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.

30/06/2025

Dear valued customer,

We are writing to let you know that, due to an electrical fault, our freezers in which some BPCRS vial stock was stored switched off for a short period and the storage temperature may have been compromised over the weekend of 21st/22nd June. This was detected promptly and rectified, but as a precaution we have removed all affected items from sale and are conducting thorough testing to verify their stability and usability.

Consequently, you may notice in the short term that a higher number of products than usual are showing as “out of stock”. This process is necessary to ensure that only products that meet our quality standards are shipped to you.

We sincerely apologise for any inconvenience and appreciate your patience and understanding, and would like to reassure you that;

· None of the affected vials have been shipped to customers.

· All affected vials have been quarantined.

· We are urgently reviewing the material stability data and carrying out testing to determine if the material has been affected.

· We have additional bulk supplies of the materials which have not been affected and we can produce more vials from these bulks.

Products will be brought back into stock as soon as we can confirm they have not been affected. As we assess the products and gather more data we will be able to update with estimated timeframes in due course. As soon as we have further information we will update this page.

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  • Search result 1

    Category Number 319
    Pack size 100 mg
    Substance name testosterone decanoate
    Declared content Not applicable
    Current batch 3159
    QTY (Max 25)
  • Search result 2

    Category Number 728
    Pack size 100 mg
    Substance name testosterone enantate
    Declared content
    96.7 % of C26H40O3
    Current batch 4412
    Discontinued
  • Search result 3

    Category Number 321
    Pack size 100 mg
    Substance name testosterone isocaproate
    Declared content Not applicable
    Current batch 3162
    QTY (Max 25)
  • Search result 4

    Category Number 322
    Pack size 100 mg
    Substance name testosterone phenylpropionate
    Declared content
    99.9% of C28H36O3
    Current batch 3160
    Discontinued
  • Search result 5

    Category Number 702
    Pack size 100 mg
    Substance name testosterone propionate
    Declared content
    99.9% of C22H32O3
    Current batch 3161
    QTY (Max 5)
  • Search result 6

    Category Number 480
    Pack size 100 mg
    Substance name tetracycline hydrochloride
    Declared content
    97.5 % of C22H24N2O8, HCl
    Current batch 4564
    Out of Stock
  • Search result 7

    Category Number 327
    Pack size 100 mg
    Substance name theophylline
    Declared content
    99.9% of C7H8N4O2
    Current batch 2726
    QTY (Max 25)
  • Search result 8

    Category Number 414
    Pack size 100 mg
    Substance name thiamine mononitrate
    Declared content
    99.5% of C12H17N5O4S
    Current batch 3998
    QTY (Max 5)
  • Search result 9

    Category Number 495
    Pack size 100 mg
    Substance name thioridazine
    Declared content
    99.8% of C21H26N2S2
    Current batch 1766
    Discontinued
  • Search result 10

    Category Number 331
    Pack size 100 mg
    Substance name thiotepa
    Declared content
    98.7 % of C6H12N3PS
    Current batch 4815
    QTY (Max 25)
  • Search result 11

    Category Number 848
    Pack size 100 mg
    Substance name tibolone
    Declared content
    99.5 % of C21H28O2
    Current batch 4413
    QTY (Max 25)
  • Search result 12

    Category Number 849
    Pack size 10 mg
    Substance name tibolone impurity standard
    Declared content Not applicable
    Current batch 4210
    Out of Stock
  • Search result 13

    Category Number 1086
    Pack size 50 mg
    Substance name ticarcillin impurity A
    Declared content Not applicable
    Current batch 3424
    QTY (Max 25)
  • Search result 14

    Category Number 1079
    Pack size 25 mg
    Substance name ticarcillin impurity B
    Declared content Not applicable
    Current batch 3422
    QTY (Max 25)
  • Search result 15

    Category Number 1080
    Pack size 25 mg
    Substance name ticarcillin impurity C
    Declared content Not applicable
    Current batch 3423
    QTY (Max 25)
  • Search result 16

    Category Number 1087
    Pack size 250 mg
    Substance name ticarcillin monosodium
    Declared content
    91.9 % of C15H15N2NaO6S2
    Current batch 4137
    Out of Stock
  • Search result 17

    Category Number 1046
    Pack size 500 mg
    Substance name timolol maleate
    Declared content
    100.0% of C13H24N4O3S, C4H4O4
    Current batch 4486
    QTY (Max 25)
  • Search result 18

    Category Number 645
    Pack size 100 mg
    Substance name tioconazole
    Declared content Not applicable
    Current batch 2309
    QTY (Max 1)
  • Search result 19

    Category Number 687
    Pack size 100 mg
    Substance name tioconazole impurity standard
    Declared content Not applicable
    Current batch 3669
    QTY (Max 1)
  • Search result 20

    Category Number 878
    Pack size 100 mg
    Substance name tioguanine
    Declared content
    98.8 % of C5H5N5S
    Current batch 4388
    QTY (Max 25)
  • Search result 21

    Category Number 333
    Pack size 350 mg
    Substance name tobramycin
    Declared content
    See leaflet provided with the BPCRS
    Current batch 4251
    QTY (Max 25)
  • Search result 22

    Category Number 1218
    Pack size 100 mg
    Substance name tolterodine tartrate
    Declared content
    100.0% of C22H31NO, C4H6O6
    Current batch 4044
    QTY (Max 25)
  • Search result 23

    Category Number 744
    Pack size 100 mg
    Substance name tramadol hydrochloride
    Declared content
    99.8% of C16H25NO2,HCl
    Current batch 4717
    QTY (Max 5)
  • Search result 24

    Category Number 893
    Pack size 15 mg
    Substance name tramadol impurity A
    Declared content Not applicable
    Current batch 3209
    QTY (Max 10)
  • Search result 25

    Category Number 1089
    Pack size 200 mg
    Substance name trandolapril
    Declared content
    99.6% of C24H34N2O5
    Current batch 3432
    QTY (Max 25)