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.

The BPCRS Catalogue is now available for download in Excel format, updated monthly to reflect the latest listings.

New customer rules in Egypt

New customs rules in Egypt means additional actions are required by purchasers of the BPCRS if your order is over the value of £1600 or the shipment weighs more than 50kg. Please refer to the Egypt shipments guidance to learn what steps you will need to take if your order meets this criteria.  

970 items
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  • Search result 1

    Category Number 1027
    Pack size 100 mg
    Substance name piperacillin
    CAS Number 66258-76-2
    Quantitative Yes
    Current batch 4583
    QTY (Max 25)
  • Search result 2

    Category Number 1171
    Pack size 250 mg
    Substance name piperonyl butoxide
    CAS Number 51-03-6
    Quantitative Yes
    Current batch 4490
    QTY (Max 25)
  • Search result 3

    Category Number 1176
    Pack size 100 mg
    Substance name piperonyl butoxide impurity standard
    CAS Number 51-03-6
    Quantitative No
    Current batch 3886
    QTY (Max 25)
  • Search result 4

    Category Number 463
    Pack size 100 mg
    Substance name piroxicam
    CAS Number 36322-90-4
    Quantitative Yes
    Current batch 4404
    QTY (Max 25)
  • Search result 5

    Category Number 411
    Pack size 50 mg
    Substance name pizotifen malate
    CAS Number 5189-11-7
    Quantitative Yes
    Current batch 3471
    QTY (Max 5)
  • Search result 6

    Category Number 288
    Pack size 100 mg
    Substance name poldine metilsulfate
    CAS Number 545-80-2
    Quantitative Yes
    Current batch 2432
    Discontinued
  • Search result 7

    Category Number 1028
    Pack size 100 mg
    Substance name polymyxin B sulfate
    CAS Number 1405-20-5
    Quantitative No
    Current batch 4128
    QTY (Max 25)
  • Search result 8

    Category Number 289
    Pack size 100 mg
    Substance name polythiazide
    CAS Number 346-18-9
    Quantitative Yes
    Current batch 1449
    QTY (Max 25)
  • Search result 9

    Category Number 510
    Pack size 25 mg
    Substance name potassium trichloroammineplatinate
    CAS Number 13820-91-2
    Quantitative No
    Current batch 4396
    QTY (Max 25)
  • Search result 10

    Category Number 1203
    Pack size 100 mg
    Substance name pramipexole
    CAS Number 191217-81-9
    Quantitative Yes
    Current batch 3969
    QTY (Max 25)