Reference Standards

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.

Search within this catalogue

951 items

  • Search result 1

    Category Number 11
    Pack size 20 mg
    Substance name 7-aminodesacetoxycephalosporanic acid
    CAS Number 22252-43-3
    Quantitative No
    Current batch 3109
    QTY (Max 25)

  • Search result 2

    Category Number 470
    Pack size 25 mg
    Substance name 7-chloro-1-5-dihydro-5-phenyl-1,5-benzodiazepine-2,4(3H)-dione
    CAS Number 22316-55-8
    Quantitative No
    Current batch 1588
    Discontinued

  • Search result 3

    Category Number 626
    Pack size 25 mg
    Substance name 8s-isopropyl-3β-hydroxytropanium bromide
    CAS Number Not applicable
    Quantitative No
    Current batch 4230
    QTY (Max 25)

  • Search result 4

    Category Number 560
    Pack size 25 mg
    Substance name 9-allyl-2-chlorothioxanthen-9-ol
    CAS Number 33049-88-6
    Quantitative No
    Current batch 1848
    QTY (Max 25)

  • Search result 5

    Category Number 2
    Pack size 25 mg
    Substance name <N1,N2>-diquinoxalin-2-ylsulphanilamide
    CAS Number Not applicable
    Quantitative No
    Current batch 1455
    Discontinued

  • Search result 6

    Category Number 1114
    Pack size 20 mg
    Substance name abacavir impurity 1
    CAS Number 120503-69-7
    Quantitative No
    Current batch 4748
    QTY (Max 25)

  • Search result 7

    Category Number 1113
    Pack size 10 mg
    Substance name abacavir impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 3766
    QTY (Max 25)

  • Search result 8

    Category Number 1112
    Pack size 100 mg
    Substance name abacavir sulfate
    CAS Number 188062-50-2
    Quantitative Yes
    Current batch 3637
    QTY (Max 25)

  • Search result 9

    Category Number 1172
    Pack size 100 mg
    Substance name acamprosate calcium
    CAS Number 77337-73-6
    Quantitative Yes
    Current batch 3798
    QTY (Max 25)

  • Search result 10

    Category Number 1
    Pack size 50 mg
    Substance name acepromazine maleate
    CAS Number 3598-37-6
    Quantitative No
    Current batch 2608
    QTY (Max 2)