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 555
    Pack size 25 mg
    Substance name 2-trifluoromethylthioxanthone
    CAS Number 1693-28-3
    Quantitative No
    Current batch 4291
    QTY (Max 25)

  • Search result 2

    Category Number 1101
    Pack size 25 mg
    Substance name 2-[4-[(7-chloro-4-quinolinyl)amino]pentyl] amino ethanol
    CAS Number 4298-15-1
    Quantitative No
    Current batch 4393
    QTY (Max 25)

  • Search result 3

    Category Number 341
    Pack size 50 mg
    Substance name 3,5,6-trichloro-2-hydroxybenzoic acid
    CAS Number 40932-60-3
    Quantitative No
    Current batch 4696
    QTY (Max 25)

  • Search result 4

    Category Number 608
    Pack size 25 mg
    Substance name 3-(1,5-dibenzyl-1H-indazole-3-yl)oxypropyldimethylamine hydrochloride
    CAS Number 2196183-71-6
    Quantitative No
    Current batch 4206
    QTY (Max 25)

  • Search result 5

    Category Number 360
    Pack size 25 mg
    Substance name 3-(1-naphthyl)-2-tetrahydrofurfurylpropionic acid
    CAS Number 25379-26-4
    Quantitative No
    Current batch 3314
    QTY (Max 25)

  • Search result 6

    Category Number 124
    Pack size 25 mg
    Substance name 3-(dibenzo[b,e]thiepin-11(6H)-ylidene)-N,N-dimethylaminopropan-1-amine S-oxide hydrochloride
    CAS Number 42046-35-5 (free base)
    Quantitative No
    Current batch 2655
    Discontinued

  • Search result 7

    Category Number 839
    Pack size 25 mg
    Substance name 3-amino-4-(2-chlorophenyl)-6-nitroquinolin-2(1H)-one
    CAS Number 55198-89-5
    Quantitative No
    Current batch 4785
    QTY (Max 25)

  • Search result 8

    Category Number 536
    Pack size 25 mg
    Substance name 3-amino-4-phenoxy-5-sulfamoylbenzoic acid
    CAS Number 28328-54-3
    Quantitative No
    Current batch 4598
    QTY (Max 25)

  • Search result 9

    Category Number 14
    Pack size 50 mg
    Substance name 3-amino-4-propoxybenzoic acid
    CAS Number 59691-14-4
    Quantitative No
    Current batch 3770
    QTY (Max 25)

  • Search result 10

    Category Number 374
    Pack size 50 mg
    Substance name 3-amino-6-chloro-1-methyl-4-phenylquinolin-2(1H)-one
    CAS Number 5220-02-0
    Quantitative No
    Current batch 3959
    QTY (Max 1)