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 664
    Pack size 25 mg
    Substance name iminophenazine
    CAS Number 102262-55-5
    Quantitative No
    Current batch 4008
    QTY (Max 2)
  • Search result 2

    Category Number 932
    Pack size 100 mg
    Substance name imipramine hydrochloride
    CAS Number 113-52-0
    Quantitative No
    Current batch 4362
    QTY (Max 25)
  • Search result 3

    Category Number 999
    Pack size 150 mg
    Substance name indapamide
    CAS Number 26807-65-8
    Quantitative Yes
    Current batch 3227
    QTY (Max 25)
  • Search result 4

    Category Number 1000
    Pack size 10 mg
    Substance name indapamide impurity B
    CAS Number 63968-75-2
    Quantitative No
    Current batch 3228
    QTY (Max 25)
  • Search result 5

    Category Number 1336
    Pack size 25mg
    Substance name Indapamide Impurity Standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4921
    QTY (Max 25)
  • Search result 6

    Category Number 1226
    Pack size 300 mg
    Substance name indian sandalwood oil
    CAS Number 8006-87-9
    Quantitative No
    Current batch 4111
    QTY (Max 25)
  • Search result 7

    Category Number 1223
    Pack size 20 mg
    Substance name interferon beta-1a oxidised peptide
    CAS Number 7732-18-5
    Quantitative No
    Current batch 4062
    QTY (Max 25)
  • Search result 8

    Category Number 625
    Pack size 100 mg
    Substance name ipratropium bromide
    CAS Number 66985-17-9
    Quantitative Yes
    Current batch 4185
    QTY (Max 25)
  • Search result 9

    Category Number 1232
    Pack size 25 mg
    Substance name ipratropium bromide impurity D
    CAS Number 492-38-6
    Quantitative No
    Current batch 4156
    QTY (Max 25)
  • Search result 10

    Category Number 1093
    Pack size 125 mg
    Substance name irbesartan
    CAS Number 138402-11-6
    Quantitative Yes
    Current batch 3461
    QTY (Max 25)