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 726
    Pack size 100 mg
    Substance name diltiazem hydrochloride
    CAS Number 33286-22-5
    Quantitative Yes
    Current batch 3220
    QTY (Max 25)

  • Search result 2

    Category Number 899
    Pack size 25 mg
    Substance name diltiazem impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 3358
    QTY (Max 25)

  • Search result 3

    Category Number 865
    Pack size 25 mg
    Substance name dimethyl-2,6-dimethyl-4-(2-nitrophenyl)pyridine-3,5-dicarboxylate
    CAS Number 67035-22-7
    Quantitative No
    Current batch 3071
    QTY (Max 25)

  • Search result 4

    Category Number 866
    Pack size 25 mg
    Substance name dimethyl-2,6-dimethyl-4-(2-nitrosophenyl)pyridine-3,5-dicarboxylate
    CAS Number 50428-14-3
    Quantitative No
    Current batch 3072
    QTY (Max 25)

  • Search result 5

    Category Number 511
    Pack size 25 mg
    Substance name dimethyl{5-[2-(1-methylamino-2-nitrovinylamino)ethylsulfinylmethyl]furfuryl}amine
    CAS Number 73851-70-4
    Quantitative No
    Current batch 4069
    QTY (Max 25)

  • Search result 6

    Category Number 690
    Pack size 100 mg
    Substance name dimpylate
    CAS Number 333-41-5
    Quantitative Yes
    Current batch 4731
    QTY (Max 5)

  • Search result 7

    Category Number 691
    Pack size 100 mg
    Substance name dimpylate for chromatography
    CAS Number 333-41-5
    Quantitative No
    Current batch 4375
    QTY (Max 2)

  • Search result 8

    Category Number 902
    Pack size 100 mg
    Substance name dinoprostone
    CAS Number 363-24-6
    Quantitative Yes
    Current batch 3328
    Discontinued

  • Search result 9

    Category Number 896
    Pack size 100 mg
    Substance name diphenhydramine hydrochloride
    CAS Number 147-24-0
    Quantitative Yes
    Current batch 3764
    QTY (Max 25)

  • Search result 10

    Category Number 1119
    Pack size 25 mg
    Substance name diphenylmethanol
    CAS Number 91-01-0
    Quantitative No
    Current batch 3574
    QTY (Max 25)

  • Search result 11

    Category Number 128
    Pack size 100 mg
    Substance name dipipanone hydrochloride
    CAS Number 75783-06-1
    Quantitative Yes
    Current batch 1402
    Discontinued

  • Search result 12

    Category Number 673
    Pack size 100 mg
    Substance name dipivefrine hydrochloride
    CAS Number 64019-93-8
    Quantitative Yes
    Current batch 2268
    QTY (Max 25)

  • Search result 13

    Category Number 659
    Pack size 100 mg
    Substance name dipivefrine impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 2315
    E-mail to order:  bpcrs@mhra.gov.uk

  • Search result 14

    Category Number 589
    Pack size 100 mg
    Substance name diprenorphine
    CAS Number 14357-78-9
    Quantitative Yes
    Current batch 3547
    Discontinued

  • Search result 15

    Category Number 131
    Pack size 100 mg
    Substance name dipyridamole
    CAS Number 58-32-2
    Quantitative Yes
    Current batch 3374
    QTY (Max 25)

  • Search result 16

    Category Number 1102
    Pack size 25 mg
    Substance name dipyridamole impurity standard
    CAS Number Not applicable
    Quantitative No
    Current batch 3697
    QTY (Max 25)

  • Search result 17

    Category Number 1224
    Pack size 100 mg
    Substance name disodium edetate
    CAS Number 6381-92-6
    Quantitative Yes
    Current batch 4067
    QTY (Max 25)

  • Search result 18

    Category Number 577
    Pack size 1
    Substance name disodium ethoxyphosphinatoformate
    CAS Number Not applicable
    Quantitative Not applicable
    Current batch
    Discontinued

  • Search result 19

    Category Number 615
    Pack size 100 mg
    Substance name disodium pamidronate
    CAS Number 57248-88-1
    Quantitative Yes
    Current batch 4323
    QTY (Max 1)

  • Search result 20

    Category Number 132
    Pack size 50 mg
    Substance name disulfiram
    CAS Number 97-77-8
    Quantitative Yes
    Current batch 3277
    QTY (Max 25)

  • Search result 21

    Category Number 385
    Pack size 100 mg
    Substance name dithranol
    CAS Number 1143-38-0
    Quantitative Yes
    Current batch 2932
    QTY (Max 25)

  • Search result 22

    Category Number 386
    Pack size 50 mg
    Substance name dithranol dimer
    CAS Number 31991-54-5
    Quantitative No
    Current batch 2986
    QTY (Max 25)

  • Search result 23

    Category Number 674
    Pack size 100 mg
    Substance name dobutamine hydrochloride
    CAS Number 49745-95-1
    Quantitative Yes
    Current batch 3728
    QTY (Max 25)

  • Search result 24

    Category Number 133
    Pack size 200 mg
    Substance name docusate sodium
    CAS Number 577-11-7
    Quantitative Yes
    Current batch 4585
    QTY (Max 25)

  • Search result 25

    Category Number 669
    Pack size 100 mg
    Substance name domperidone maleate
    CAS Number 83898-65-1
    Quantitative Yes
    Current batch 4273
    QTY (Max 25)