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 : 3-Phenoxy-1,2,3,4-tetrahydrobenzo[h]quinoline/ (CAS: 53853-17-1)

    Code: JCKSM-240
    CAS:  53853-17-1
    Chemical Formula:  C19H17NO
    Molecular Weight:  275.3
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Phenoxy-1,2,3,4-tetrahydrobenzo[h]quinoline/ (CAS: 53853-17-1) is useful as reference Impurity standard.
    3-Phenoxy-1,2,3,4-tetrahydrobenzo[h]quinoline/ (CAS: 53853-17-1)
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    Product Name : N-Methyl-4-(methylthio)benzamide/ (CAS: 53551-23-8)

    Code: JCKSM-239
    CAS:  53551-23-8
    Chemical Formula:  C9H11NOS
    Molecular Weight:  181.26
    Category:  KSM'S/Intermediates
    Literature:
    Application: N-Methyl-4-(methylthio)benzamide/ (CAS: 53551-23-8)  is useful as reference Impurity standard.
    N-Methyl-4-(methylthio)benzamide/ (CAS: 53551-23-8)
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    Product Name : Tetrahydropyran-4-yl-carboxylic acid/ (CAS: 5337-03-1)

    Code: JCKSM-238
    CAS:  5337-03-1
    Chemical Formula:  C6H10O3 
    Molecular Weight:  130.14 
    Category:  KSM'S/Intermediates
    Literature:
    Application: Tetrahydropyran-4-yl-carboxylic acid/ (CAS: 5337-03-1)  is useful as reference Impurity standard.
    Tetrahydropyran-4-yl-carboxylic acid/ (CAS: 5337-03-1)
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    Product Name : 6-Bromoquinoline/ (CAS: 5332-25-2)

    Code: JCKSM-237
    CAS:  5332-25-2
    Chemical Formula: C9H6BrN 
    Molecular Weight: 208.06 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 6-Bromoquinoline/ (CAS: 5332-25-2) is useful as reference Impurity standard.
    6-Bromoquinoline/ (CAS: 5332-25-2)
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    Product Name : 3-chloro-2-methylbenzenethiol/ (CAS: 53249-76-6)

    Code: JCKSM-236
    CAS:  53249-76-6
    Chemical Formula:  C₇H₇ClS
    Molecular Weight: 158.65
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-chloro-2-methylbenzenethiol/ (CAS: 53249-76-6) is useful as reference Impurity standard.
    3-chloro-2-methylbenzenethiol/ (CAS: 53249-76-6)
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    Product Name : N-Hydroxyphthalimide/ (CAS: 524-38-9)

    Code: JCKSM-235
    CAS: 524-38-9
    Chemical Formula: C8H5NO3 
    Molecular Weight: 163.13 
    Category:  KSM'S/Intermediates
    Literature:
    Application: N-Hydroxyphthalimide/ (CAS: 524-38-9) is useful as reference Impurity standard.
    N-Hydroxyphthalimide/ (CAS: 524-38-9)
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    Product Name : 2-(Bis(methylthio)methylene)malononitrile; 1,1-Dicyano-2,2-bis(methylthio)ethene; 2-[Bis(methylsulfanyl)methylidene]propanedinitrile; [2-Cyano-3,3-di(methylthio)]acrylonitrile/ (CAS: 5147-80-8)

    Code: JCKSM-234
    CAS: 5147-80-8
    Chemical Formula: C6H6N2S2
    Molecular Weight: 170.25 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-(Bis(methylthio)methylene)malononitrile/ (CAS: 5147-80-8)  is useful as reference Impurity standard.
    2-(Bis(methylthio)methylene)malononitrile; 1,1-Dicyano-2,2-bis(methylthio)ethene; 2-[Bis(methylsulfanyl)methylidene]propanedinitrile; [2-Cyano-3,3-di(methylthio)]acrylonitrile/ (CAS: 5147-80-8)
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    Product Name : 1-Chloro-4-(Ethylthio)benzene; 1-chloro-4-(ethylsulfanyl)benzene/ (CAS: 5120-72-9)

    Code: JCKSM-233
    CAS: 5120-72-9
    Chemical Formula: C8H9ClS
    Molecular Weight: 172.68
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-Chloro-4-(Ethylthio)benzene; 1-chloro-4-(ethylsulfanyl)benzene/ (CAS: 5120-72-9) is useful as reference Impurity standard.
    1-Chloro-4-(Ethylthio)benzene; 1-chloro-4-(ethylsulfanyl)benzene/ (CAS: 5120-72-9)
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    Product Name : 6-Bromoquinoxaline/ (CAS: 50998-17-9)

    Code: JCKSM-232
    CAS: 50998-17-9
    Chemical Formula: C8H5BrN2 
    Molecular Weight: 209.05 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 6-Bromoquinoxaline/ (CAS: 50998-17-9) is useful as reference Impurity standard.
    6-Bromoquinoxaline/ (CAS: 50998-17-9)
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    Product Name : Quaternium-15; 1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride/ (CAS: 4080-31-3)

    Code: JCKSM-231
    CAS: 4080-31-3
    Chemical Formula: C9H16ClN4(1+)*Cl(1-)
    Molecular Weight: 251.159
    Category:  KSM'S/Intermediates
    Literature:
    Application: Quaternium-15; 1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride/ (CAS: 4080-31-3) is useful as reference Impurity standard.
    Quaternium-15; 1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride/ (CAS: 4080-31-3)
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    Product Name : 4-Allylphenol; Chavicol; 3-(4-Hydroxyphenyl)-1-propene; 4-(2-Propen-1-yl)phenol/ (CAS: 501-92-8)

    Code: JCKSM-230
    CAS: 501-92-8
    Chemical Formula: C9H10O 
    Molecular Weight: 134.18 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Allylphenol; 3-(4-Hydroxyphenyl)-1-propene; 4-(2-Propen-1-yl)phenol/ (CAS: 501-92-8) is useful as reference Impurity standard.
    4-Allylphenol; Chavicol; 3-(4-Hydroxyphenyl)-1-propene; 4-(2-Propen-1-yl)phenol/ (CAS: 501-92-8)
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    Product Name : Citracoinc acid; Methylmaleic Acid/ (CAS: 498-23-7)

    Code: JCKSM-229
    CAS: 498-23-7
    Chemical Formula: C5H6O4 
    Molecular Weight: 130.10 
    Category:  KSM'S/Intermediates
    Literature:
    Application: Citracoinc acid; Methylmaleic Acid/ (CAS: 498-23-7) is useful as reference Impurity standard.
    Citracoinc acid; Methylmaleic Acid/ (CAS: 498-23-7)
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    Product Name : 5-Bromoquinoline/ (CAS: 4964-71-0)

    Code: JCKSM-228
    CAS: 4964-71-0
    Chemical Formula: C9H6BrN 
    Molecular Weight: 208.06 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 5-Bromoquinoline/ (CAS: 4964-71-0) is useful as reference Impurity standard.
    5-Bromoquinoline/ (CAS: 4964-71-0)
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    Product Name : 8-Bromoisoquinolin-1(2H)-one; 8-bromo-1-isoquinolinol/ (CAS: 475994-60-6)

    Code: JCKSM-227
    CAS: 475994-60-6
    Chemical Formula:  C9H6BrNO
    Molecular Weight: 224.05
    Category:  KSM'S/Intermediates
    Literature:
    Application: 8-Bromoisoquinolin-1(2H)-one; 8-bromo-1-isoquinolinol/ (CAS: 475994-60-6) is useful as reference Impurity standard.
    8-Bromoisoquinolin-1(2H)-one; 8-bromo-1-isoquinolinol/ (CAS: 475994-60-6)
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    Product Name : 2-Bromopyrimidine/ (CAS: 4595-60-2)

    Code: JCKSM-226
    CAS: 4595-60-2
    Chemical Formula: C4H3BrN2 
    Molecular Weight: 158.99
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Bromopyrimidine/ (CAS: 4595-60-2) is useful as reference Impurity standard.
    2-Bromopyrimidine/ (CAS: 4595-60-2)
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    Product Name : Phenyl(trifluoromethyl)sulfane; (Trifluoromethylthio)benzene α,α,α-Trifluorothioanisole/ (CAS: 456-56-4)

    Code: JCKSM-225
    CAS: 456-56-4
    Chemical Formula: C7H5F3S 
    Molecular Weight: 178.17 
    Category:  KSM'S/Intermediates
    Literature:
    Application: Phenyl(trifluoromethyl)sulfane/ (CAS: 456-56-4) is useful as reference Impurity standard.
    Phenyl(trifluoromethyl)sulfane; (Trifluoromethylthio)benzene α,α,α-Trifluorothioanisole/ (CAS: 456-56-4)
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    Product Name : 4-Fluoro-3-nitrobenzoic acid/ (CAS: 453-71-4)

    Code: JCKSM-224
    CAS: 453-71-4
    Chemical Formula: C7H4FNO4 
    Molecular Weight: 185.11 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Fluoro-3-nitrobenzoic acid/ (CAS: 453-71-4) is useful as reference Impurity standard.
    4-Fluoro-3-nitrobenzoic acid/ (CAS: 453-71-4)
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    Product Name : 4-Butoxyaniline/ (CAS: 4344-55-2)

    Code: JCKSM-223
    CAS: 4344-55-2
    Chemical Formula: C10H15NO
    Molecular Weight: 165.23
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Butoxyaniline/ (CAS: 4344-55-2) is useful as reference Impurity standard.
    4-Butoxyaniline/ (CAS: 4344-55-2)
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    Product Name : 2-Amino-4-(ethylsulfonyl)phenol/ (CAS: 43115-40-8)

    Code: JCKSM-222
    CAS: 43115-40-8
    Chemical Formula: C₈H₁₁NO₃S
    Molecular Weight: 201.24
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Amino-4-(ethylsulfonyl)phenol/ (CAS: 43115-40-8) is useful as reference Impurity standard.
    2-Amino-4-(ethylsulfonyl)phenol/ (CAS: 43115-40-8)
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    Product Name : 4-Bromo-3-methylbenzonitrile; 1-Bromo-4-cyano-2-methylbenzene 4-Bromo-m-tolunitrile/ (CAS: 41963-20-6)

    Code: JCKSM-221
    CAS: 41963-20-6
    Chemical Formula: C8H6BrN 
    Molecular Weight: 196.05 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-3-methylbenzonitrile/ (CAS: 41963-20-6) is useful as reference Impurity standard.
    4-Bromo-3-methylbenzonitrile; 1-Bromo-4-cyano-2-methylbenzene 4-Bromo-m-tolunitrile/ (CAS: 41963-20-6)
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    Product Name : 1-benzhydrylazetidin-3-one; 1-benzhydryl-3-azetidinone/ (CAS: 40320-60-3)

    Code: JCKSM-220
    CAS: 40320-60-3
    Chemical Formula: C16H15O1N1
    Molecular Weight: 237.3
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-benzhydrylazetidin-3-one; 1-benzhydryl-3-azetidinone/ (CAS: 40320-60-3) is useful as reference Impurity standard.
    1-benzhydrylazetidin-3-one; 1-benzhydryl-3-azetidinone/ (CAS: 40320-60-3)
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    Product Name : 1-Bromo-2,3-difluorobenzene; 2,3-Difluorobromobenzene/ (CAS: 38573-88-5)

    Code: JCKSM-219
    CAS: 38573-88-5
    Chemical Formula: C6H3BrF2 
    Molecular Weight: 192.99 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-Bromo-2,3-difluorobenzene; 2,3-Difluorobromobenzene/ (CAS: 38573-88-5) is useful as reference Impurity standard.
    1-Bromo-2,3-difluorobenzene; 2,3-Difluorobromobenzene/ (CAS: 38573-88-5)
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    Product Name : Methyl 4-(methylthio)benzoate/ (CAS: 3795-79-7)

    Code: JCKSM-218
    CAS: 3795-79-7
    Chemical Formula: C₉H₁₀O₂S
    Molecular Weight: 182.24
    Category:  KSM'S/Intermediates
    Literature:
    Application: Methyl 4-(methylthio)benzoate/ (CAS: 3795-79-7) is useful as reference Impurity standard.
    Methyl 4-(methylthio)benzoate/ (CAS: 3795-79-7)
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    Product Name : 4-(Methoxycarbonyl)pyridine 1-oxide; methyl Isonicotinate 1-oxide/ (CAS: 3783-38-8)

    Code: JCKSM-217
    CAS: 3783-38-8
    Chemical Formula: C7H7NO3
    Molecular Weight: 153.14
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-(Methoxycarbonyl)pyridine 1-oxide; methyl Isonicotinate 1-oxide/ (CAS: 3783-38-8) is useful as reference Impurity standard.
    4-(Methoxycarbonyl)pyridine 1-oxide; methyl Isonicotinate 1-oxide/ (CAS: 3783-38-8)
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    Product Name : 2,5-difluoroaniline/ (CAS: 367-30-6)

    Code: JCKSM-216
    CAS: 367-30-6
    Chemical Formula: C6H5F2N 
    Molecular Weight: 129.11 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2,5-difluoroaniline/ (CAS: 367-30-6) is useful as reference Impurity standard.
    2,5-difluoroaniline/ (CAS: 367-30-6)
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    Product Name : 4-Bromo-2-fluoroaniline/ (CAS: 367-24-8)

    Code: JCKSM-215
    CAS:  367-24-8
    Chemical Formula: C6H5BrFN
    Molecular Weight: 190.01
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-2-fluoroaniline/ (CAS: 367-24-8) is useful as reference Impurity standard.
    4-Bromo-2-fluoroaniline/ (CAS: 367-24-8)
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    Product Name : 1-benzhydrylazetidine-3-carboxylic acid; 1-(Diphenylmethyl)azetidine-3-carboxylic Acid/ (CAS: 36476-87-6)

    Code: JCKSM-214
    CAS:  36476-87-6
    Chemical Formula: C17H17NO2
    Molecular Weight: 267.32
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-benzhydrylazetidine-3-carboxylic acid/ (CAS: 36476-87-6) is useful as reference Impurity standard.
    1-benzhydrylazetidine-3-carboxylic acid; 1-(Diphenylmethyl)azetidine-3-carboxylic Acid/ (CAS: 36476-87-6)
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    Product Name : 1-benzhydrylazetidine-3-carbonitrile; 1-(Diphenylmethyl)azetidine-3-carbonitrile/ (CAS: 36476-86-5)

    Code: JCKSM-213
    CAS:  36476-86-5
    Chemical Formula: C17H16N2
    Molecular Weight: 248.33
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-benzhydrylazetidine-3-carbonitrile/ (CAS: 36476-86-5) is useful as reference Impurity standard.
    1-benzhydrylazetidine-3-carbonitrile; 1-(Diphenylmethyl)azetidine-3-carbonitrile/ (CAS: 36476-86-5)
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    Product Name : 1,4-difluoro-2-nitrobenzene; 2,5-Difluoronitrobenzene/ (CAS: 364-74-9)

    Code: JCKSM-212
    CAS: 364-74-9
    Chemical Formula: C6H3F2NO2 
    Molecular Weight: 159.09 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1,4-difluoro-2-nitrobenzene; 2,5-Difluoronitrobenzene/ (CAS: 364-74-9) is useful as reference Impurity standard.
    1,4-difluoro-2-nitrobenzene; 2,5-Difluoronitrobenzene/ (CAS: 364-74-9)
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    Product Name : 2-Methyl-1-(thiophen-2-yl)propan-1-one/ (CAS: 36448-60-9)

    Code: JCKSM-211
    CAS: 36448-60-9
    Chemical Formula: C8H10OS
    Molecular Weight: 154.23
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Methyl-1-(thiophen-2-yl)propan-1-one/ (CAS: 36448-60-9) is useful as reference Impurity standard.
    2-Methyl-1-(thiophen-2-yl)propan-1-one/ (CAS: 36448-60-9)
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    Product Name : (3-butoxyphenyl)boronic acid/ (CAS: 352534-81-7)

    Code: JCKSM-210
    CAS: 352534-81-7
    Chemical Formula: C10H15BO3 
    Molecular Weight: 194.04  
    Category:  KSM'S/Intermediates
    Literature:
    Application: (3-butoxyphenyl)boronic acid/ (CAS: 352534-81-7) is useful as reference Impurity standard.
    (3-butoxyphenyl)boronic acid/ (CAS: 352534-81-7)
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    Product Name : (3-(Trifluoromethyl)phenyl)methanol/ (CAS: 349-75-7)

    Code: JCKSM-209
    CAS: 349-75-7
    Chemical Formula: C8H7F3O 
    Molecular Weight: 176.14 
    Category:  KSM'S/Intermediates
    Literature:
    Application: (3-(Trifluoromethyl)phenyl)methanol/ (CAS: 349-75-7) is useful as reference Impurity standard.
    (3-(Trifluoromethyl)phenyl)methanol/ (CAS: 349-75-7)
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    Product Name : 1-bromo-4-(methylsulfonyl)benzene; 4-Bromophenyl methyl sulfone/ (CAS: 3466-32-8)

    Code: JCKSM-208
    CAS: 3466-32-8
    Chemical Formula: C7H7BrO2S
    Molecular Weight: 235.10
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-bromo-4-(methylsulfonyl)benzene; 4-Bromophenyl methyl sulfone/ (CAS: 3466-32-8) is useful as reference Impurity standard.
    1-bromo-4-(methylsulfonyl)benzene; 4-Bromophenyl methyl sulfone/ (CAS: 3466-32-8)
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