (EP) Cefazolin Impurity C (EP)
Cefdinir Impurity H (CP) Cefdinir Impurity H (CP)
Cefdinir Impurity S(CP) Cefdinir Impurity S(CP)
Cefodizime oxidation Impurity 1 Cefodizime oxidation Impurity 1 111874-11-4 C20H20N6O7S4
Spectinomycin Impurity F Spectinomycin Impurity F
(7S,8R)-3-[2-(tert-butylamino)acetamido]-7-[[4-carbamoyl-2-(dimethylamino)-3,5,6-trihydroxyphenyl]methyl]-6-carboxy-5,8-dihydroxy-N,N-dimethyl-4-oxo-7,8-dihydronaphthalen-1(4H)-iminium (7S,8R)-3-[2-(tert-butylamino)acetamido]-7-[[4-carbamoyl-2-(dimethylamino)-3,5,6-trihydroxyphenyl]methyl]-6-carboxy-5,8-dihydroxy-N,N-dimethyl-4-oxo-7,8-dihydronaphthalen-1(4H)-iminium C29H38N5O10+
3-pentylisobenzofuran-1(3H)-one 3-pentylisobenzofuran-1(3H)-one 111943-62-5 C13H16O2
2-[[2-2(2-Amino-4-thiazolyl)acetyl]amino]-4-thiazoleacetic Acid 2-[[2-2(2-Amino-4-thiazolyl)acetyl]amino]-4-thiazoleacetic Acid 2036283-13-1 C10H10N4O3S2
Levofloxacin Impurity 18 Levofloxacin Impurity 18 138998-47-7 C14H13F4NO3
N-(5-amino-2-methylphenyl)-N-(4-(pyridin-3-yl)pyrimidin-2-yl)acetamide compound with methane (1:1) N-(5-amino-2-methylphenyl)-N-(4-(pyridin-3-yl)pyrimidin-2-yl)acetamide compound with methane (1:1)
N-(2-methyl-5-(methylamino)phenyl)-N-(4-(pyridin-3-yl)pyrimidin-2-yl)formamide N-(2-methyl-5-(methylamino)phenyl)-N-(4-(pyridin-3-yl)pyrimidin-2-yl)formamide C18H17N5O
methyl3-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin -4-yl)amino)piperidin-1-yl)-3-oxopropanoate methyl3-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin -4-yl)amino)piperidin-1-yl)-3-oxopropanoate 1616761-01-3 C17H23N5O3
Labetalol iMpurity Labetalol iMpurity 2731858-23-2
ZXANKCFSGFEBQW-PFEQFJNWSA-N ZXANKCFSGFEBQW-PFEQFJNWSA-N 1258938-54-3
TWEORVZIMOFLDE-MXTNKPTQSA-N TWEORVZIMOFLDE-MXTNKPTQSA-N 1706671-50-2 C25H31N5O9S
WGEFOIHAXGTXJE-RTMVWDMESA-N WGEFOIHAXGTXJE-RTMVWDMESA-N 1373171-12-0 C48H61NO14
ZIMIAPVHHUISPY-CLFYSBASSA-N ZIMIAPVHHUISPY-CLFYSBASSA-N 866954-86-1 C15H15F3O5
Empagliflozin Impurity 21 Empagliflozin Impurity 21
Febuxostat Impurity 43 Febuxostat Impurity 43
Formoterol Impurity 20 Formoterol Impurity 20
Hydroxychloroquine Impurity 2 Hydroxychloroquine Impurity 2
Ibrutinib Impurity 14 Ibrutinib Impurity 14 2417548-76-4 C50H48N12O4
Imatinib impurity 11 Imatinib impurity 11
Isavuconazole Impurity 2 Isavuconazole Impurity 2 2001051-99-4 C13H12F2N4O
Isavuconazole Impurity 25 Isavuconazole Impurity 25
Loxoprofen Impurity 18 Loxoprofen Impurity 18 99807-54-2 C11H13BrO2
Mupirocin EP Impurity D Mupirocin EP Impurity D 71087-97-3 C26H44O9
N-Acetyl-Lys-Octreotide N-Acetyl-Lys-Octreotide 173606-11-6 C51H68N10O11S2
Olaparib Impurity 3 Olaparib Impurity 3
Posaconazole Impurity 33 Posaconazole Impurity 33 182210-71-5 C12H13F2IO2
Posaconazole Impurity 38 Posaconazole Impurity 38
Posaconazole Impurity 62 Posaconazole Impurity 62
Roxithromycin Impurity J Roxithromycin Impurity J
Sitagliptin Impurity 21 Sitagliptin Impurity 21 2088771-60-0 C20H19F6N5O5
SofosBuvir Impurity 38 SofosBuvir Impurity 38
SofosBuvir Impurity 61 SofosBuvir Impurity 61
Suvorexant Impurity 2 Suvorexant Impurity 2 1276666-19-3 C23H23ClN6O2
Tenofovir impurity L Tenofovir impurity L
Ticagrelor Impurity 27 Ticagrelor Impurity 27 1402150-01-9 C19H26ClN5O5S
Ticagrelor impurity P Ticagrelor impurity P
Tramadol Impurity 1 Tramadol Impurity 1 66170-32-9 C16H25NO2
Lidocaine EP Impurity G Lidocaine EP Impurity G 42459-30-3 C13H20N2O
methyl 1,4-dihydroxy-7-phenoxyisoquinoline-3-carboxylate methyl 1,4-dihydroxy-7-phenoxyisoquinoline-3-carboxylate 1421312-32-4 C17H13NO5
1-(2,3-DIMETHYLPHENYL)PROPAN-1-OL 1-(2,3-DIMETHYLPHENYL)PROPAN-1-OL 944268-64-8 C11H16O
4-(4-chlorophenyl)-5-methyl-3-phenylisoxazole 4-(4-chlorophenyl)-5-methyl-3-phenylisoxazole 1448355-87-0 C16H12ClNO
Enrofloxacin EP Impurity C Enrofloxacin EP Impurity C 138892-82-7 C19H23N3O3
Pregabalin Lactam (S)-Isomer Lactose Adduct Pregabalin Lactam (S)-Isomer Lactose Adduct 466678-44-4 C20H35NO11
Ertapenem Impurity Pro-maba Ertapenem Impurity Pro-maba 724700-26-9 C12H14N2O3
Empagliflozin Impurity 22 Empagliflozin Impurity 22
Empagliflozin Impurity 35 Empagliflozin Impurity 35 1459754-40-5 C13H8ClIO2
tirofiban tirofiban 464175-13-1 C9H18ClN
1,8-bis(4-((1,4,8,11-tetraazacyclotetradecan-4,8,11-trifluoroacetyl- 1-yl)methyl)benzyl)-4,11-difluoroacetyl-1,4,8,11- tetraazacyclotetradecane 1,8-bis(4-((1,4,8,11-tetraazacyclotetradecan-4,8,11-trifluoroacetyl- 1-yl)methyl)benzyl)-4,11-difluoroacetyl-1,4,8,11- tetraazacyclotetradecane
Fulvestrant Impurity 4 Fulvestrant Impurity 4 1621885-82-2 C30H44O6S
Clopidogrel Clopidogrel 1360923-54-1 C16H16ClNO3S
Ozagrel-015 Ozagrel-015 1332370-00-9 C10H10O3
Piperacillin Sulfoxide Piperacillin Sulfoxide 67275-27-8 C23H27N5O8S
Budesonide Impurity 11 Budesonide Impurity 11 39672-76-9 C21H26O5
1,8-bis(4-((1,4,8,11-tetraazacyclotetradecan-1-yl)methyl) benzyl)-1,4,8,11-tetraazacyclotetradecane dodecahydrochloride 1,8-bis(4-((1,4,8,11-tetraazacyclotetradecan-1-yl)methyl) benzyl)-1,4,8,11-tetraazacyclotetradecane dodecahydrochloride 2173049-85-7 C46H85ClN12
Mirabegron Impurity 26 Mirabegron Impurity 26 91828-74-9 C8H9N3O4
Alosetron Impurity 1 Alosetron Impurity 1 1011293-30-3 C17H16N4O2
2-(3-cyano-4-isobutoxyphenyl)-N,N,4-trimethylthiazole-5- carboxamide 2-(3-cyano-4-isobutoxyphenyl)-N,N,4-trimethylthiazole-5- carboxamide 1380049-45-5 C18H21N3O2S
Acarbose Impurity F Acarbose Impurity F
Oseltamivir  Impurity 10 Oseltamivir Impurity 10 2081110-43-0 C16H28N2O4
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.