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

955 items

  • Search result 1

    Category Number 855
    Pack size 250 mg
    Substance name digitoxin
    CAS Number 71-63-6
    Quantitative Yes
    Current batch 3913
    QTY (Max 25)

  • Search result 2

    Category Number 431
    Pack size 100 mg
    Substance name dihydrocodeine tartrate
    CAS Number 5965-13-9
    Quantitative Yes
    Current batch 4873
    QTY (Max 25)

  • Search result 3

    Category Number 120
    Pack size 25 mg
    Substance name dihydroergocristine mesilate
    CAS Number 24730-10-7
    Quantitative No
    Current batch 2620
    Discontinued

  • Search result 4

    Category Number 726
    Pack size 100 mg
    Substance name diltiazem hydrochloride
    CAS Number 33286-22-5
    Quantitative Yes
    Current batch 3220
    QTY (Max 25)

  • Search result 5

    Category Number 899
    Pack size 25 mg
    Substance name diltiazem impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 3358
    QTY (Max 25)

  • Search result 6

    Category Number 865
    Pack size 25 mg
    Substance name dimethyl-2,6-dimethyl-4-(2-nitrophenyl)pyridine-3,5-dicarboxylate
    CAS Number 67035-22-7
    Quantitative No
    Current batch 3071
    QTY (Max 25)

  • Search result 7

    Category Number 866
    Pack size 25 mg
    Substance name dimethyl-2,6-dimethyl-4-(2-nitrosophenyl)pyridine-3,5-dicarboxylate
    CAS Number 50428-14-3
    Quantitative No
    Current batch 3072
    QTY (Max 25)

  • Search result 8

    Category Number 511
    Pack size 25 mg
    Substance name dimethyl{5-[2-(1-methylamino-2-nitrovinylamino)ethylsulfinylmethyl]furfuryl}amine
    CAS Number 73851-70-4
    Quantitative No
    Current batch 4069
    QTY (Max 25)

  • Search result 9

    Category Number 690
    Pack size 100 mg
    Substance name dimpylate
    CAS Number 333-41-5
    Quantitative Yes
    Current batch 4731
    QTY (Max 5)

  • Search result 10

    Category Number 691
    Pack size 100 mg
    Substance name dimpylate for chromatography
    CAS Number 333-41-5
    Quantitative No
    Current batch 4375
    QTY (Max 1)