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 1204
    Pack size 25 mg
    Substance name pramipexole impurity A
    CAS Number 106092-09-5
    Quantitative No
    Current batch 3970
    QTY (Max 25)
  • Search result 2

    Category Number 1029
    Pack size 100 mg
    Substance name pravastatin 1,1,3,3,-tetramethylbutylamine
    CAS Number 151006-14-3
    Quantitative Yes
    Current batch 3323
    QTY (Max 1)
  • Search result 3

    Category Number 1030
    Pack size 10 mg
    Substance name pravastatin impurity A
    CAS Number 250737-12-3
    Quantitative No
    Current batch 3324
    QTY (Max 25)
  • Search result 4

    Category Number 399
    Pack size 100 mg
    Substance name prazosin hydrochloride
    CAS Number 19237-84-4
    Quantitative Yes
    Current batch 4140
    QTY (Max 25)
  • Search result 5

    Category Number 464
    Pack size 100 mg
    Substance name prednisolone
    CAS Number 50-24-8
    Quantitative Yes
    Current batch 3757
    QTY (Max 10)
  • Search result 6

    Category Number 1140
    Pack size 100 mg
    Substance name prednisolone acetate
    CAS Number 52-21-1
    Quantitative Yes
    Current batch 3609
    QTY (Max 5)
  • Search result 7

    Category Number 292
    Pack size 100 mg
    Substance name prednisolone sodium phosphate
    CAS Number 125-02-0
    Quantitative Yes
    Current batch 4493
    QTY (Max 25)
  • Search result 8

    Category Number 553
    Pack size 200 mg
    Substance name prednisone
    CAS Number 53-03-2
    Quantitative No
    Current batch 4720
    QTY (Max 25)
  • Search result 9

    Category Number 1264
    Pack size 100 mg
    Substance name pregabalin
    CAS Number 148553-50-8
    Quantitative Yes
    Current batch 4405
    QTY (Max 25)
  • Search result 10

    Category Number 1266
    Pack size 25 mg
    Substance name pregabalin impurity standard
    CAS Number 148553-50-8
    Quantitative No
    Current batch 4893
    QTY (Max 25)