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 943
    Pack size 2 mL
    Substance name nimodipine impurity A
    CAS Number 85677-93-6
    Quantitative No
    Current batch 4245
    QTY (Max 25)
  • Search result 2

    Category Number 262
    Pack size 100 mg
    Substance name nitrazepam
    CAS Number 146-22-5
    Quantitative Yes
    Current batch 4588
    QTY (Max 25)
  • Search result 3

    Category Number 263
    Pack size 50 mg
    Substance name nitrofurfural diacetate
    CAS Number 92-55-7
    Quantitative No
    Current batch 597
    QTY (Max 25)
  • Search result 4

    Category Number 512
    Pack size 100 mg
    Substance name noradrenaline acid tartrate
    CAS Number 108341-18-0
    Quantitative Yes
    Current batch 4307
    QTY (Max 25)
  • Search result 5

    Category Number 266
    Pack size 50 mg
    Substance name norethisterone
    CAS Number 68-22-4
    Quantitative Yes
    Current batch 4164
    QTY (Max 25)
  • Search result 6

    Category Number 267
    Pack size 100 mg
    Substance name norethisterone acetate
    CAS Number 51-98-9
    Quantitative Yes
    Current batch 2744
    QTY (Max 25)
  • Search result 7

    Category Number 670
    Pack size 100 mg
    Substance name norfloxacin
    CAS Number 70458-96-7
    Quantitative Yes
    Current batch 4960
    QTY (Max 25)
  • Search result 8

    Category Number 714
    Pack size 100 mg
    Substance name norgestrel
    CAS Number 6533-00-2
    Quantitative Yes
    Current batch 3522
    QTY (Max 25)
  • Search result 9

    Category Number 269
    Pack size 200 mg
    Substance name nortriptyline hydrochloride
    CAS Number 894-71-3
    Quantitative Yes
    Current batch 4257
    QTY (Max 25)
  • Search result 10

    Category Number 1288
    Pack size 100 mg
    Substance name ofloxacin
    CAS Number 82419-36-1
    Quantitative Yes
    Current batch 4600
    QTY (Max 25)