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 1158
    Pack size 25 mg
    Substance name risperidone impurity standard
    CAS Number 106266-06-2
    Quantitative No
    Current batch 4504
    QTY (Max 25)
  • Search result 2

    Category Number 586
    Pack size 200 mg
    Substance name ritodrine hydrochloride
    CAS Number 23239-51-2
    Quantitative Yes
    Current batch 1989
    Out of Stock
  • Search result 3

    Category Number 1210
    Pack size 100 mg
    Substance name ritonavir
    CAS Number 155213-67-5
    Quantitative Yes
    Current batch 4096
    QTY (Max 25)
  • Search result 4

    Category Number 1257
    Pack size 100 mg
    Substance name rivastigmine hydrogen tartrate
    CAS Number 129101-54-8
    Quantitative Yes
    Current batch 4434
    QTY (Max 25)
  • Search result 5

    Category Number 1258
    Pack size 950 mg
    Substance name rivastigmine impurity mixture
    CAS Number 129101-54-8
    Quantitative No
    Current batch 4887
    QTY (Max 25)
  • Search result 6

    Category Number 1123
    Pack size 100 mg
    Substance name rizatriptan benzoate
    CAS Number 145202-66-0
    Quantitative Yes
    Current batch 3604
    QTY (Max 1)
  • Search result 7

    Category Number 1330
    Pack size 10mg
    Substance name Ropinirole for peak identification
    CAS Number Not applicable
    Quantitative No
    Current batch 4903
    QTY (Max 25)
  • Search result 8

    Category Number 1328
    Pack size 100mg
    Substance name Ropinirole Hydrochloride
    CAS Number Not applicable
    Quantitative Yes
    Current batch 4901
    QTY (Max 25)
  • Search result 9

    Category Number 1329
    Pack size 25mg
    Substance name Ropinirole Impurity A
    CAS Number Not applicable
    Quantitative No
    Current batch 4902
    QTY (Max 25)
  • Search result 10

    Category Number 1242
    Pack size 100 mg
    Substance name rotigotine
    CAS Number 99755-59-6
    Quantitative Yes
    Current batch 4178
    QTY (Max 25)