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.

New customer rules in Egypt

New customs rules in Egypt means additional actions are required by purchasers of the BPCRS if your order is over the value of £1600 or the shipment weighs more than 50kg. Please refer to the Egypt shipments guidance to learn what steps you will need to take if your order meets this criteria.  

970 items
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  • Search result 1

    Category Number 656
    Pack size 25 mg
    Substance name famotidine degradation impurity 2
    CAS Number 76824-16-3
    Quantitative No
    Current batch 3068
    Discontinued
  • Search result 2

    Category Number 654
    Pack size 25 mg
    Substance name famotidine impurity C
    CAS Number 106433-44-7
    Quantitative No
    Current batch 3799
    QTY (Max 25)
  • Search result 3

    Category Number 620
    Pack size 100 mg
    Substance name felbinac
    CAS Number 5728-52-9
    Quantitative Yes
    Current batch 4395
    QTY (Max 25)
  • Search result 4

    Category Number 777
    Pack size 100 mg
    Substance name felodipine
    CAS Number 72509-76-3
    Quantitative Yes
    Current batch 2825
    QTY (Max 25)
  • Search result 5

    Category Number 758
    Pack size 20 mg
    Substance name felodipine impurity standard
    CAS Number 72509-76-3
    Quantitative No
    Current batch 2856
    QTY (Max 25)
  • Search result 6

    Category Number 692
    Pack size 100 mg
    Substance name fenbendazole
    CAS Number 43210-67-9
    Quantitative Yes
    Current batch 4820
    QTY (Max 25)
  • Search result 7

    Category Number 693
    Pack size 25 mg
    Substance name fenbendazole impurity 1
    CAS Number 53065-28-4
    Quantitative No
    Current batch 4621
    QTY (Max 25)
  • Search result 8

    Category Number 354
    Pack size 100 mg
    Substance name fenbufen
    CAS Number 36330-85-5
    Quantitative Yes
    Current batch 1871
    Discontinued
  • Search result 9

    Category Number 1280
    Pack size 100mg
    Substance name fenofibrate
    CAS Number 49562-28-9
    Quantitative Yes
    Current batch 4596
    QTY (Max 25)
  • Search result 10

    Category Number 661
    Pack size 25 mg
    Substance name fenoterol degradation impurity A
    CAS Number 161040-25-1
    Quantitative No
    Current batch 3744
    Discontinued
  • Search result 11

    Category Number 660
    Pack size 100 mg
    Substance name fenoterol hydrobromide
    CAS Number 1944-12-3
    Quantitative Yes
    Current batch 3879
    Discontinued
  • Search result 12

    Category Number 665
    Pack size 100 mg
    Substance name fentanyl citrate
    CAS Number 990-73-8
    Quantitative Yes
    Current batch 4391
    QTY (Max 5)
  • Search result 13

    Category Number 666
    Pack size 25 mg
    Substance name fentanyl impurity A
    CAS Number 85893-37-4
    Quantitative No
    Current batch 4321
    Discontinued
  • Search result 14

    Category Number 156
    Pack size 0.25 mL
    Substance name fenthion
    CAS Number 55-38-9
    Quantitative Yes
    Current batch 2679
    Discontinued
  • Search result 15

    Category Number 1095
    Pack size 100 mg
    Substance name fexofenadine hydrochloride
    CAS Number 153439-40-8
    Quantitative Yes
    Current batch 3476
    QTY (Max 25)
  • Search result 16

    Category Number 1096
    Pack size 25 mg
    Substance name fexofenadine impurity standard
    CAS Number 153439-40-8
    Quantitative No
    Current batch 3679
    QTY (Max 25)
  • Search result 17

    Category Number 740
    Pack size 100 mg
    Substance name finasteride
    CAS Number 98319-26-7
    Quantitative Yes
    Current batch 2559
    QTY (Max 25)
  • Search result 18

    Category Number 571
    Pack size 100 mg
    Substance name flavoxate hydrochloride
    CAS Number 3717-88-2
    Quantitative Yes
    Current batch 2263
    QTY (Max 2)
  • Search result 19

    Category Number 676
    Pack size 100 mg
    Substance name flecainide acetate
    CAS Number 54143-56-5
    Quantitative Yes
    Current batch 4492
    QTY (Max 25)
  • Search result 20

    Category Number 158
    Pack size 250 mg
    Substance name flucloxacillin sodium
    CAS Number 1847-24-1
    Quantitative Yes
    Current batch 4735
    QTY (Max 25)
  • Search result 21

    Category Number 1174
    Pack size 100 mg
    Substance name fluconazole
    CAS Number 86386-73-4
    Quantitative Yes
    Current batch 4290
    QTY (Max 25)
  • Search result 22

    Category Number 1175
    Pack size 50 mg
    Substance name fluconazole impurity standard
    CAS Number 86386-73-4
    Quantitative No
    Current batch 4934
    QTY (Max 2)
  • Search result 23

    Category Number 1321
    Pack size 100mg
    Substance name fludarabine phosphate
    CAS Number 75607-67-9
    Quantitative Yes
    Current batch 4844
    QTY (Max 25)
  • Search result 24

    Category Number 159
    Pack size 50 mg
    Substance name fludrocortisone acetate
    CAS Number 514-36-3
    Quantitative Yes
    Current batch 3842
    QTY (Max 25)
  • Search result 25

    Category Number 1156
    Pack size 100 mg
    Substance name flumetasone pivalate
    CAS Number 2002-29-1
    Quantitative Yes
    Current batch 3827
    QTY (Max 25)
  • Search result 26

    Category Number 840
    Pack size 25 mg
    Substance name flunitrazepam
    CAS Number 1622-62-4
    Quantitative No
    Current batch 2980
    QTY (Max 25)
  • Search result 27

    Category Number 160
    Pack size 50 mg
    Substance name fluocinolone acetonide
    CAS Number 67-73-2
    Quantitative Yes
    Current batch 3996
    QTY (Max 25)
  • Search result 28

    Category Number 489
    Pack size 100 mg
    Substance name fluocinonide
    CAS Number 356-12-7
    Quantitative Yes
    Current batch 1730
    QTY (Max 2)
  • Search result 29

    Category Number 161
    Pack size 50 mg
    Substance name fluocortolone hexanoate
    CAS Number 303-40-2
    Quantitative Yes
    Current batch 2111
    Discontinued
  • Search result 30

    Category Number 162
    Pack size 50 mg
    Substance name fluocortolone pivalate
    CAS Number 29205-06-9
    Quantitative Yes
    Current batch 1610
    Discontinued
  • Search result 31

    Category Number 573
    Pack size 100 mg
    Substance name fluorometholone
    CAS Number 426-13-1
    Quantitative Yes
    Current batch 3009
    QTY (Max 25)
  • Search result 32

    Category Number 995
    Pack size 40 mg
    Substance name fluorouracil
    CAS Number 51-21-8
    Quantitative No
    Current batch 3246
    QTY (Max 25)
  • Search result 33

    Category Number 797
    Pack size 250 mg
    Substance name fluoxetine hydrochloride
    CAS Number 56296-78-7
    Quantitative Yes
    Current batch 4832
    QTY (Max 25)
  • Search result 34

    Category Number 164
    Pack size 50 mg
    Substance name fluoxymesterone
    CAS Number 76-43-7
    Quantitative No
    Current batch 2995
    QTY (Max 25)
  • Search result 35

    Category Number 554
    Pack size 100 mg
    Substance name flupentixol decanoate dihydrochloride
    CAS Number 30909-51-4
    Quantitative Yes
    Current batch 3084
    QTY (Max 25)
  • Search result 36

    Category Number 1132
    Pack size 100 mg
    Substance name flupentixol dihydrochloride
    CAS Number 2413-38-9
    Quantitative Yes
    Current batch 4727
    QTY (Max 25)
  • Search result 37

    Category Number 167
    Pack size 100 mg
    Substance name fluphenazine hydrochloride
    CAS Number 146-56-5
    Quantitative Yes
    Current batch 3749
    QTY (Max 25)
  • Search result 38

    Category Number 574
    Pack size 100 mg
    Substance name flurbiprofen sodium
    CAS Number 56767-76-1
    Quantitative Yes
    Current batch 4060
    QTY (Max 25)
  • Search result 39

    Category Number 587
    Pack size 100 mg
    Substance name fluticasone propionate
    CAS Number 80474-14-2
    Quantitative Yes
    Current batch 4030
    QTY (Max 25)
  • Search result 40

    Category Number 588
    Pack size 25 mg
    Substance name fluticasone S-methyl impurity
    CAS Number 73205-13-7
    Quantitative No
    Current batch 3322
    Discontinued