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.

951 items
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  • Search result 1

    Category Number 1155
    Pack size 25 mg
    Substance name trospium chloride impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 3752
    QTY (Max 25)
  • Search result 2

    Category Number 349
    Pack size 50 mg
    Substance name tylosin
    CAS Number 1401-69-0
    Quantitative No
    Current batch 1226
    QTY (Max 2)
  • Search result 3

    Category Number 350
    Pack size 1 g
    Substance name urea
    CAS Number 57-13-6
    Quantitative Yes
    Current batch 4123
    QTY (Max 25)
  • Search result 4

    Category Number 706
    Pack size 150 mg
    Substance name ursodeoxycholic acid
    CAS Number 128-13-2
    Quantitative Yes
    Current batch 4497
    QTY (Max 25)
  • Search result 5

    Category Number 1142
    Pack size 50 mg
    Substance name ursodeoxycholic acid impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4878
    QTY (Max 25)
  • Search result 6

    Category Number 1194
    Pack size 100 mg
    Substance name valaciclovir hydrochloride
    CAS Number 124832-27-5
    Quantitative Yes
    Current batch 3893
    QTY (Max 25)
  • Search result 7

    Category Number 1195
    Pack size 10 mg
    Substance name valaciclovir impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4733
    QTY (Max 25)
  • Search result 8

    Category Number 1161
    Pack size 100 mg
    Substance name valsartan
    CAS Number 137862-53-4
    Quantitative Yes
    Current batch 3794
    QTY (Max 25)
  • Search result 9

    Category Number 1167
    Pack size 100 mg
    Substance name vecuronium bromide
    CAS Number 50700-72-6
    Quantitative Yes
    Current batch 4808
    QTY (Max 25)
  • Search result 10

    Category Number 835
    Pack size 100 mg
    Substance name venlafaxine hydrochloride
    CAS Number 99300-78-4
    Quantitative Yes
    Current batch 3841
    QTY (Max 1)
  • Search result 11

    Category Number 836
    Pack size 25 mg
    Substance name venlafaxine impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4177
    QTY (Max 25)
  • Search result 12

    Category Number 720
    Pack size 100 mg
    Substance name verapamil hydrochloride
    CAS Number 152-11-4
    Quantitative Yes
    Current batch 3910
    QTY (Max 25)
  • Search result 13

    Category Number 563
    Pack size 150 mg
    Substance name vigabatrin
    CAS Number 68506-86-5
    Quantitative Yes
    Current batch 3057
    QTY (Max 25)
  • Search result 14

    Category Number 672
    Pack size 100 mg
    Substance name warfarin
    CAS Number 81-81-2
    Quantitative Yes
    Current batch 4340
    QTY (Max 25)
  • Search result 15

    Category Number 353
    Pack size 100 mg
    Substance name xylometazoline hydrochloride
    CAS Number 1218-35-5
    Quantitative Yes
    Current batch 3451
    QTY (Max 25)
  • Search result 16

    Category Number 346
    Pack size 50 mg
    Substance name z-triprolidine hydrochloride
    CAS Number 51657-91-1
    Quantitative No
    Current batch 4592
    QTY (Max 25)
  • Search result 17

    Category Number 803
    Pack size 150 mg
    Substance name zidovudine
    CAS Number 30516-87-1
    Quantitative Yes
    Current batch 2870
    QTY (Max 2)
  • Search result 18

    Category Number 850
    Pack size 50 mg
    Substance name zidovudine and lamivudine impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 4387
    QTY (Max 25)
  • Search result 19

    Category Number 895
    Pack size 25 mg
    Substance name zidovudine impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 3214
    QTY (Max 25)
  • Search result 20

    Category Number 1065
    Pack size 25 mg
    Substance name zolpidem impurity A
    CAS Number 1346600-85-8
    Quantitative No
    Current batch 4740
    QTY (Max 25)
  • Search result 21

    Category Number 1063
    Pack size 100 mg
    Substance name zolpidem tartrate
    CAS Number 99294-93-6
    Quantitative Yes
    Current batch 4755
    QTY (Max 5)
  • Search result 22

    Category Number 812
    Pack size 100 mg
    Substance name zopiclone
    CAS Number 43200-80-2
    Quantitative Yes
    Current batch 4382
    QTY (Max 10)
  • Search result 23

    Category Number 599
    Pack size 100 mg
    Substance name zuclopenthixol acetate dihydrochloride
    CAS Number 85721-05-7
    Quantitative Yes
    Current batch 3066
    QTY (Max 25)
  • Search result 24

    Category Number 596
    Pack size 100 mg
    Substance name zuclopenthixol decanoate dihydrochloride
    CAS Number 64053-00-5
    Quantitative Yes
    Current batch 3065
    QTY (Max 25)
  • Search result 25

    Category Number 558
    Pack size 100 mg
    Substance name zuclopenthixol hydrochloride
    CAS Number 633-59-0
    Quantitative Yes
    Current batch 3064
    QTY (Max 25)