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 1074
    Pack size 25 mg
    Substance name perindopril impurity standard
    CAS Number 107133-36-8
    Quantitative No
    Current batch 3444
    QTY (Max 25)
  • Search result 2

    Category Number 422
    Pack size 100 mg
    Substance name perphenazine
    CAS Number 58-39-9
    Quantitative Yes
    Current batch 2627
    Discontinued
  • Search result 3

    Category Number 683
    Pack size 100 mg
    Substance name pethidine hydrochloride
    CAS Number 50-13-5
    Quantitative Yes
    Current batch 4390
    QTY (Max 5)
  • Search result 4

    Category Number 1166
    Pack size 100 mg
    Substance name phenelzine sulfate
    CAS Number 156-51-4
    Quantitative Yes
    Current batch 4704
    QTY (Max 25)
  • Search result 5

    Category Number 1208
    Pack size 100 mg
    Substance name phenindione
    CAS Number 83-12-5
    Quantitative Yes
    Current batch 3962
    QTY (Max 25)
  • Search result 6

    Category Number 1209
    Pack size 25 mg
    Substance name phenindione impurity 1
    CAS Number 3761-46-4
    Quantitative No
    Current batch 4118
    QTY (Max 25)
  • Search result 7

    Category Number 901
    Pack size 100 mg
    Substance name phenobarbital
    CAS Number 50-06-6
    Quantitative Yes
    Current batch 3224
    QTY (Max 25)
  • Search result 8

    Category Number 1072
    Pack size 100 mg
    Substance name phenoxybenzamine hydrochloride
    CAS Number 63-92-3
    Quantitative Yes
    Current batch 3399
    QTY (Max 25)
  • Search result 9

    Category Number 282
    Pack size 500 mg
    Substance name phenoxymethylpenicillin potassium
    CAS Number 132-98-9
    Quantitative Yes
    Current batch 3113
    QTY (Max 2)
  • Search result 10

    Category Number 1099
    Pack size 25 mg
    Substance name phentolamine impurity standard
    CAS Number 65-28-1
    Quantitative No
    Current batch 3672
    QTY (Max 25)