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 331
    Pack size 100 mg
    Substance name thiotepa
    CAS Number 52-24-4
    Quantitative Yes
    Current batch 4815
    QTY (Max 1)
  • Search result 2

    Category Number 848
    Pack size 100 mg
    Substance name tibolone
    CAS Number 5630-53-5
    Quantitative Yes
    Current batch 4413
    QTY (Max 25)
  • Search result 3

    Category Number 849
    Pack size 10 mg
    Substance name tibolone impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4210
    QTY (Max 25)
  • Search result 4

    Category Number 1086
    Pack size 50 mg
    Substance name ticarcillin impurity A
    CAS Number 36041-93-7
    Quantitative No
    Current batch 3424
    QTY (Max 25)
  • Search result 5

    Category Number 1079
    Pack size 25 mg
    Substance name ticarcillin impurity B
    CAS Number 6964-21-2
    Quantitative No
    Current batch 3422
    QTY (Max 25)
  • Search result 6

    Category Number 1080
    Pack size 25 mg
    Substance name ticarcillin impurity C
    CAS Number 21080-92-2
    Quantitative No
    Current batch 3423
    QTY (Max 2)
  • Search result 7

    Category Number 1087
    Pack size 250 mg
    Substance name ticarcillin monosodium
    CAS Number 4697-14-7
    Quantitative Yes
    Current batch 4137
    QTY (Max 1)
  • Search result 8

    Category Number 1331
    Pack size 10mg
    Substance name Timolol Impurity Standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4950
    QTY (Max 25)
  • Search result 9

    Category Number 1046
    Pack size 500 mg
    Substance name timolol maleate
    CAS Number 26921-17-5
    Quantitative Yes
    Current batch 4486
    QTY (Max 10)
  • Search result 10

    Category Number 645
    Pack size 100 mg
    Substance name tioconazole
    CAS Number 65899-73-2
    Quantitative No
    Current batch 2309
    QTY (Max 25)
  • Search result 11

    Category Number 687
    Pack size 100 mg
    Substance name tioconazole impurity standard
    CAS Number 65899-73-2
    Quantitative No
    Current batch 4797
    QTY (Max 25)
  • Search result 12

    Category Number 878
    Pack size 100 mg
    Substance name tioguanine
    CAS Number 154-42-7
    Quantitative Yes
    Current batch 4388
    QTY (Max 25)
  • Search result 13

    Category Number 333
    Pack size 350 mg
    Substance name tobramycin
    CAS Number 32986-56-4
    Quantitative Yes
    Current batch 4251
    QTY (Max 25)
  • Search result 14

    Category Number 1218
    Pack size 100 mg
    Substance name tolterodine tartrate
    CAS Number 124937-52-6
    Quantitative Yes
    Current batch 4044
    QTY (Max 25)
  • Search result 15

    Category Number 1322
    Pack size 100mg
    Substance name Topiramate
    CAS Number 97240-79-4
    Quantitative Yes
    Current batch 4894
    QTY (Max 25)
  • Search result 16

    Category Number 1323
    Pack size 25mg
    Substance name Topiramate impurity A
    CAS Number 97240-79-4
    Quantitative Yes
    Current batch 4896
    QTY (Max 25)
  • Search result 17

    Category Number 744
    Pack size 100 mg
    Substance name tramadol hydrochloride
    CAS Number 36282-47-0
    Quantitative Yes
    Current batch 4717
    QTY (Max 25)
  • Search result 18

    Category Number 893
    Pack size 15 mg
    Substance name tramadol impurity A
    CAS Number 2914-77-4
    Quantitative No
    Current batch 3209
    QTY (Max 2)
  • Search result 19

    Category Number 1089
    Pack size 200 mg
    Substance name trandolapril
    CAS Number 87679-37-6
    Quantitative Yes
    Current batch 3432
    QTY (Max 25)
  • Search result 20

    Category Number 1085
    Pack size 10 mg
    Substance name trandolapril impurity E
    CAS Number 87679-71-8
    Quantitative No
    Current batch 3388
    QTY (Max 25)
  • Search result 21

    Category Number 1263
    Pack size 100 mg
    Substance name tranexamic acid
    CAS Number 1197-18-8
    Quantitative Yes
    Current batch 4411
    QTY (Max 25)
  • Search result 22

    Category Number 734
    Pack size 25 mg
    Substance name tranexamic acid impurity standard
    CAS Number 1197-18-8
    Quantitative No
    Current batch 4790
    QTY (Max 25)
  • Search result 23

    Category Number 565
    Pack size 50 mg
    Substance name trans-clopenthixol acetate dihydrochloride
    CAS Number Not applicable
    Quantitative No
    Current batch 2018
    QTY (Max 25)
  • Search result 24

    Category Number 566
    Pack size 25 mg
    CAS Number 55501-05-8
    Quantitative No
    Current batch 2021
    QTY (Max 25)
  • Search result 25

    Category Number 561
    Pack size 25 mg
    Substance name trans-clopenthixol hydrochloride
    CAS Number 58045-22-0
    Quantitative No
    Current batch 4304
    QTY (Max 25)