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 : 4-(Methylthio)benzonitrile/ (CAS: 21382-98-9)

    Code: JCKSM-180
    CAS: 21382-98-9
    Chemical Formula: C8H7NS
    Molecular Weight: 149.21
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-(Methylthio)benzonitrile/ (CAS: 21382-98-9) is useful as reference Impurity standard.
    4-(Methylthio)benzonitrile/ (CAS: 21382-98-9)
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    Product Name : 5-Iodo-2-methoxythiazole/ (CAS: 2137792-51-7)

    Code: JCKSM-179
    CAS: 2137792-51-7
    Chemical Formula: C₄H₄INOS
    Molecular Weight: 241.05
    Category:  KSM'S/Intermediates
    Literature:
    Application: 5-Iodo-2-methoxythiazole/ (CAS: 2137792-51-7) is useful as reference Impurity standard.
    5-Iodo-2-methoxythiazole/ (CAS: 2137792-51-7)
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    Product Name : 7-chloro-3-methylthieno[2,3-c]pyridine/(CAS: 209287-21-8)

    Code: JCKSM-178
    CAS: 209287-21-8
    Chemical Formula: C8H6ClNS
    Molecular Weight: 183.66
    Category:  KSM'S/Intermediates
    Literature:
    Application: 7-chloro-3-methylthieno[2,3-c]pyridine/(CAS: 209287-21-8) is useful as reference Impurity standard.
    7-chloro-3-methylthieno[2,3-c]pyridine/(CAS: 209287-21-8)
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    Product Name : Diethyl bis(hydroxymethyl)malonate/ (CAS: 20605-01-0)

    Code: JCKSM-177
    CAS: 20605-01-0
    Chemical Formula: C9H16O6
    Molecular Weight: 220.22
    Category:  KSM'S/Intermediates
    Literature:
    Application: Diethyl bis(hydroxymethyl)malonate/ (CAS: 20605-01-0) is useful as reference Impurity standard.
    Diethyl bis(hydroxymethyl)malonate/ (CAS: 20605-01-0)
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    Product Name : 6-Bromo-1-chloroisoquinoline/ (CAS: 205055-63-6)

    Code: JCKSM-176
    CAS: 205055-63-6
    Chemical Formula: C₉H₅BrClN
    Molecular Weight: 242.50
    Category:  KSM'S/Intermediates
    Literature:
    Application: 6-Bromo-1-chloroisoquinoline/ (CAS: 205055-63-6) is useful as reference Impurity standard.
    6-Bromo-1-chloroisoquinoline/ (CAS: 205055-63-6)
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    Product Name : Ethyl 2-ethyl-2-methylbutanoate/ (CAS: 19945-14-3)

    Code: JCKSM-175
    CAS: 19945-14-3
    Chemical Formula: C₉H₁₈O₂
    Molecular Weight: 158.24
    Category:  KSM'S/Intermediates
    Literature:
    Application: Ethyl 2-ethyl-2-methylbutanoate/ (CAS: 19945-14-3) is useful as reference Impurity standard.
    Ethyl 2-ethyl-2-methylbutanoate/ (CAS: 19945-14-3)
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    Product Name : 3-Ethyl-3-methyl-2-pentanone/ (CAS: 19780-65-5)

    Code: JCKSM-174
    CAS: 19780-65-5
    Chemical Formula: C8H16O
    Molecular Weight: 128.21
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Ethyl-3-methyl-2-pentanone/ (CAS: 19780-65-5) is useful as reference Impurity standard.
    3-Ethyl-3-methyl-2-pentanone/ (CAS: 19780-65-5)
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    Product Name : tert-butyl (2-oxo-2-((2,2,2-trifluoroethyl)amino)ethyl)carbamate/ (CAS:1231755-15-9)

    Code: JCKSM-126
    CAS: 1231755-15-9
    Chemical Formula: C9H15F3N2O3
    Molecular Weight: 256.23 
    Category:  KSM'S/Intermediates
    Literature:
    Application: tert-butyl (2-oxo-2-((2,2,2-trifluoroethyl)amino)ethyl)carbamate/ (CAS:1231755-15-9) is useful as reference Impurity standard.
    tert-butyl (2-oxo-2-((2,2,2-trifluoroethyl)amino)ethyl)carbamate/ (CAS:1231755-15-9)
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    Product Name : 1-Bromo-3,5-dichlorobenzene/ 19752-55-7

    Code: JCKSM-173
    CAS: 19752-55-7
    Chemical Formula: C6H3BrCl2
    Molecular Weight: 225.89  
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-Bromo-3,5-dichlorobenzene/ 19752-55-7 is useful as reference Impurity standard.
    1-Bromo-3,5-dichlorobenzene/ 19752-55-7
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    Product Name : 2-Bromo thioanisole/1-Bromo-2-(methylthio)benzene/19614-16-5

    Code: JCKSM-172
    CAS: 19614-16-5
    Chemical Formula: C7H7BrS
    Molecular Weight:203.10 
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Bromo thioanisole/1-Bromo-2-(methylthio)benzene/19614-16-5 is useful as reference Impurity standard.
    2-Bromo thioanisole/1-Bromo-2-(methylthio)benzene/19614-16-5
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    Product Name : 4-Borono-2-methylbenzoic acid/191089-06-2

    Code: JCKSM-171
    CAS: 191089-06-2
    Chemical Formula: C8H9BO4
    Molecular Weight: 179.97
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Borono-2-methylbenzoic acid/191089-06-2 is useful as reference Impurity standard.
    4-Borono-2-methylbenzoic acid/191089-06-2
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    Product Name : 4-Bromophenylacetic acid/1878-68-8

    Code: JCKSM-170
    CAS: 1878-68-8
    Chemical Formula: C8H7BrO2
    Molecular Weight: 215.05
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromophenylacetic acid/1878-68-8 is useful as reference Impurity standard.
    4-Bromophenylacetic acid/1878-68-8
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    Product Name : 3-Bromophenylacetic Acid/1878-67-7

    Code: JCKSM-169
    CAS: 1878-67-7
    Chemical Formula: C8H7BrO2
    Molecular Weight: 215.05
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Bromophenylacetic Acid is useful as reference Impurity standard.
    3-Bromophenylacetic Acid/1878-67-7
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    Product Name : 3-Chloro-2-fluoro-6-(trifluoromethyl)benzoic acid/ 186517-41-9

    Code: JCKSM-168
    CAS: 186517-41-9
    Chemical Formula: C8H3ClF4O2
    Molecular Weight: 1242.555
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Chloro-2-fluoro-6-(trifluoromethyl)benzoic acid is useful as reference Impurity standard.
    3-Chloro-2-fluoro-6-(trifluoromethyl)benzoic acid/ 186517-41-9
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    Product Name : 3-Hydroxyazetidine Hydrochloride/ 18621-18-6

    Code: JCKSM-167
    CAS: 18621-18-6 
    Chemical Formula: C3H7NO·HCl
    Molecular Weight: 109.55
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Hydroxyazetidine Hydrochloride is useful as reference Impurity standard.
    3-Hydroxyazetidine Hydrochloride/ 18621-18-6
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    Product Name : 1-(Diphenylmethyl)-3-hydroxyazetidine/ 18621-17-5

    Code: JCKSM-166
    CAS: 18621-17-5
    Chemical Formula: C16H17NO
    Molecular Weight:  239.32
    Category:  KSM'S/Intermediates
    Literature:
    Application: 1-(Diphenylmethyl)-3-hydroxyazetidine is useful as reference Impurity standard.
    1-(Diphenylmethyl)-3-hydroxyazetidine/ 18621-17-5
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    Product Name : p-Toluenesulfonamide sodium salt/ 18522-92-4

    Code: JCKSM-165
    CAS: 18522-92-4
    Chemical Formula: C7H8NNaO2S
    Molecular Weight: 194.206
    Category:  KSM'S/Intermediates
    Literature:
    Application: p-Toluenesulfonamide sodium salt is useful as reference Impurity standard.
    p-Toluenesulfonamide sodium salt/ 18522-92-4
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    Product Name : Benzaldehyde, 4-bromo-3-methyl-, oxime/ 180082-96-6

    Code: JCKSM-164
    CAS:  180082-96-6
    Chemical Formula: C8H8BrNO
    Molecular Weight: 214.06
    Category:  KSM'S/Intermediates
    Literature:
    Application: Benzaldehyde, 4-bromo-3-methyl-, oxime is useful as reference Impurity standard.
    Benzaldehyde, 4-bromo-3-methyl-, oxime/ 180082-96-6
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    Product Name : 4,4′-Dibromo[1,1′-binaphthalene]-2,2′-diol/ 178065-28-6

    Code: JCKSM-163
    CAS:  178065-28-6
    Chemical Formula: C20H12Br2O2
    Molecular Weight: 444.12
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4,4′-Dibromo[1,1′-binaphthalene]-2,2′-diol is useful as reference Impurity standard.
    4,4′-Dibromo[1,1′-binaphthalene]-2,2′-diol/ 178065-28-6
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    Product Name : 3-Bromo-5-(tert-butyl)benzo[b]thiophene/ 1780644-81-6

    Code: JCKSM-162
    CAS:  1780644-81-6
    Chemical Formula: C12H13BrS
    Molecular Weight:  269.20
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Bromo-5-(tert-butyl)benzo[b]thiophene is useful as reference Impurity standard.
    3-Bromo-5-(tert-butyl)benzo[b]thiophene/ 1780644-81-6
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    Product Name : 4-Fluorophenylboronic Acid (contains varying amounts of Anhydride)/ 1765-93-1

    Code: JCKSM-161
    CAS:  1765-93-1
    Chemical Formula: C6H6BFO2
    Molecular Weight:  139.92
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Fluorophenylboronic Acid (contains varying amounts of Anhydride) is useful as reference Impurity standard.
    4-Fluorophenylboronic Acid (contains varying amounts of Anhydride)/ 1765-93-1
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    Product Name : 3-Chloro-4-methylphenylboronic Acid (contains varying amounts of Anhydride)/ 175883-63-3

    Code: JCKSM-160
    CAS: 175883-63-3 
    Chemical Formula: C7H8BClO2
    Molecular Weight: 170.40
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Chloro-4-methylphenylboronic Acid (contains varying amounts of Anhydride) is useful as reference Impurity standard.
    3-Chloro-4-methylphenylboronic Acid (contains varying amounts of Anhydride)/ 175883-63-3
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    Product Name : 5-tert-butylbenzo[b]thiophene/ 17515-00-3

    Code: JCKSM-159
    CAS: 17515-00-3
    Chemical Formula: C12H14S
    Molecular Weight: 190.3
    Category:  KSM'S/Intermediates
    Literature:
    Application: 5-tert-butylbenzo[b]thiophene is useful as reference Impurity standard.
    5-tert-butylbenzo[b]thiophene/ 17515-00-3
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    Product Name : 3,5-Dimethylphenylboronic Acid (contains varying amounts of Anhydride)/ 172975-69-8

    Code: JCKSM-158
    CAS: 172975-69-8 
    Chemical Formula: C8H11BO2
    Molecular Weight: 149.98
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3,5-Dimethylphenylboronic Acid (contains varying amounts of Anhydride) is useful as reference Impurity standard.
    3,5-Dimethylphenylboronic Acid (contains varying amounts of Anhydride)/ 172975-69-8
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    Product Name : 2-(Methylthio)phenylboronic Acid (contains varying amounts of Anhydride)/ 168618-42-6

    Code: JCKSM-157
    CAS: 168618-42-6
    Chemical Formula: C7H9BO2S
    Molecular Weight: 168.02
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-(Methylthio)phenylboronic Acid (contains varying amounts of Anhydride) is useful as reference Impurity standard.
    2-(Methylthio)phenylboronic Acid (contains varying amounts of Anhydride)/ 168618-42-6
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    Product Name : 4-Chlorophenylboronic Acid (contains varying amounts of Anhydride)/ 1679-18-1

    Code: JCKSM-156
    CAS: 1679-18-1 
    Chemical Formula: C6H6BClO2
    Molecular Weight:  156.37
    Category:  KSM'S/Intermediates
    Literature:
    Application:4-Chlorophenylboronic Acid (contains varying amounts of Anhydride) is useful as reference Impurity standard.
    4-Chlorophenylboronic Acid (contains varying amounts of Anhydride)/ 1679-18-1
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    Product Name : m-Butoxybromobenzene/ 165800-57-7

    Code: JCKSM-155
    CAS: 165800-57-7
    Chemical Formula: C10H13BrO
    Molecular Weight: 229.114
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Methylphenylboronic Acid (contains varying amounts of Anhydride) is useful as reference Impurity standard.
    m-Butoxybromobenzene/ 165800-57-7
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    Product Name : 2-Methylphenylboronic Acid (contains varying amounts of Anhydride)/ 16419-60-6

    Code: JCKSM-154
    CAS: 16419-60-6
    Chemical Formula: C7H9BO2
    Molecular Weight: 135.96
    Category:  KSM'S/Intermediates
    Literature:
    Application: 2-Methylphenylboronic Acid (contains varying amounts of Anhydride) is useful as reference Impurity standard.
    2-Methylphenylboronic Acid (contains varying amounts of Anhydride)/ 16419-60-6
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    Product Name : 3-Bromo-2-fluorobenzoic Acid/ 161957-56-8

    Code: JCKSM-153
    CAS: 161957-56-8
    Chemical Formula: C7H4BrFO2
    Molecular Weight: 219.01
    Category:  KSM'S/Intermediates
    Literature:
    Application: 3-Bromo-2-fluorobenzoic Acid is useful as reference Impurity standard.
    3-Bromo-2-fluorobenzoic Acid/ 161957-56-8
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    Product Name : 2,6-Dichloro-3-nitropyridine/ 16013-85-7

    Code: JCKSM-152
    CAS: 16013-85-7
    Chemical Formula: C5H2Cl2N2O2
    Molecular Weight: 192.98
    Category:  KSM'S/Intermediates
    Literature:
    Application:2,6-dichloro-3- nitropyridine ; 3-Nitro-2,6-dichloropyridine is useful as reference Impurity standard.
    2,6-Dichloro-3-nitropyridine/ 16013-85-7
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    Product Name : 4-Bromo-1-methylpyrazole/ 15803-02-8

    Code: JCKSM-151
    CAS: 15803-02-8
    Chemical Formula: C4H5BrN2
    Molecular Weight: 161.00
    Category:  KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-1-methylpyrazole is useful as reference Impurity standard
    4-Bromo-1-methylpyrazole/ 15803-02-8
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    Product Name : 4-Bromo-1,2-phenylenediamine/ 1575-37-7

    Code: JCKSM-150
    CAS: 1575-37-7
    Chemical Formula: C6H7BrN2
    Molecular Weight:187.04
    Category: KSM'S/Intermediates
    Literature:
    Application: 4-Bromo-1,2-phenylenediamine is useful as reference Impurity standard
    4-Bromo-1,2-phenylenediamine/ 1575-37-7
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    Product Name : 3,5-Difluorophenylboronic Acid (contains varying amounts of Anhydride)/ 156545-07-2

    Code: JCKSM-149
    CAS: 156545-07-2 
    Chemical Formula: C6H5BF2O2
    Molecular Weight: 157.91
    Category: KSM'S/Intermediates
    Literature:
    Application: 3,5-Difluorophenylboronic Acid (contains varying amounts of Anhydride) is useful as reference Impurity standard
    3,5-Difluorophenylboronic Acid (contains varying amounts of Anhydride)/ 156545-07-2
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