British Pharmacopoeia Chemical reference substances (BPCRS)

These Primary standards are established using absolute methods and the declared content figures are determined without comparing to another substance. You should use BPCRS to perform the tests in the British Pharmacopoeia (BP) or BP (Veterinary). Do not eat BPCRS or feed them to animals – you should only use BPCRS for chemical analysis. They are not suitable for any other use.

07 August 2025

We are pleased to update that products affected by the recent electrical freezer fault are now available following their temporary withdrawal.

This follows a detailed quality assessment of vialled stock and re-vialing product from our reserved bulk supplies.

Thank you again for your patience while we worked to resolve this matter.

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  • Search result 1

    Category Number 1243
    Pack size 25 mg
    Substance name rotigotine impurity standard
    Declared content Not applicable
    Current batch 4197
    QTY (Max 25)
  • Search result 2

    Category Number 451
    Pack size 100 mg
    Substance name salbutamol
    Declared content
    99.8% of C13H21NO3
    Current batch 4220
    QTY (Max 25)
  • Search result 3

    Category Number 712
    Pack size 25 mg
    Substance name salbutamol aldehyde impurity
    Declared content Not applicable
    Current batch 3022
    Discontinued
  • Search result 4

    Category Number 852
    Pack size 10 mg
    Substance name salbutamol impurity B
    Declared content Not applicable
    Current batch 4702
    QTY (Max 10)
  • Search result 5

    Category Number 1308
    Pack size 10mg
    Substance name salbutamol impurity Q
    Declared content Not applicable
    Current batch 4780
    QTY (Max 25)
  • Search result 6

    Category Number 1309
    Pack size 10mg
    Substance name salbutamol impurity standard
    Declared content Not applicable
    Current batch 4793
    QTY (Max 25)
  • Search result 7

    Category Number 704
    Pack size 25 mg
    Substance name salbutamol ketone impurity
    Declared content Not applicable
    Current batch 4373
    QTY (Max 10)
  • Search result 8

    Category Number 302
    Pack size 100 mg
    Substance name salbutamol sulfate
    Declared content
    82.7 % of (C13H21NO3)
    99.7 % of C13H21NO3)2, H2SO4
    Current batch 4317
    QTY (Max 25)
  • Search result 9

    Category Number 775
    Pack size 100 mg
    Substance name salicylic acid
    Declared content
    99.8% of C7H6O3
    Current batch 2821
    QTY (Max 25)
  • Search result 10

    Category Number 1181
    Pack size 100 mg
    Substance name salmeterol xinafoate
    Declared content
    68.6% of C25H37NO4
    Current batch 4003
    QTY (Max 25)
  • Search result 11

    Category Number 1182
    Pack size 25 mg
    Substance name salmeterol xinafoate impurity 1
    Declared content Not applicable
    Current batch 4015
    QTY (Max 25)
  • Search result 12

    Category Number 1133
    Pack size 100 mg
    Substance name santonin
    Declared content
    99.6 % of C15H18O3
    Current batch 3664
    QTY (Max 25)
  • Search result 13

    Category Number 0
    Pack size 100 mg
    Substance name santonin
    Declared content
    99.6 % of C15H18O3
    Current batch 3664
    Discontinued
  • Search result 14

    Category Number 705
    Pack size 100 mg
    Substance name selegiline hydrochloride
    Declared content
    99.6% of C13H18ClN
    Current batch 2374
    QTY (Max 2)
  • Search result 15

    Category Number 898
    Pack size 20 mg
    Substance name sertraline cis isomer
    Declared content Not applicable
    Current batch 3364
    Discontinued
  • Search result 16

    Category Number 883
    Pack size 100 mg
    Substance name sertraline hydrochloride
    Declared content
    99.6% of C17H17Cl2N, HCl
    Current batch 3178
    QTY (Max 25)
  • Search result 17

    Category Number 897
    Pack size 20 mg
    Substance name sertraline hydrochloride impurity standard
    Declared content Not applicable
    Current batch 4005
    QTY (Max 25)
  • Search result 18

    Category Number 739
    Pack size 100 mg
    Substance name simvastatin
    Declared content
    99.7% of C25H38O5
    Current batch 2560
    QTY (Max 25)
  • Search result 19

    Category Number 830
    Pack size 100 mg
    Substance name sodium alendronate
    Declared content
    83.5% of C4H12NNAO7P2
    Current batch 2950
    QTY (Max 1)
  • Search result 20

    Category Number 750
    Pack size 1
    Substance name sodium alginate
    Declared content Not applicable
    Current batch
    Discontinued
  • Search result 21

    Category Number 453
    Pack size 200 mg
    Substance name sodium nitroprusside
    Declared content
    100.0% of Na2Fe(CN)5NO, 2H2O
    Current batch 1599
    QTY (Max 25)
  • Search result 22

    Category Number 490
    Pack size 100 mg
    Substance name sodium picosulfate
    Declared content
    94.4% of C18H13NNa2O8S2
    Current batch 4631
    QTY (Max 25)
  • Search result 23

    Category Number 452
    Pack size 500 mg
    Substance name sodium valproate
    Declared content
    98.5% of C8H15NaO2
    Current batch 4170
    QTY (Max 5)
  • Search result 24

    Category Number 1281
    Pack size 100 mg
    Substance name solifenacin succinate
    Declared content
    99.8 % of C27H32N2O6
    Current batch 4527
    QTY (Max 25)
  • Search result 25

    Category Number 1282
    Pack size 25 mg
    Substance name solifenacin succinate impurity standard
    Declared content Not applicable
    Current batch 4509
    QTY (Max 25)