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.

951 items
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  • Search result 1

    Category Number 646
    Pack size 100 mg
    Substance name dexamethasone phosphate
    Declared content
    99.2% of C22H30FO8P
    Current batch 3634
    Discontinued
  • Search result 2

    Category Number 108
    Pack size 100 mg
    Substance name dexamethasone sodium phosphate
    Declared content
    88.6% of C22H28FNa2O8P
    Current batch 4205
    QTY (Max 25)
  • Search result 3

    Category Number 465
    Pack size 100 mg
    Substance name dextropropoxyphene hydrochloride
    Declared content
    99.7% of C22H29NO2,HCl
    Current batch 2246
    Out of Stock
  • Search result 4

    Category Number 549
    Pack size 200 mg
    Substance name diacetylfluorescein
    Declared content
    97.7% of anhydrous diacetylfluorescein
    Current batch 3997
    QTY (Max 1)
  • Search result 5

    Category Number 887
    Pack size 150 mg
    Substance name diamorphine hydrochloride
    Declared content
    99.3% of C21H23NO5, HCl, H2O
    Current batch 3174
    Out of Stock
  • Search result 6

    Category Number 111
    Pack size 100 mg
    Substance name diazepam
    Declared content Not applicable
    Current batch 4587
    Out of Stock
  • Search result 7

    Category Number 858
    Pack size 100 mg
    Substance name dibenzosuberone
    Declared content Not applicable
    Current batch 3006
    QTY (Max 25)
  • Search result 8

    Category Number 114
    Pack size 25 mg
    Substance name dibenzo[b,e]thiepin-11(6H)-one
    Declared content Not applicable
    Current batch 3040
    QTY (Max 25)
  • Search result 9

    Category Number 116
    Pack size 100 mg
    Substance name dichlorophen
    Declared content
    100.0% of C13H10Cl2O2
    Current batch 1661
    Discontinued
  • Search result 10

    Category Number 420
    Pack size 100 mg
    Substance name dichlorophen impurity standard
    Declared content Not applicable
    Current batch 1858
    QTY (Max 25)
  • Search result 11

    Category Number 598
    Pack size 100 mg
    Substance name diclofenac diethylamine
    Declared content Not applicable
    Current batch 4399
    QTY (Max 25)
  • Search result 12

    Category Number 828
    Pack size 25 mg
    Substance name diclofenac impurity A
    Declared content Not applicable
    Current batch 3918
    QTY (Max 10)
  • Search result 13

    Category Number 619
    Pack size 100 mg
    Substance name diclofenac sodium
    Declared content
    99.6 % of C14H10Cl2NNaO2
    Current batch 4601
    QTY (Max 25)
  • Search result 14

    Category Number 810
    Pack size 250 mg
    Substance name dicloxacillin sodium
    Declared content Not applicable
    Current batch 3428
    QTY (Max 25)
  • Search result 15

    Category Number 989
    Pack size 100 mg
    Substance name dicycloverine hydrochloride
    Declared content Not applicable
    Current batch 3452
    QTY (Max 25)
  • Search result 16

    Category Number 118
    Pack size 100 mg
    Substance name diethanolamine fusidate
    Declared content
    80.9 % of C31H48O6
    84.3 % of C31H47NaO6
    Current batch 4732
    QTY (Max 10)
  • Search result 17

    Category Number 119
    Pack size 50 mg
    Declared content Not applicable
    Current batch 811
    QTY (Max 1)
  • Search result 18

    Category Number 737
    Pack size 100 mg
    Substance name diethylcarbamazine citrate
    Declared content
    99.9% of C10H21N3O,C6H8O7
    Current batch 2571
    QTY (Max 25)
  • Search result 19

    Category Number 859
    Pack size 100 mg
    Substance name diethylstilbestrol
    Declared content
    99.4% of C18H20O2
    Current batch 3019
    QTY (Max 25)
  • Search result 20

    Category Number 677
    Pack size 25 mg
    Substance name diethylstilbestrol monophosphate
    Declared content Not applicable
    Current batch 2253
    Discontinued
  • Search result 21

    Category Number 401
    Pack size 100 mg
    Substance name diflucortolone valerate
    Declared content
    98.8% of C27H36F2O5
    Current batch 3496
    QTY (Max 25)
  • Search result 22

    Category Number 397
    Pack size 25 mg
    Substance name diflucortolone valerate impurity standard
    Declared content Not applicable
    Current batch 1886
    Discontinued
  • Search result 23

    Category Number 855
    Pack size 250 mg
    Substance name digitoxin
    Declared content
    97.9% of C41H64O13
    Current batch 3913
    QTY (Max 25)
  • Search result 24

    Category Number 431
    Pack size 100 mg
    Substance name dihydrocodeine tartrate
    Declared content
    99.7% of C18H23NO3,C4H6O6
    Current batch 4425
    Out of Stock
  • Search result 25

    Category Number 120
    Pack size 25 mg
    Substance name dihydroergocristine mesilate
    Declared content Not applicable
    Current batch 2620
    Discontinued