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 1060
    Pack size 100 mg
    Substance name olanzapine
    CAS Number 132539-06-1
    Quantitative Yes
    Current batch 3245
    QTY (Max 1)
  • Search result 2

    Category Number 1173
    Pack size 100 mg
    Substance name olmesartan medoxomil
    CAS Number 144689-63-4
    Quantitative Yes
    Current batch 3802
    QTY (Max 25)
  • Search result 3

    Category Number 765
    Pack size 100 mg
    Substance name omeprazole
    CAS Number 73590-58-6
    Quantitative Yes
    Current batch 4311
    QTY (Max 25)
  • Search result 4

    Category Number 1297
    Pack size 10mg
    Substance name omeprazole impurity standard
    CAS Number 73590-58-6
    Quantitative No
    Current batch 4875
    QTY (Max 25)
  • Search result 5

    Category Number 805
    Pack size 25 mg
    Substance name ondansetron for TLC system suitability
    CAS Number Not applicable
    Quantitative No
    Current batch 4353
    QTY (Max 25)
  • Search result 6

    Category Number 808
    Pack size 100 mg
    Substance name ondansetron hydrochloride dihydrate
    CAS Number 103639-04-9
    Quantitative Yes
    Current batch 2897
    QTY (Max 1)
  • Search result 7

    Category Number 806
    Pack size 25 mg
    Substance name ondansetron impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4379
    QTY (Max 25)
  • Search result 8

    Category Number 272
    Pack size 1
    Substance name orciprenaline sulfate
    CAS Number 5874-97-5
    Quantitative Not applicable
    Current batch
    Discontinued
  • Search result 9

    Category Number 903
    Pack size 100 mg
    Substance name oseltamivir phosphate
    CAS Number 204255-11-8
    Quantitative Yes
    Current batch 3236
    QTY (Max 25)
  • Search result 10

    Category Number 1021
    Pack size 50 mg
    Substance name oxazepam
    CAS Number 604-75-1
    Quantitative No
    Current batch 3223
    QTY (Max 25)