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 : Quinoxaline (CAS: 91-19-0)

    Code: JCKSM-306
    CAS:  91-19-0
    Chemical Formula:  C8H6N2
    Molecular Weight: 130.15 
    Category:  KSM'S/Intermediates
    Literature:
    Application:  Quinoxaline (CAS: 91-19-0)  is useful as reference Impurity standard.
    Quinoxaline (CAS: 91-19-0)
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    Product Name : 7-Chlorobenzo[b]thiophene (CAS: 90407-14-0)

    Code: JCKSM-305
    CAS: 90407-14-0
    Chemical Formula:  C8H5ClS
    Molecular Weight: 168.64
    Category:  KSM'S/Intermediates
    Literature:
    Application:  7-Chlorobenzo[b]thiophene (CAS: 90407-14-0)  is useful as reference Impurity standard.
    7-Chlorobenzo[b]thiophene (CAS: 90407-14-0)
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    Product Name : 7-Bromo-2-chloroquinoxaline (CAS: 89891-65-6)

    Code: JCKSM-304
    CAS: 89891-65-6
    Chemical Formula:  C8H4BrClN2
    Molecular Weight: 243.49
    Category:  KSM'S/Intermediates
    Literature:
    Application: 7-Bromo-2-chloroquinoxaline (CAS: 89891-65-6) is useful as reference Impurity standard.
    7-Bromo-2-chloroquinoxaline (CAS: 89891-65-6)
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    Product Name : 4-Bromo-2-chlorotoluene (CAS: 89794-02-5)

    Code: JCKSM-303
    CAS: 89794-02-5
    Chemical Formula:  C7H6BrCl  
    Molecular Weight: 205.48
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-2-chlorotoluene (CAS: 89794-02-5) is useful as reference Impurity standard.
    4-Bromo-2-chlorotoluene (CAS: 89794-02-5)
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    Product Name : 4-Bromo-2-chloro-6-fluoroaniline (CAS: 885453-49-6)

    Code: JCKSM-302
    CAS: 885453-49-6
    Chemical Formula:  C6H4BrClFN
    Molecular Weight: 224.46
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-2-chloro-6-fluoroaniline (CAS: 885453-49-6) is useful as reference Impurity standard.
    4-Bromo-2-chloro-6-fluoroaniline (CAS: 885453-49-6)
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    Product Name : 4-Bromo-2-nitroaniline; 1-Amino-4-bromo-2-nitrobenzene (CAS: 875-51-4)

    Code: JCKSM-301
    CAS: 875-51-4
    Chemical Formula:  C6H5BrN2O2 
    Molecular Weight: 217.02 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-2-nitroaniline; 1-Amino-4-bromo-2-nitrobenzene (CAS: 875-51-4) is useful as reference Impurity standard.
    4-Bromo-2-nitroaniline; 1-Amino-4-bromo-2-nitrobenzene (CAS: 875-51-4)
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    Product Name : 3,7-Diethyl-3,7-Dimethyl-4,6-Nonanedione (CAS: 865193-73-3)

    Code: JCKSM-300
    CAS:  865193-73-3
    Chemical Formula:  C15H28O2
    Molecular Weight: 240.38
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3,7-Diethyl-3,7-Dimethyl-4,6-Nonanedione (CAS: 865193-73-3) is useful as reference Impurity standard.
    3,7-Diethyl-3,7-Dimethyl-4,6-Nonanedione (CAS: 865193-73-3)
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    Product Name : Methyl 4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoate (CAS: 864736-32-3)

    Code: JCKSM-299
    CAS:  864736-32-3
    Chemical Formula:  C19H14Cl2F3NO3
    Molecular Weight: 432.22
    Category:  KSM'S/Intermediates
    Literature:
    Application: Methyl 4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoate (CAS: 864736-32-3) is useful as reference Impurity standard.
    Methyl 4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoate (CAS: 864736-32-3)
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    Product Name : 4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoic acid (CAS: 864725-62-2)

    Code: JCKSM-298
    CAS:  864725-62-2
    Chemical Formula:  C18H12Cl2F3NO3
    Molecular Weight:  418.19
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoic acid (CAS: 864725-62-2) is useful as reference Impurity standard.
    4-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzoic acid (CAS: 864725-62-2)
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    Product Name : 3-(4-bromo-3-methylphenyl)-5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazole (CAS: 864725-60-0)

    Code: JCKSM-297
    CAS:  864725-60-0
    Chemical Formula:  C17H11BrCl2F3NO
    Molecular Weight:  453.08
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-(4-bromo-3-methylphenyl)-5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazole (CAS: 864725-60-0) is useful as reference Impurity standard.
    3-(4-bromo-3-methylphenyl)-5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazole (CAS: 864725-60-0)
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    Product Name : 1,3-Dichloro-5-(3,3,3-trifluoroprop-1-en-2-yl)benzene (CAS: 864725-22-4)

    Code: JCKSM-296
    CAS:  864725-22-4
    Chemical Formula: C9H5Cl2F3
    Molecular Weight:  241.04
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1,3-Dichloro-5-(3,3,3-trifluoroprop-1-en-2-yl)benzene (CAS: 864725-22-4) is useful as reference Impurity standard.
    1,3-Dichloro-5-(3,3,3-trifluoroprop-1-en-2-yl)benzene (CAS: 864725-22-4)
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    Product Name : (4-Cyano-3-methylphenyl)boronic Acid (CAS: 856255-58-8)

    Code: JCKSM-295
    CAS:  856255-58-8
    Chemical Formula: C8H8BNO2
    Molecular Weight:  160.97
    Category:  KSM'S/Intermediates
    Literature:
    Application: (4-Cyano-3-methylphenyl)boronic Acid (CAS: 856255-58-8) is useful as reference Impurity standard.
    (4-Cyano-3-methylphenyl)boronic Acid (CAS: 856255-58-8)
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    Product Name : 2-Benzoylbenzoic Acid; Benzophenone-2-carboxylic Acid (CAS: 85-52-9)

    Code: JCKSM-294
    CAS:  85-52-9
    Chemical Formula: C14H10O3 
    Molecular Weight:  226.23 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Benzoylbenzoic Acid; Benzophenone-2-carboxylic Acid (CAS: 85-52-9) is useful as reference Impurity standard.
    2-Benzoylbenzoic Acid; Benzophenone-2-carboxylic Acid (CAS: 85-52-9)
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    Product Name : 4-(Ethylsulfonyl)-2-nitrophenol (CAS: 84996-11-2)

    Code: JCKSM-293
    CAS:  84996-11-2
    Chemical Formula: C8H9NO5S  
    Molecular Weight:  231.23
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-(Ethylsulfonyl)-2-nitrophenol (CAS: 84996-11-2) is useful as reference Impurity standard.
    4-(Ethylsulfonyl)-2-nitrophenol (CAS: 84996-11-2)
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    Product Name : 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole; 1-Methylpyrazole-5-boronic Acid Pinacol Ester 4,4,5,5-Tetramethyl-2-(1-methylpyrazol-5-yl)-1,3,2-dioxaborolane (CAS: 847818-74-0)

    Code: JCKSM-292
    CAS:  847818-74-0
    Chemical Formula:  C10H17BN2O2 
    Molecular Weight:  208.07 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole  (CAS: 847818-74-0) is useful as reference Impurity standard.
    1-Methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole; 1-Methylpyrazole-5-boronic Acid Pinacol Ester 4,4,5,5-Tetramethyl-2-(1-methylpyrazol-5-yl)-1,3,2-dioxaborolane (CAS: 847818-74-0)
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    Product Name : 6-Bromoisoquinolin-1(2H)-one (CAS: 82827-09-6)

    Code: JCKSM-291
    CAS:  82827-09-6
    Chemical Formula:  C9H6BrNO
    Molecular Weight: 224.05
    Category:  KSM'S/Intermediates
    Literature:
    Application: 6-Bromoisoquinolin-1(2H)-one (CAS: 82827-09-6) is useful as reference Impurity standard.
    6-Bromoisoquinolin-1(2H)-one (CAS: 82827-09-6)
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    Product Name : 2-Hydroxy-3-methylbenzaldehyde; 3-Methylsalicylaldehyde (CAS: 824-42-0)

    Code: JCKSM-290
    CAS:  824-42-0
    Chemical Formula:  C8H8O2 
    Molecular Weight:  136.15 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Hydroxy-3-methylbenzaldehyde; 3-Methylsalicylaldehyde (CAS: 824-42-0) is useful as reference Impurity standard.
    2-Hydroxy-3-methylbenzaldehyde; 3-Methylsalicylaldehyde (CAS: 824-42-0)
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    Product Name : 3-Amino-5-((4-morpholinophenyl)amino)-1H-pyrazole-4-carbonitrile; 5-Amino-3-[4-(morpholin-4-yl)anilino]-1H-pyrazole-4-carbonitrile (CAS: 824397-67-3)

    Code: JCKSM-289
    CAS:  824397-67-3
    Chemical Formula:  C14H16N6O
    Molecular Weight:  297.32
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Amino-5-((4-morpholinophenyl)amino)-1H-pyrazole-4-carbonitrile; 5-Amino-3-[4-(morpholin-4-yl)anilino]-1H-pyrazole-4-carbonitrile (CAS: 824397-67-3) is useful as reference Impurity standard.
    3-Amino-5-((4-morpholinophenyl)amino)-1H-pyrazole-4-carbonitrile; 5-Amino-3-[4-(morpholin-4-yl)anilino]-1H-pyrazole-4-carbonitrile (CAS: 824397-67-3)
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    Product Name : 2-((Methylthio)((4-morpholinophenyl)amino)methylene)malononitrile (CAS: 824397-59-3)

    Code: JCKSM-288
    CAS:  824397-59-3
    Chemical Formula:  C15H16N4OS
    Molecular Weight:  300.38
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-((Methylthio)((4-morpholinophenyl)amino)methylene)malononitrile (CAS: 824397-59-3) is useful as reference Impurity standard.
    2-((Methylthio)((4-morpholinophenyl)amino)methylene)malononitrile (CAS: 824397-59-3)
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    Product Name : 7-bromoquinoxalin-2(1H)-one (CAS: 82031-32-1)

    Code: JCKSM-287
    CAS:  82031-32-1
    Chemical Formula:  C8H5BrN2O
    Molecular Weight:  225.04
    Category:  KSM'S/Intermediates
    Literature:
    Application: 7-bromoquinoxalin-2(1H)-one (CAS: 82031-32-1) is useful as reference Impurity standard.
    7-bromoquinoxalin-2(1H)-one (CAS: 82031-32-1)
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    Product Name : 4-Bromo-3-methylbenzaldehyde (CAS: 78775-11-8)

    Code: JCKSM-286
    CAS:  78775-11-8
    Chemical Formula:  C₈H₇BrO
    Molecular Weight:  199.05
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-3-methylbenzaldehyde (CAS: 78775-11-8) is useful as reference Impurity standard.
    4-Bromo-3-methylbenzaldehyde (CAS: 78775-11-8)
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    Product Name : 2-Chloro-3-iodopyridine (CAS: 78607-36-0)

    Code: JCKSM-285
    CAS:  78607-36-0
    Chemical Formula:  C5H3ClIN  
    Molecular Weight:  239.44
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Chloro-3-iodopyridine (CAS: 78607-36-0)  is useful as reference Impurity standard.
    2-Chloro-3-iodopyridine (CAS: 78607-36-0)
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    Product Name : 3-Fluorophenylboronic Acid; 3-Fluorobenzeneboronic Acid (CAS: 768-35-4)

    Code: JCKSM-284
    CAS:  768-35-4
    Chemical Formula:  C6H6BFO2 
    Molecular Weight:  139.92 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Fluorophenylboronic Acid; 3-Fluorobenzeneboronic Acid (CAS: 768-35-4) is useful as reference Impurity standard.
    3-Fluorophenylboronic Acid; 3-Fluorobenzeneboronic Acid (CAS: 768-35-4)
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    Product Name : 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS: 761446-44-0)

    Code: JCKSM-283
    CAS:  761446-44-0
    Chemical Formula:  C10H17BN2O2 
    Molecular Weight:  208.07 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS: 761446-44-0) is useful as reference Impurity standard.
    1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS: 761446-44-0)
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    Product Name : Neopentylalcohol; 2,2-Dimethyl-1-propanol; tert-Butylcarbinol (CAS: 75-84-3)

    Code: JCKSM-282
    CAS:  75-84-3
    Chemical Formula: C5H12O 
    Molecular Weight:  88.15 
    Category:  KSM'S/Intermediates
    Literature:
    Application: Neopentylalcohol; 2,2-Dimethyl-1-propanol; tert-Butylcarbinol (CAS: 75-84-3) is useful as reference Impurity standard.
    Neopentylalcohol; 2,2-Dimethyl-1-propanol; tert-Butylcarbinol (CAS: 75-84-3)
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    Product Name : 1-(7Z-tetradecenoyl)-rac-glycerol (CAS: 749266-35-1)

    Code: JCKSM-281
    CAS:  749266-35-1
    Chemical Formula: C17H32O4 
    Molecular Weight: 300.43
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-(7Z-tetradecenoyl)-rac-glycerol (CAS: 749266-35-1) is useful as reference Impurity standard.
    1-(7Z-tetradecenoyl)-rac-glycerol (CAS: 749266-35-1)
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    Product Name : Dibromoformaldoxime; Hydroxycarbonimidic dibromide (CAS: 74213-24-4)

    Code: JCKSM-280
    CAS:  74213-24-4
    Chemical Formula: CHBr2NO
    Molecular Weight: 202.83
    Category:  KSM'S/Intermediates
    Literature:
    Application: Dibromoformaldoxime; Hydroxycarbonimidic dibromide (CAS: 74213-24-4) is useful as reference Impurity standard.
    Dibromoformaldoxime; Hydroxycarbonimidic dibromide (CAS: 74213-24-4)
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    Product Name : 1-Chloro-4-(ethylsulfonyl)-2-nitrobenzene (CAS: 74159-80-1)

    Code: JCKSM-279
    CAS: 74159-80-1
    Chemical Formula:  C8H8ClNO4S
    Molecular Weight: 249.67
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-Chloro-4-(ethylsulfonyl)-2-nitrobenzene (CAS: 74159-80-1) is useful as reference Impurity standard.
    1-Chloro-4-(ethylsulfonyl)-2-nitrobenzene (CAS: 74159-80-1)
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    Product Name : 4-Bromophenethylamine; 2-(4-Bromophenyl)ethylamine (CAS: 73918-56-6)

    Code: JCKSM-278
    CAS: 73918-56-6
    Chemical Formula: C8H10BrN 
    Molecular Weight:  200.08 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromophenethylamine; 2-(4-Bromophenyl)ethylamine (CAS: 73918-56-6)  is useful as reference Impurity standard.
    4-Bromophenethylamine; 2-(4-Bromophenyl)ethylamine (CAS: 73918-56-6)
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    Product Name : 4-Bromo-2-chloropyridine (CAS: 73583-37-6)

    Code: JCKSM-277
    CAS: 73583-37-6
    Chemical Formula: C5H3BrClN 
    Molecular Weight: 192.44 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-2-chloropyridine (CAS: 73583-37-6)  is useful as reference Impurity standard.
    4-Bromo-2-chloropyridine (CAS: 73583-37-6)
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    Product Name : 1-Chloro-4-(ethylsulfonyl)benzene (CAS: 7205-80-3)

    Code: JCKSM-276
    CAS: 7205-80-3
    Chemical Formula: C₈H₉ClO₂S
    Molecular Weight: 204.67
    Category:  KSM'S/Intermediates
    Literature:
    Application:1-Chloro-4-(ethylsulfonyl)benzene (CAS: 7205-80-3) is useful as reference Impurity standard.
    1-Chloro-4-(ethylsulfonyl)benzene (CAS: 7205-80-3)
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    Product Name : 10-Methyl-9(10H)-acridone; N-Methyl-9-acridone (CAS: 719-54-0)

    Code: JCKSM-275
    CAS: 719-54-0
    Chemical Formula: C14H11NO 
    Molecular Weight: 209.25 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 10-Methyl-9(10H)-acridone; N-Methyl-9-acridone (CAS: 719-54-0) is useful as reference Impurity standard.
    10-Methyl-9(10H)-acridone; N-Methyl-9-acridone (CAS: 719-54-0)
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    Product Name : 1-Nitropyrazole (CAS: 7119-95-1)

    Code: JCKSM-274
    CAS: 7119-95-1
    Chemical Formula: C3H3N3O2 
    Molecular Weight: 113.08 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-Nitropyrazole (CAS: 7119-95-1) is useful as reference Impurity standard.
    1-Nitropyrazole (CAS: 7119-95-1)
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