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 118
    Pack size 100 mg
    Substance name diethanolamine fusidate
    CAS Number 16391-75-6
    Quantitative Yes
    Current batch 4732
    QTY (Max 10)

  • Search result 2

    Category Number 119
    Pack size 50 mg
    Substance name diethyl-4-decyloxy-3-ethoxyanilino-methylenemalonate
    CAS Number 26692-07-9
    Quantitative No
    Current batch 811
    QTY (Max 1)

  • Search result 3

    Category Number 737
    Pack size 100 mg
    Substance name diethylcarbamazine citrate
    CAS Number 1642-54-2
    Quantitative Yes
    Current batch 2571
    QTY (Max 25)

  • Search result 4

    Category Number 859
    Pack size 100 mg
    Substance name diethylstilbestrol
    CAS Number 56-53-1
    Quantitative Yes
    Current batch 3019
    QTY (Max 25)

  • Search result 5

    Category Number 677
    Pack size 25 mg
    Substance name diethylstilbestrol monophosphate
    CAS Number Not applicable
    Quantitative No
    Current batch 2253
    Discontinued

  • Search result 6

    Category Number 401
    Pack size 100 mg
    Substance name diflucortolone valerate
    CAS Number 59198-70-8
    Quantitative Yes
    Current batch 3496
    QTY (Max 25)

  • Search result 7

    Category Number 397
    Pack size 25 mg
    Substance name diflucortolone valerate impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 1886
    Discontinued

  • Search result 8

    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 9

    Category Number 431
    Pack size 100 mg
    Substance name dihydrocodeine tartrate
    CAS Number 5965-13-9
    Quantitative Yes
    Current batch 4425
    QTY (Max 25)

  • Search result 10

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

  • Search result 11

    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 12

    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 13

    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 14

    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 15

    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 16

    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 17

    Category Number 691
    Pack size 100 mg
    Substance name dimpylate for chromatography
    CAS Number 333-41-5
    Quantitative No
    Current batch 4375
    QTY (Max 2)

  • Search result 18

    Category Number 902
    Pack size 100 mg
    Substance name dinoprostone
    CAS Number 363-24-6
    Quantitative Yes
    Current batch 3328
    Discontinued

  • Search result 19

    Category Number 896
    Pack size 100 mg
    Substance name diphenhydramine hydrochloride
    CAS Number 147-24-0
    Quantitative Yes
    Current batch 3764
    QTY (Max 25)

  • Search result 20

    Category Number 1119
    Pack size 25 mg
    Substance name diphenylmethanol
    CAS Number 91-01-0
    Quantitative No
    Current batch 3574
    QTY (Max 25)