KSM'S

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KSM'S API Reference standards and its EP Impurities, USP Impurities, non pharmacopeial Impurities, listed below & also offered custom synthesis for unknown Impurities. If require any contact info@drjcrbio.com, sales@drjcrbio.com

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    Product Name : Tioxolone;6-HYDROXY-1,3-BENZOXATHIOL-2-ONE;Trocinate;ol110;Camyna;Stepin;Acnosan;Thiphen;tioxolon;thidoxol;ioxolone/4991-65-5

    Code: JCKSM-78
    CAS:4991-65-5
    Chemical Formula:C7H4O3S
    Molecular Weight:168.17
    Category: KSM'S/Intermediates
    Literature:
    Application: Tioxolone/4991-65-5 is useful as reference Impurity standard
    Tioxolone;6-HYDROXY-1,3-BENZOXATHIOL-2-ONE;Trocinate;ol110;Camyna;Stepin;Acnosan;Thiphen;tioxolon;thidoxol;ioxolone/4991-65-5
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    Product Name : 2-Amino-3,5-dibromopyrazine;5-dibromo-2-aminopyrazine;3,5-dibromo-2-Pyrazinamine/24241-18-7

    Code: JCKSM-77
    CAS:24241-18-7
    Chemical Formula:C4H3Br2N3
    Molecular Weight:252.89
    Category: KSM'S/Intermediates
    Literature:
    Application: 3,5-dibromo-2-Pyrazinamine/24241-18-7 is useful as reference Impurity standard
    2-Amino-3,5-dibromopyrazine;5-dibromo-2-aminopyrazine;3,5-dibromo-2-Pyrazinamine/24241-18-7
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    Product Name : 2-AMINO-3,5-DICHLOROPYRAZINE;3,5-dichloropyrazin-2-aMine;3,5-Dichloro-pyrazin-2-ylamine/873-42-7

    Code: JCKSM-76
    CAS: 873-42-7
    Chemical Formula:C4H3Cl2N3
    Molecular Weight: 163.99
    Category: KSM'S/Intermediates
    Literature:
    Application: 3,5-Dichloro-pyrazin-2-ylamine/873-42-7 is useful as reference Impurity standard
    2-AMINO-3,5-DICHLOROPYRAZINE;3,5-dichloropyrazin-2-aMine;3,5-Dichloro-pyrazin-2-ylamine/873-42-7
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    Product Name : BROMOPYRAZINAMINE;2-Amino-5-bromopyraz/59489-71-3

    Code: JCKSM-75
    CAS: 59489-71-3
    Chemical Formula: C4H4BrN3
    Molecular Weight: 174.00
    Category: KSM'S/Intermediates
    Literature:
    Application: BROMOPYRAZINAMINE;2-Amino-5-bromopyraz/59489-71-3 is useful as reference Impurity standard
    BROMOPYRAZINAMINE;2-Amino-5-bromopyraz/59489-71-3
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    Product Name : 2-Amino-5-chloropyrazine/33332-29-5

    Code: JCKSM-74
    CAS: 33332-29-5
    Chemical Formula: C4H4ClN3
    Molecular Weight:129.55
    Category: KSM'S/Intermediates
    Literature:
    Application: 2-Amino-5-chloropyrazine/33332-29-5 is useful as reference Impurity standard
    2-Amino-5-chloropyrazine/33332-29-5
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    Product Name : 5-Bromo-1-chloro-2-fluoro-3-nitrobenzene/1435806-75-9

    Code: JCKSM-73
    CAS: 1435806-75-9
    Chemical Formula: C6H2BrClFNO2
    Molecular Weight:254.44
    Category: KSM'S/Intermediates
    Literature:
    Application: 5-Bromo-1-chloro-2-fluoro-3-nitrobenzene/1435806-75-9 is useful as reference Impurity standard
    5-Bromo-1-chloro-2-fluoro-3-nitrobenzene/1435806-75-9
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    Product Name : 1-[(4-Methylphenyl)sulfonyl]-1H-imidazole;Tolylsulfonyl)imidazole;1-(PARA-TOLUENESULPHONYL)IMIDAZOLE/2232-08-8

    Code: JCKSM-72
    CAS:2232-08-8
    Chemical Formula:C10H10N2O2S
    Molecular Weight:222.26
    Category: KSM'S/Intermediates
    Literature:
    Application: 1-[(4-Methylphenyl)sulfonyl]-1H-imidazole;Tolylsulfonyl)imidazole/2232-08-8 is useful as reference Impurity standard
    1-[(4-Methylphenyl)sulfonyl]-1H-imidazole;Tolylsulfonyl)imidazole;1-(PARA-TOLUENESULPHONYL)IMIDAZOLE/2232-08-8
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    Product Name : 4-(2-Amino-1-(1-hydroxycyclohexyl)ethyl)phenol;Desvenlafaxine N,N-Didesmethyl Impurity/149289-29-2

    Code: JCKSM-71
    CAS:149289-29-2
    Chemical Formula: C14H21NO2
    Molecular Weight: 235.3
    Category: KSM'S/Intermediates
    Literature:
    Application: Desvenlafaxine N,N-Didesmethyl Impurity/149289-29-2 is useful as reference Impurity standard
    4-(2-Amino-1-(1-hydroxycyclohexyl)ethyl)phenol;Desvenlafaxine N,N-Didesmethyl Impurity/149289-29-2
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    Product Name : 3-Azidophenol/51642-25-2

    Code: JCKSM-70
    CAS:51642-25-2
    Chemical Formula: C6H5N3O
    Molecular Weight: 135.12
    Category: KSM'S/Intermediates
    Literature:
    Application:3-Azidophenol/51642-25-2 is useful as reference Impurity standard.
    3-Azidophenol/51642-25-2
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    Product Name : 2,2,2-Trifluoro-N’-(2,2,2-trifluoroacetyl)acetohydrazide (CAS: 667-35-6)

    Code: JCKSM-69
    CAS: 667-35-6
    Chemical Formula: C4H2F6N2O2
    Molecular Weight: 224.06
    Category: KSM'S/Intermediates
    Status:  Limited Stock;  Contact: sales@drjcrbio.com
    Application: Manufacturer of 2,2,2-Trifluoro-N’-(2,2,2-trifluoroacetyl)acetohydrazide (CAS: 667-35-6) is useful as reference Impurity standard.
    2,2,2-Trifluoro-N’-(2,2,2-trifluoroacetyl)acetohydrazide (CAS: 667-35-6)
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    Product Name : Trichlormethine Hydrochloride/817-09-4

    Code: JCKSM-68
    CAS:817-09-4,555-77-1(free base)
    Chemical Formula:C6H12Cl3N : HCl
    Molecular Weight: 204.5 : 36.5
    Category: KSM'S/Intermediates
    Literature:
    Application: vortioxetine Reference Standards;Trichlormethine Hydrochloride/817-09-4 is useful as reference Impurity standard.
    Trichlormethine Hydrochloride/817-09-4
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    Product Name : 2-Ethoxyethyl methanesulfonate/ 235097-76-4

    Code: JCKSM-67
    CAS:235097-76-4
    Chemical Formula:C5H12O4S
    Molecular Weight: 168.21
    Category: KSM'S/Intermediates
    Literature:
    Application: 2-Ethoxyethyl methanesulfonate/ 235097-76-4 is useful as reference Impurity standard.
    2-Ethoxyethyl methanesulfonate/ 235097-76-4
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    Product Name : 2-Nitrocinnamic acid/612-41-9

    Code: JCKSM-66
    CAS:612-41-9
    Chemical Formula: C9H7NO4
    Molecular Weight: 193.16
    Category: KSM'S/Intermediates
    Literature:
    Application:2-Nitrocinnamic acid/612-41-9 is useful as reference Impurity standard.
    2-Nitrocinnamic acid/612-41-9
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    Product Name : N-Benzoyl D-Aspartic acid/ 4915-59-7

    Code: JCKSM-65
    CAS:4915-59-7
    Chemical Formula: C11H11NO5
    Molecular Weight: 237.21
    Category: KSM'S/Intermediates
    Literature:
    Application: 2-benzamidobutanedioic acid/4915-59-7 is useful as reference Impurity standard.
    N-Benzoyl D-Aspartic acid/ 4915-59-7
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    Product Name : Darifenacin 5-Carboxymethyl Impurity/69999-16-2

    Code: JCKSM-64
    CAS:69999-16-2
    Chemical Formula: C10H10O3
    Molecular Weight: 178.2
    Category: KSM'S/Intermediates
    Literature:
    Application: Darifenacin 5-Carboxymethyl Impurity/69999-16-2 is useful as reference Impurity standard.
    Darifenacin 5-Carboxymethyl Impurity/69999-16-2
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    Product Name : Ethyl 3,5-dimethyl-1H-pyrrole-2-carboxylate/2199-44-2

    Code: JCKSM-63
    CAS:2199-44-2
    Chemical Formula: C9H13NO2
    Molecular Weight: 167.21
    Category: KSM'S/Intermediates
    Literature:
    Application: Ethyl 3,5-dimethyl-1H-pyrrole-2-carboxylate/2199-44-2 is useful as reference Impurity standard.
    Ethyl 3,5-dimethyl-1H-pyrrole-2-carboxylate/2199-44-2
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    Product Name : 4-Chloro-2-acetylthiophene/34730-20-6

    Code: JCKSM-62
    CAS:34730-20-6
    Chemical Formula: C6H5ClOS
    Molecular Weight: 160.62
    Category: KSM'S/Intermediates
    Literature:
    Application: 4-Chloro-2-acetylthiophene/34730-20-6 is useful as reference Impurity standard.
    4-Chloro-2-acetylthiophene/34730-20-6
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    Product Name : 2-Fluoro-5-nitrobenzonitrile/17417-09-3

    Code:  JCKSM-59
    CAS:17417-09-3
    Chemical Formula:C7H3FN2O2
    Molecular Weight:166.11
    Category: KSM'S/Intermediates
    Literature:
    Application: 2-Fluoro-5-nitrobenzonitrile/17417-09-3 is useful as reference Impurity standard.
    2-Fluoro-5-nitrobenzonitrile/17417-09-3
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    Product Name : Diethyl (hydroxyimino)malonate/6829-41-0

    Code:  JCKSM-58
    CAS:6829-41-0
    Chemical Formula:C7H11NO5
    Molecular Weight:189.17
    Category: KSM'S/Intermediates
    Literature:
    Application: Diethyl (hydroxyimino)malonate/6829-41-0 is useful as reference Impurity standard.
    Diethyl (hydroxyimino)malonate/6829-41-0
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    Product Name : N-Formyl Nebivolol

    Code: JCNBV-39
    CAS: NA
    Chemical Formula: C23H25F2NO5
    Molecular Weight:433.5
    Category: Nebivolol Reference Standards/ Nebivolol API Drug Metabolites/Nebivolol EP Impurities/Nebivolol USP Impurities
    Literature:
    Application: N-Formyl Nebivolol is useful as reference Impurity standard
    N-Formyl Nebivolol
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    Product Name : 5-Amino-2-fluorobenzonitrile/53312-81-5

    Code:   BB1477
    CAS: 53312-81-5
    Chemical Formula:C7H5FN2
    Molecular Weight:136.13
    Category: Building blocks
    Literature:
    Application: 5-Amino-2-fluorobenzonitrile/53312-81-5 is useful as reference Impurity standard.  Note: The compounds strictly supplied only for R&D /AR&D purpose, not for human/animal consumption.
    5-Amino-2-fluorobenzonitrile/53312-81-5
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    Product Name : Methyl 2-hydroxy-3-methylbutanoate/24347-63-5

    Code:  JCKSM-57
    CAS: 24347-63-5
    Chemical Formula: C6H12O3
    Molecular Weight: 132.16
    Category: KSM'S/Intermediates
    Literature:
    Application: Methyl 2-hydroxy-3-methylbutanoate/24347-63-5 is useful as reference Impurity standard.
    Methyl 2-hydroxy-3-methylbutanoate/24347-63-5
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    Product Name : (S)-2-Hydroxy-3-methylbutanoic acid/17407-55-5

    Code:  JCKSM-56
    CAS: 17407-55-5
    Chemical Formula: C5H10O3
    Molecular Weight: 118.13
    Category: KSM'S/Intermediates
    Literature:
    Application: (S)-2-Hydroxy-3-methylbutanoic acid/17407-55-5 is useful as reference Impurity standard.
    (S)-2-Hydroxy-3-methylbutanoic acid/17407-55-5
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    Product Name : 2-Aminoethyl Hydrogen Sulfate/926-39-6

    Code:  JCKSM-55
    CAS: 926-39-6
    Chemical Formula:C2H7NO4S
    Molecular Weight: 141.14 
    Category: KSM'S/Intermediates
    Literature:
    Application: 2-Aminoethyl Hydrogen Sulfate/926-39-6 is useful as reference Impurity standard.
    2-Aminoethyl Hydrogen Sulfate/926-39-6
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    Product Name : Ethanol, 2-[2-(2-hydroxyethoxy)ethoxy]-, 1-(4-Methylbenzenesulfonate)/77544-68-4

    Code:  JCKSM-54
    CAS: 77544-68-4
    Chemical Formula:C13H20O6S
    Molecular Weight:304.36
    Category: KSM'S/Intermediates
    Literature:
    Application: Ethanol, 2-[2-(2-hydroxyethoxy)ethoxy]-, 1-(4-Methylbenzenesulfonate)/77544-68-4 is useful as reference Impurity standard.
    Ethanol, 2-[2-(2-hydroxyethoxy)ethoxy]-, 1-(4-Methylbenzenesulfonate)/77544-68-4
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    Product Name : DIBUTYL PHTHALATE | 84-74-2

    Code:  JCKSM-53
    CAS: 84-74-2
    Chemical Formula:C16H22O4
    Molecular Weight:278.35
    Category: KSM'S/Intermediates
    Literature:
    Application:   DIBUTYL PHTHALATE | 84-74-2is useful as reference Impurity standard.
    DIBUTYL PHTHALATE | 84-74-2
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    Product Name : Dibutyl isophthalate /3126-90-7

    Code: JCKSM-52
    CAS:3126-90-7
    Chemical Formula: C16H22O4
    Molecular Weight:  278.34
    Category: KSM'S/Intermediates
    Synonyms: Dibutyl isophthalate /3126-90-7
    Application: Dibutyl isophthalate  /3126-90-7CRO, CDMO's, further
    Dibutyl isophthalate /3126-90-7
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    Product Name : Dibutyl Terephthalate/1962-75-0

    Code:  JCKSM-51
    CAS: 1962-75-0
    Chemical Formula: C16H22O4
    Molecular Weight:  278.35
    Category: KSM'S/Intermediates
    Synonyms: Dibutyl Terephthalate/1962-75-0
    Application: Dibutyl Terephthalate/1962-75-0 CRO, CDMO's, further
    Dibutyl Terephthalate/1962-75-0
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    Product Name : Dapagliflozin Impurity 40; 1-Ethoxy-2-ethylbenzene / 29643-62-7

    Code: JCKSM-50
    CAS:29643-62-7
    Chemical Formula: C10H14O
    Molecular Weight: 150.2
    Category: KSM'S/Intermediates
    Literature:
    Application: Dapagliflozin Impurity 40;Ethoxy-2-ethylbenzene/29643-62-7 is useful as reference Impurity standard.
    Dapagliflozin Impurity 40; 1-Ethoxy-2-ethylbenzene / 29643-62-7
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    Product Name : Butanedioic acid;33109-58-9

    Code: JCKSM-49
    CAS: 33109-58-9
    Chemical Formula:C16H12N2O8
    Molecular Weight:360.28
    Category: KSM'S/Intermediates
    Literature:
    Application: Bis-(4-nitrophenyl)succinate;Butanedioic acid, 1,4-bis(4-nitrophenyl) ester;33109-58-9 is useful as reference Impurity standard.
    Butanedioic acid;33109-58-9
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    Product Name : 1-Bromo-4-phenyl-2-butanone|31984-10-8

    Code: JCKSM-48
    CAS: 31984-10-8
    Chemical Formula:C10H11BrO
    Molecular Weight:227.1
    Category: KSM'S/Intermediates
    Literature:
    Application:  1-Bromo-4-phenyl-2-butanone|31984-10-8 is useful as reference Impurity standard.
    1-Bromo-4-phenyl-2-butanone|31984-10-8
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    Product Name : 2’, 3’, 4’-Trimethoxy acetophenone|13909-73-4

    Code: JCKSM-47
    CAS: 13909-73-4
    Chemical Formula:C11H14O4
    Molecular Weight:210.23
    Category: KSM'S/Intermediates
    Literature:
    Application:  2’, 3’, 4’-Trimethoxy acetophenone|13909-73-4 is useful as reference Impurity standard.
    2’, 3’, 4’-Trimethoxy acetophenone|13909-73-4
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    Product Name : 2’, 4’, 6’-Trimethoxyacetophenone|832-58-6

    Code: JCKSM-46
    CAS: 832-58-6
    Chemical Formula:C11H14O4
    Molecular Weight:210.23
    Category: KSM'S/Intermediates
    Literature:
    Application:  2’, 4’, 6’-Trimethoxyacetophenone|832-58-6 is useful as reference Impurity standard.
    2’, 4’, 6’-Trimethoxyacetophenone|832-58-6
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