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 754
    Pack size 25 mg
    Substance name ramipril impurity K
    CAS Number 108736-10-3
    Quantitative No
    Current batch 3555
    QTY (Max 25)
  • Search result 2

    Category Number 471
    Pack size 100 mg
    Substance name ranitidine hydrochloride
    CAS Number 66357-59-3
    Quantitative Yes
    Current batch 3987
    QTY (Max 25)
  • Search result 3

    Category Number 1240
    Pack size 100 mg
    Substance name repaglinide
    CAS Number 135062-02-1
    Quantitative Yes
    Current batch 4172
    QTY (Max 25)
  • Search result 4

    Category Number 1252
    Pack size 2 mL
    Substance name repaglinide impurity standard solution
    CAS Number 67-56-1
    Quantitative No
    Current batch 4305
    QTY (Max 25)
  • Search result 5

    Category Number 593
    Pack size 100 mg
    Substance name ribavirin
    CAS Number 36791-04-5
    Quantitative Yes
    Current batch 1980
    QTY (Max 25)
  • Search result 6

    Category Number 592
    Pack size 50 mg
    Substance name ribavirin impurity standard
    CAS Number 36791-04-5
    Quantitative No
    Current batch 2015
    QTY (Max 2)
  • Search result 7

    Category Number 459
    Pack size 50 mg
    Substance name riboflavin sodium phosphate
    CAS Number 130-40-5
    Quantitative No
    Current batch 3382
    QTY (Max 25)
  • Search result 8

    Category Number 400
    Pack size 25 mg
    Substance name rifampicin N-oxide
    CAS Number 51963-55-4
    Quantitative No
    Current batch 4025
    QTY (Max 25)
  • Search result 9

    Category Number 1241
    Pack size 100 mg
    Substance name risedronate sodium 2.5-hydrate
    CAS Number 329003-65-8
    Quantitative Yes
    Current batch 4157
    QTY (Max 25)
  • Search result 10

    Category Number 1137
    Pack size 100 mg
    Substance name risperidone
    CAS Number 106266-06-2
    Quantitative Yes
    Current batch 3568
    QTY (Max 25)