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 : 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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    Product Name : p-Phenetidine/ 156-43-4

    Code: JCKSM-148
    CAS: 156-43-4
    Chemical Formula: C8H11NO
    Molecular Weight: 137.18
    Category: KSM'S/Intermediates
    Literature:
    Application: p-Phenetidine is useful as reference Impurity standard
    p-Phenetidine/ 156-43-4
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    Product Name : 2-Chloro-4-iodopyridine/153034-86-7

    Code: JCKSM-147
    CAS: 153034-86-7
    Chemical Formula: C5H3ClIN
    Molecular Weight: 239.4
    Category: KSM'S/Intermediates
    Literature:
    Application: 2-Chloro-4-iodopyridine is useful as reference Impurity standard
    2-Chloro-4-iodopyridine/153034-86-7
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    Product Name : Bis(phenylacetyl) Disulfide/ 15088-78-5

    Code: JCKSM-146
    CAS: 15088-78-5 
    Chemical Formula: C16H14O2S2
    Molecular Weight: 302.41
    Category: KSM'S/Intermediates
    Literature:
    Application: Benzenethiol, 2-(2-methylpropyl) is useful as reference Impurity standard
    Bis(phenylacetyl) Disulfide/ 15088-78-5
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    Product Name : Benzenethiol, 2-(2-methylpropyl)/ 1454580-70-1

    Code: JCKSM-145
    CAS: 1454580-70-1
    Chemical Formula: C10H14S
    Molecular Weight: 166.283
    Category: KSM'S/Intermediates
    Literature:
    Application: Benzenethiol, 2-(2-methylpropyl) is useful as reference Impurity standard
    Benzenethiol, 2-(2-methylpropyl)/ 1454580-70-1
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    Product Name : 2-Methoxythiazole/ 14542-13-3

    Code: JCKSM-144
    CAS: 14542-13-3
    Chemical Formula: C4H5NOS
    Molecular Weight: 115.15
    Category: KSM'S/Intermediates
    Literature:
    Application: 2-Methoxythiazole is useful as reference Impurity standard
    2-Methoxythiazole/ 14542-13-3
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    Product Name : trans-3-Bromocinnamic Acid/ 14473-91-7

    Code: JCKSM-143
    CAS: 14473-91-7
    Chemical Formula: C9H7BrO2
    Molecular Weight: 227.06
    Category: KSM'S/Intermediates
    Literature:
    Application: trans-3-Bromocinnamic Acid is useful as reference Impurity standard
    trans-3-Bromocinnamic Acid/ 14473-91-7
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    Product Name : 4-Amino-2-chloropyridine/ 14432-12-3

    Code: JCKSM-142
    CAS: 14432-12-3
    Chemical Formula: C5H5ClN2
    Molecular Weight: 128.56
    Category: KSM'S/Intermediates
    Literature:
    Application: 4-Amino-2-chloropyridine is useful as reference Impurity standard
    4-Amino-2-chloropyridine/ 14432-12-3
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    Product Name : 4-Methyl-2-thiophenecarboxylic acid/ 14282-78-1

    Code: JCKSM-141
    CAS: 14282-78-1
    Chemical Formula: C6H6O2S
    Molecular Weight: 142.18
    Category: KSM'S/Intermediates
    Literature:
    Application: 4-Methyl-2-thiophenecarboxylic acid is useful as reference Impurity standard
    4-Methyl-2-thiophenecarboxylic acid/ 14282-78-1
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    Product Name : 7-Bromobenzo[b]thiophene/ 1423-61-6

    Code: JCKSM-140
    CAS: 1423-61-6
    Chemical Formula: C8H5BrS
    Molecular Weight: 213.09
    Category: KSM'S/Intermediates
    Literature:
    Application: 7-Bromobenzo[b]thiophene is useful as reference Impurity standard
    7-Bromobenzo[b]thiophene/ 1423-61-6
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    Product Name : 1-(tert-Butoxycarbonyl)azetidine-3-carboxylic Acid/ 142253-55-2

    Code: JCKSM-139
    CAS: 142253-55-2
    Chemical Formula: C9H15NO4
    Molecular Weight: 201.22
    Category: KSM'S/Intermediates
    Literature:
    Application:1-(tert-Butoxycarbonyl)azetidine-3-carboxylic Acid is useful as reference Impurity standard
    1-(tert-Butoxycarbonyl)azetidine-3-carboxylic Acid/ 142253-55-2
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    Product Name : tert-Butyl 3-[(Methylsulfonyl)oxy]azetidine-1-carboxylate/ 141699-58-3

    Code: JCKSM-138
    CAS: 141699-58-3
    Chemical Formula: C9H17NO5S
    Molecular Weight: 251.30
    Category: KSM'S/Intermediates
    Literature:
    Application: tert-Butyl 3-[(Methylsulfonyl)oxy]azetidine-1-carboxylate is useful as reference Impurity standard
    tert-Butyl 3-[(Methylsulfonyl)oxy]azetidine-1-carboxylate/ 141699-58-3
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    Product Name : tert-Butyl 3-cyanoazetidine-1-carboxylate/ 142253-54-1

    Code: JCKSM-137
    CAS: 142253-54-1
    Chemical Formula: C₉H₁₄N₂O₂
    Molecular Weight: 182.22
    Category: KSM'S/Intermediates
    Literature:
    Application: tert-Butyl 3-cyanoazetidine-1-carboxylate is useful as reference Impurity standard
    tert-Butyl 3-cyanoazetidine-1-carboxylate/ 142253-54-1
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    Product Name : 1-(tert-Butoxycarbonyl)-3-hydroxyazetidine/ 141699-55-0

    Code: JCKSM-136
    CAS: 141699-55-0 
    Chemical Formula: C8H15NO3
    Molecular Weight: 173.21
    Category: KSM'S/Intermediates
    Literature:
    Application: 1-(tert-Butoxycarbonyl)-3-hydroxyazetidine is useful as reference Impurity standard
    1-(tert-Butoxycarbonyl)-3-hydroxyazetidine/ 141699-55-0
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    Product Name : 2,4-Dimethylbenzenethiol/ 13616-82-5

    Code: JCKSM-135
    CAS: 13616-82-5
    Chemical Formula: C8H10S
    Molecular Weight: 138.23
    Category: KSM'S/Intermediates
    Literature:
    Application: 2,4-Dimethylbenzenethiol is useful as reference Impurity standard
    2,4-Dimethylbenzenethiol/ 13616-82-5
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    Product Name : 1,3-Dihydroxynaphthalene/ 132-86-5

    Code: JCKSM-134
    CAS: 132-86-5 
    Chemical Formula: C10H8O2
    Molecular Weight: 160.17
    Category: KSM'S/Intermediates
    Literature:
    Application: 1,3-Dihydroxynaphthalene is useful as reference Impurity standard
    1,3-Dihydroxynaphthalene/ 132-86-5
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    Product Name : 2-(3-Chloroanilino)benzoic Acid/ 13278-36-9

    Code: JCKSM-133
    CAS: 13278-36-9
    Chemical Formula: C13H10ClNO2
    Molecular Weight: 247.68
    Category: KSM'S/Intermediates
    Literature:
    Application: 2-(3-Chloroanilino)benzoic Acid is useful as reference Impurity standard
    2-(3-Chloroanilino)benzoic Acid/ 13278-36-9
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