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 1256
    Pack size 100 mg
    Substance name nadolol
    CAS Number 42200-33-9
    Quantitative Yes
    Current batch 4263
    QTY (Max 25)
  • Search result 2

    Category Number 362
    Pack size 100 mg
    Substance name naftidrofuryl oxalate
    CAS Number 3200-06-4
    Quantitative Yes
    Current batch 4837
    QTY (Max 10)
  • Search result 3

    Category Number 548
    Pack size 100 mg
    Substance name naloxone hydrochloride
    CAS Number 357-08-4
    Quantitative Yes
    Current batch 4451
    QTY (Max 25)
  • Search result 4

    Category Number 257
    Pack size 100 mg
    Substance name nandrolone
    CAS Number 434-22-0
    Quantitative Yes
    Current batch 4050
    Discontinued
  • Search result 5

    Category Number 425
    Pack size 50 mg
    Substance name nandrolone decanoate
    CAS Number 360-70-3
    Quantitative No
    Current batch 2501
    Discontinued
  • Search result 6

    Category Number 259
    Pack size 50 mg
    Substance name nandrolone laurate
    CAS Number 26490-31-3
    Quantitative No
    Current batch 2709
    QTY (Max 25)
  • Search result 7

    Category Number 260
    Pack size 100 mg
    Substance name nandrolone phenylpropionate
    CAS Number 62-90-8
    Quantitative Yes
    Current batch 2683
    Discontinued
  • Search result 8

    Category Number 435
    Pack size 100 mg
    Substance name naproxen
    CAS Number 22204-53-1
    Quantitative Yes
    Current batch 4618
    QTY (Max 25)
  • Search result 9

    Category Number 1260
    Pack size 50 mg
    Substance name naproxen impurity standard
    CAS Number 3900-45-6
    Quantitative No
    Current batch 4463
    QTY (Max 25)
  • Search result 10

    Category Number 1270
    Pack size 200 mg
    Substance name nevirapine
    CAS Number 129618-40-2
    Quantitative Yes
    Current batch 4488
    QTY (Max 25)