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)

  • Search result 11

    Category Number 904
    Pack size 600 mg
    Substance name acetazolamide
    CAS Number 59-66-5
    Quantitative Yes
    Current batch 4345
    QTY (Max 25)

  • Search result 12

    Category Number 907
    Pack size 200 mg
    Substance name acetylcysteine
    CAS Number 616-91-1
    Quantitative Yes
    Current batch 4501
    QTY (Max 25)

  • Search result 13

    Category Number 438
    Pack size 100 mg
    Substance name aciclovir
    CAS Number 59277-89-3
    Quantitative Yes
    Current batch 4459
    QTY (Max 25)

  • Search result 14

    Category Number 827
    Pack size 100 mg
    Substance name acitretin
    CAS Number 55079-83-9
    Quantitative Yes
    Current batch 2923
    QTY (Max 25)

  • Search result 15

    Category Number 1120
    Pack size 100 mg
    Substance name adapalene
    CAS Number 106685-40-9
    Quantitative Yes
    Current batch 4632
    QTY (Max 25)

  • Search result 16

    Category Number 1121
    Pack size 10 mg
    Substance name adapalene impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4839
    QTY (Max 25)

  • Search result 17

    Category Number 3
    Pack size 100 mg
    Substance name adrenaline acid tartrate
    CAS Number 51-42-3
    Quantitative Yes
    Current batch 4582
    QTY (Max 25)

  • Search result 18

    Category Number 1251
    Pack size 25 mg
    Substance name adrenaline impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4280
    Out of Stock

  • Search result 19

    Category Number 763
    Pack size 100 mg
    Substance name albendazole
    CAS Number 54965-21-8
    Quantitative Yes
    Current batch 4094
    QTY (Max 25)

  • Search result 20

    Category Number 436
    Pack size 1 g
    Substance name alexandrian senna fruit powder
    CAS Number Not applicable
    Quantitative Yes
    Current batch 4814
    QTY (Max 1)

  • Search result 21

    Category Number 6
    Pack size 100 mg
    Substance name alfadolone acetate
    CAS Number 23930-37-2
    Quantitative Yes
    Current batch 2510
    QTY (Max 25)

  • Search result 22

    Category Number 7
    Pack size 100 mg
    Substance name alfaxalone
    CAS Number 23930-19-0
    Quantitative Yes
    Current batch 2191
    Discontinued

  • Search result 23

    Category Number 825
    Pack size 100 mg
    Substance name alfuzosin hydrochloride
    CAS Number 81403-68-1
    Quantitative Yes
    Current batch 2994
    QTY (Max 25)

  • Search result 24

    Category Number 847
    Pack size 25 mg
    Substance name alfuzosin impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 3359
    QTY (Max 25)

  • Search result 25

    Category Number 415
    Pack size 100 mg
    Substance name alimemazine tartrate
    CAS Number 4330-99-8
    Quantitative Yes
    Current batch 4752
    QTY (Max 25)

  • Search result 26

    Category Number 870
    Pack size 200 mg
    Substance name allopurinol
    CAS Number 315-30-0
    Quantitative Yes
    Current batch 3098
    QTY (Max 25)

  • Search result 27

    Category Number 831
    Pack size 20 mg
    Substance name allopurinol impurity A
    CAS Number 27511-79-1
    Quantitative No
    Current batch 4747
    QTY (Max 25)

  • Search result 28

    Category Number 832
    Pack size 10 mg
    Substance name allopurinol impurity B
    CAS Number 22407-20-1
    Quantitative No
    Current batch 2948
    QTY (Max 25)

  • Search result 29

    Category Number 843
    Pack size 10 mg
    Substance name allopurinol impurity C
    CAS Number 1346604-13-4
    Quantitative No
    Current batch 3179
    QTY (Max 25)

  • Search result 30

    Category Number 844
    Pack size 10 mg
    Substance name allopurinol impurity D
    CAS Number 6994-25-8
    Quantitative No
    Current batch 3180
    QTY (Max 25)

  • Search result 31

    Category Number 845
    Pack size 20 mg
    Substance name allopurinol impurity E
    CAS Number 31055-19-3
    Quantitative No
    Current batch 3181
    QTY (Max 25)

  • Search result 32

    Category Number 725
    Pack size 100 mg
    Substance name alverine citrate
    CAS Number 5560-59-8
    Quantitative Yes
    Current batch 4232
    QTY (Max 25)

  • Search result 33

    Category Number 724
    Pack size 1 mL
    Substance name alverine citrate impurity standard solution
    CAS Number Not applicable
    Quantitative No
    Current batch 4162
    QTY (Max 10)

  • Search result 34

    Category Number 530
    Pack size 200 mg
    Substance name amantadine hydrochloride
    CAS Number 665-66-7
    Quantitative Yes
    Current batch 1785
    QTY (Max 1)

  • Search result 35

    Category Number 853
    Pack size 200 mg
    Substance name amikacin sulfate
    CAS Number 39831-55-5
    Quantitative Yes
    Current batch 4250
    QTY (Max 25)

  • Search result 36

    Category Number 8
    Pack size 100 mg
    Substance name amiloride hydrochloride
    CAS Number 17440-83-4
    Quantitative Yes
    Current batch 3411
    QTY (Max 25)

  • Search result 37

    Category Number 684
    Pack size 100 mg
    Substance name aminoglutethimide
    CAS Number 125-84-8
    Quantitative Yes
    Current batch 2375
    Discontinued

  • Search result 38

    Category Number 881
    Pack size 20 mg
    Substance name aminoglutethimide impurity A
    CAS Number Not applicable
    Quantitative No
    Current batch 3126
    Discontinued

  • Search result 39

    Category Number 956
    Pack size 10 mg
    Substance name aminoglutethimide impurity D
    CAS Number Not applicable
    Quantitative No
    Current batch 3365
    Discontinued

  • Search result 40

    Category Number 532
    Pack size 100 mg
    Substance name amiodarone hydrochloride
    CAS Number 19774-82-4
    Quantitative Yes
    Current batch 3407
    QTY (Max 25)