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 1185
    Pack size 1 ng
    Substance name trnH-psbA
    CAS Number Not applicable
    Quantitative No
    Current batch 3837
    QTY (Max 25)
  • Search result 2

    Category Number 1047
    Pack size 50 mg
    Substance name tropicamide
    CAS Number 1508-75-4
    Quantitative No
    Current batch 3350
    QTY (Max 1)
  • Search result 3

    Category Number 1064
    Pack size 100 mg
    Substance name trospium chloride
    CAS Number 10405-02-4
    Quantitative Yes
    Current batch 3280
    QTY (Max 25)
  • Search result 4

    Category Number 1155
    Pack size 25 mg
    Substance name trospium chloride impurity standard
    CAS Number 10405-02-4
    Quantitative No
    Current batch 3752
    QTY (Max 25)
  • Search result 5

    Category Number 349
    Pack size 50 mg
    Substance name tylosin
    CAS Number 1401-69-0
    Quantitative No
    Current batch 1226
    QTY (Max 2)
  • Search result 6

    Category Number 1326
    Pack size 25mg
    Substance name Tyrosine
    CAS Number Not applicable
    Quantitative No
    Current batch 4899
    QTY (Max 25)
  • Search result 7

    Category Number 350
    Pack size 1 g
    Substance name urea
    CAS Number 57-13-6
    Quantitative Yes
    Current batch 4123
    QTY (Max 25)
  • Search result 8

    Category Number 706
    Pack size 150 mg
    Substance name ursodeoxycholic acid
    CAS Number 128-13-2
    Quantitative Yes
    Current batch 4497
    QTY (Max 25)
  • Search result 9

    Category Number 1142
    Pack size 50 mg
    Substance name ursodeoxycholic acid impurity standard
    CAS Number 128-13-2
    Quantitative No
    Current batch 4878
    QTY (Max 25)
  • Search result 10

    Category Number 1194
    Pack size 100 mg
    Substance name valaciclovir hydrochloride
    CAS Number 124832-27-5
    Quantitative Yes
    Current batch 3893
    QTY (Max 25)