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.

Search within this catalogue

22 items

  • Search result 1

    Category Number 364
    Pack size 25 mg
    Substance name 2,2-dimethyl-5-(2,4-xylyloxy)valeric acid
    Declared content Not applicable
    Current batch 2599
    E-mail to order:  bpcrs@mhra.gov.uk

  • Search result 2

    Category Number 122
    Pack size 50 mg
    Substance name 2,3-dihydro-6-phenylimidazo[2,1,b]-thiazole
    Declared content Not applicable
    Current batch 4480
    QTY (Max 25)

  • Search result 3

    Category Number 526
    Pack size 100 mg
    Substance name 2-(2-hydroxyethyl)-1-methylpyrrolidine
    Declared content Not applicable
    Current batch 4112
    QTY (Max 25)

  • Search result 4

    Category Number 77
    Pack size 25 mg
    Substance name 2-(6-chlorothymoxy)ethyldimethylamine hydrochloride
    Declared content Not applicable
    Current batch
    Discontinued

  • Search result 5

    Category Number 194
    Pack size 25 mg
    Substance name 2-(6-hydroxythymoxy)ethyldimethylamine hydrochloride
    Declared content Not applicable
    Current batch 2040
    QTY (Max 25)

  • Search result 6

    Category Number 46
    Pack size 25 mg
    Substance name 2-(biphenyl-4-yl)propionic acid
    Declared content Not applicable
    Current batch 3069
    QTY (Max 25)

  • Search result 7

    Category Number 417
    Pack size 50 mg
    Substance name 2-amino-1-(4-nitrophenyl)propane-1,3-diol
    Declared content Not applicable
    Current batch 4163
    QTY (Max 25)

  • Search result 8

    Category Number 12
    Pack size 50 mg
    Substance name 2-amino-4,6-dichlorophenol hydrochloride
    Declared content Not applicable
    Current batch 4794
    QTY (Max 25)

  • Search result 9

    Category Number 813
    Pack size 25 mg
    Substance name 2-amino-5-chloropyridine
    Declared content Not applicable
    Current batch 4503
    QTY (Max 25)

  • Search result 10

    Category Number 24
    Pack size 50 mg
    Substance name 2-azahypoxanthine
    Declared content Not applicable
    Current batch 3147
    QTY (Max 25)

  • Search result 11

    Category Number 613
    Pack size 25 mg
    Substance name 2-bromobenzyldimethylamine hydrochloride
    Declared content Not applicable
    Current batch 2420
    QTY (Max 25)

  • Search result 12

    Category Number 477
    Pack size 25 mg
    Substance name 2-carbamoyl-1-methyl-3-[2-(5-methylimidazol-4-ylmethylthio)ethyl]guanidine dihydrochloride
    Declared content Not applicable
    Current batch 3332
    QTY (Max 25)

  • Search result 13

    Category Number 559
    Pack size 25 mg
    Substance name 2-chlorothioxanthone
    Declared content Not applicable
    Current batch 1846
    QTY (Max 25)

  • Search result 14

    Category Number 79
    Pack size 25 mg
    Substance name 2-chlorotritanol
    Declared content Not applicable
    Current batch 4333
    QTY (Max 25)

  • Search result 15

    Category Number 478
    Pack size 25 mg
    Substance name 2-cyano-1-methyl-3-[2-(5-methylimidazol-4-ylmethylsulfinyl)ethyl]guanidine
    Declared content Not applicable
    Current batch 4034
    QTY (Max 25)

  • Search result 16

    Category Number 361
    Pack size 25 mg
    Substance name 2-diethylaminoethyl-3-(1-naphthyl)-2-(1-naphthylmethyl)propionate oxalate
    Declared content Not applicable
    Current batch 4180
    QTY (Max 5)

  • Search result 17

    Category Number 244
    Pack size 50 mg
    Substance name 2-methyl-5-nitroimidazole
    Declared content Not applicable
    Current batch 2809
    QTY (Max 25)

  • Search result 18

    Category Number 457
    Pack size 50 mg
    Substance name 2-methyl-6-methylaminoheptan-2-ol
    Declared content Not applicable
    Current batch 1648
    QTY (Max 25)

  • Search result 19

    Category Number 192
    Pack size 25 mg
    Substance name 2-tert-butylamino-1-(4-hydroxy-3-methylphenyl)ethanol
    Declared content Not applicable
    Current batch 3891
    QTY (Max 25)

  • Search result 20

    Category Number 332
    Pack size 25 mg
    Substance name 2-thymoxyethyldimethylamine hydrochloride
    Declared content Not applicable
    Current batch 1778
    QTY (Max 25)