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Primary Reference Standard

When precision matters most, start with the highest benchmark—Primary Reference Standards from Lancetech Ltd are essential for achieving traceable and reproducible results in analytical testing. These ultra-pure substances serve as the definitive reference point for calibrating instruments, verifying methods, and producing secondary standards.


Ideal for pharmaceutical, environmental, and chemical laboratories, our primary standards ensure compliance with global regulatory requirements and support accurate quantification across a wide range of applications. Each standard is backed by detailed documentation and traceability to certified bodies, ensuring your data integrity from the first measurement onward.


Explore our range of primary reference materials and set a solid foundation for your lab’s analytical success.

3'-Ethoxy-56-dihydro-spinosyn J 1 mg
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Manufacturer: TOKU-E Item Number: S091-1MG
3'-Ethoxy-56-dihydro-spinosyn J 1 mg CAS number 187166-40-1 and purity >95% by HPLC...
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£268.30 £298.11
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3'-Ethoxy-56-dihydro-spinosyn J 17-pseudoaglycone 1 mg
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Manufacturer: TOKU-E Item Number: S090-1MG
3'-Ethoxy-56-dihydro-spinosyn J 17-pseudoaglycone 1 mg CAS number nan and purity >95.0%...
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£237.47 £263.85
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3'-Ethoxy-56-dihydro-spinosyn J 17-pseudoaglycone 5 mg
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Manufacturer: TOKU-E Item Number: S090-5MG
3'-Ethoxy-56-dihydro-spinosyn J 17-pseudoaglycone 5 mg CAS number nan and purity >95.0%...
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£826.56 £918.40
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3'-Ethoxy-56-dihydro-spinosyn J 5 mg
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Manufacturer: TOKU-E Item Number: S091-5MG
3'-Ethoxy-56-dihydro-spinosyn J 5 mg CAS number 187166-40-1 and purity >95% by HPLC...
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£936.86 £1,040.96
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3'-Ethoxy-spinosyn L 1 mg
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Manufacturer: TOKU-E Item Number: S093-1MG
3'-Ethoxy-spinosyn L 1 mg CAS number 187166-15-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£268.30 £298.11
3'-Ethoxy-spinosyn L 17-pseudoaglycone 0.5 mg
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Manufacturer: TOKU-E Item Number: S092-0.5MG
3'-Ethoxy-spinosyn L 17-pseudoaglycone 0.5 mg CAS number nan and purity >95% by HPLC...
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£268.30 £298.11
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3'-Ethoxy-spinosyn L 17-pseudoaglycone 2.5 mg
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Manufacturer: TOKU-E Item Number: S092-2.5MG
3'-Ethoxy-spinosyn L 17-pseudoaglycone 2.5 mg CAS number nan and purity >95% by HPLC...
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£936.86 £1,040.96
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3'-Ethoxy-spinosyn L 5 mg
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Manufacturer: TOKU-E Item Number: S093-5MG
3'-Ethoxy-spinosyn L 5 mg CAS number 187166-15-0 and purity >95% by HPLC...
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£936.86 £1,040.96
3-Acetyldeoxynivalenol 0.1 mg
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Manufacturer: TOKU-E Item Number: A194-0.1MG
3-Acetyldeoxynivalenol 0.1 mg CAS number 50722-38-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£179.67 £199.63
3-Acetyldeoxynivalenol 0.5 mg
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Manufacturer: TOKU-E Item Number: A194-0.5MG
3-Acetyldeoxynivalenol 0.5 mg CAS number 50722-38-8 and purity >95% by HPLC...
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£627.63 £697.37
3-Hydroxy-L-tyrosine methyl ester 25 mg
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Manufacturer: TOKU-E Item Number: H056-25MG
3-Hydroxy-L-tyrosine methyl ester 25 mg CAS number 1421-65-4 and purity >99% by HPLC...
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£158.96 £176.62
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3-Hydroxy-L-tyrosine methyl ester 5 mg
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Manufacturer: TOKU-E Item Number: H056-5MG
3-Hydroxy-L-tyrosine methyl ester 5 mg CAS number 1421-65-4 and purity >99% by HPLC...
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£45.76 £50.84
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4'-Acetylchrysomycin A 1 mg
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Manufacturer: TOKU-E Item Number: A195-1MG
4'-Acetylchrysomycin A 1 mg CAS number nan and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£210.49 £233.88
4'-Acetylchrysomycin A 5 mg
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Manufacturer: TOKU-E Item Number: A195-5MG
4'-Acetylchrysomycin A 5 mg CAS number nan and purity >95% by HPLC...
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£733.60 £815.11
4'-Acetylchrysomycin B 0.5 mg
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Manufacturer: TOKU-E Item Number: A196-0.5MG
4'-Acetylchrysomycin B 0.5 mg CAS number nan and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£179.67 £199.63
4'-Acetylchrysomycin B 2.5 mg
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Manufacturer: TOKU-E Item Number: A196-2.5MG
4'-Acetylchrysomycin B 2.5 mg CAS number nan and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£627.63 £697.37
4'-Acetylchrysomycin C 0.1 mg
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Manufacturer: TOKU-E Item Number: A197-0.1MG
4'-Acetylchrysomycin C 0.1 mg CAS number nan and purity >95% by HPLC...
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£149.81 £166.45
4'-Acetylchrysomycin C 0.5 mg
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Manufacturer: TOKU-E Item Number: A197-0.5MG
4'-Acetylchrysomycin C 0.5 mg CAS number nan and purity >95% by HPLC...
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£523.11 £581.23
4-Aminobenzoic Acid 100g
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Manufacturer: TOKU-E Item Number: A049-100G
4-Aminobenzoic Acid 100g CAS number 150-13-0 and purity ≥99%...
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£47.68 £52.98
4-Epi-anhydrotetracycline HCl EvoPure® 100 mg
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Manufacturer: TOKU-E Item Number: T056-100MG
4-Epi-anhydrotetracycline HCl EvoPure® 100 mg CAS number 4465-65-0 and purity >97% by HPLC...
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£200.86 £223.18
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4-Epi-oxytetracycline EvoPure® 100 mg
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Manufacturer: TOKU-E Item Number: O008-100MG
4-Epi-oxytetracycline EvoPure® 100 mg CAS number 14206-58-7 and purity >99% by HPLC...
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£284.19 £315.77
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4-epianhydrochlortetracycline hydrochloride 1 mg
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Manufacturer: TOKU-E Item Number: E042-1MG
4-epianhydrochlortetracycline hydrochloride 1 mg CAS number 158018-53-2 and purity >95% by HPLC...
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£111.27 £123.63
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4-epianhydrochlortetracycline hydrochloride 5 mg
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Manufacturer: TOKU-E Item Number: E042-5MG
4-epianhydrochlortetracycline hydrochloride 5 mg CAS number 158018-53-2 and purity >95% by HPLC...
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£389.20 £432.44
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4-Epichlortetracycline Hydrochloride 1 mg
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Manufacturer: TOKU-E Item Number: E061-1MG
4-Epichlortetracycline Hydrochloride 1 mg CAS number 101342-45-4 and purity >95% by HPLC...
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£111.27 £123.63
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4-Epichlortetracycline Hydrochloride 5 mg
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Manufacturer: TOKU-E Item Number: E061-5MG
4-Epichlortetracycline Hydrochloride 5 mg CAS number 101342-45-4 and purity >95% by HPLC...
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£389.20 £432.44
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4-epitetracycline ammonium salt, EvoPure® 100 mg
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Manufacturer: TOKU-E Item Number: E082-100MG
4-epitetracycline ammonium salt, EvoPure® 100 mg CAS number 79-85-6 and purity ≥95% (HPLC)...
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£187.86 £208.73
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4-epitetracycline ammonium salt, EvoPure® 500 mg
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Manufacturer: TOKU-E Item Number: E082-500MG
4-epitetracycline ammonium salt, EvoPure® 500 mg CAS number 79-85-7 and purity ≥95% (HPLC)...
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£617.52 £686.13
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4-Epitetracycline HCl EvoPure® 100 mg
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Manufacturer: TOKU-E Item Number: T053-100MG
4-Epitetracycline HCl EvoPure® 100 mg CAS number 23313-80-6 and purity >95% (HPLC, as is)...
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£233.61 £259.57
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4-hydroxyalternariol 1 mg
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Manufacturer: TOKU-E Item Number: H031-1MG
4-hydroxyalternariol 1 mg CAS number 959417-21-1 and purity >95% by HPLC...
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£203.75 £226.39
4-hydroxyalternariol 5 mg
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Manufacturer: TOKU-E Item Number: H031-5MG
4-hydroxyalternariol 5 mg CAS number 959417-21-1 and purity >95% by HPLC...
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£709.52 £788.35
5-Azacytidine 100 mg
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Manufacturer: TOKU-E Item Number: A095-100MG
5-Azacytidine 100 mg CAS number 320-67-2 and purity ≥95.0%...
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£52.98 £58.87
5-Azacytidine 500 mg
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Manufacturer: TOKU-E Item Number: A095-500MG
5-Azacytidine 500 mg CAS number 320-67-2 and purity ≥95.0%...
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£190.75 £211.94
5-Fluorocytosine 1 g
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Manufacturer: TOKU-E Item Number: F003-1G
5-Fluorocytosine 1 g CAS number 2022-85-7 and purity (On Dried Basis): 98.5-101.0% ...
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£160.88 £178.76
5-Fluorocytosine 5 g
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Manufacturer: TOKU-E Item Number: F003-5G
5-Fluorocytosine 5 g CAS number 2022-85-7 and purity (On Dried Basis): 98.5-101.0% ...
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£360.30 £400.33
5-Fluorouracil 1 g
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Manufacturer: TOKU-E Item Number: F034-1G
5-Fluorouracil 1 g CAS number 51-21-8 and purity 98.0% - 102.0%...
Price excludes taxes and shipping charges. Save -10%
£35.16 £39.07
5-Fluorouracil 5 g
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Manufacturer: TOKU-E Item Number: F034-5G
5-Fluorouracil 5 g CAS number 51-21-8 and purity 98.0% - 102.0%...
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£86.71 £96.34
5-Methoxycanthinone 1 mg
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Manufacturer: TOKU-E Item Number: M111-1MG
5-Methoxycanthinone 1 mg CAS number 15071-56-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£210.49 £233.88
5-Methoxycanthinone 5 mg
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Manufacturer: TOKU-E Item Number: M111-5MG
5-Methoxycanthinone 5 mg CAS number 15071-56-4 and purity >95% by HPLC...
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£733.60 £815.11
6,7-Dimethoxy-2,2-dimethyl-3-chromene 25 mg
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Manufacturer: TOKU-E Item Number: D105-25MG
6,7-Dimethoxy-2,2-dimethyl-3-chromene 25 mg CAS number 644-06-4 and purity >99% by HPLC...
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£173.89 £193.21
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6,7-Dimethoxy-2,2-dimethyl-3-chromene 5 mg
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Manufacturer: TOKU-E Item Number: D105-5MG
6,7-Dimethoxy-2,2-dimethyl-3-chromene 5 mg CAS number 644-06-4 and purity >99% by HPLC...
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£49.62 £55.13
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6-(γ,γ-Dimethylallylamino)purine riboside 100 mg
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Manufacturer: TOKU-E Item Number: D026-100MG
6-(γ,γ-Dimethylallylamino)purine riboside 100 mg CAS number 7724-76-7 and purity ≥ 98.0%...
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£352.59 £391.77
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6-Aminopenicillanic acid 10 g
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Manufacturer: TOKU-E Item Number: A089-10G
6-Aminopenicillanic acid 10 g CAS number 551-16-6 and purity ≥ 96.0%...
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£49.62 £55.13
6-Aminopenicillanic acid 25 g
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Manufacturer: TOKU-E Item Number: A089-25G
6-Aminopenicillanic acid 25 g CAS number 551-16-6 and purity ≥ 96.0%...
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£80.44 £89.38
6-Benzylaminopurine 1 g
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Manufacturer: TOKU-E Item Number: B026-1G
6-Benzylaminopurine 1 g CAS number 1214-39-7 and purity ≥ 99.0%...
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£32.75 £36.39
6-Benzylaminopurine 25 g
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Manufacturer: TOKU-E Item Number: B026-25G
6-Benzylaminopurine 25 g CAS number 1214-39-7 and purity ≥ 99.0%...
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£544.78 £605.31
6-Benzylaminopurine 5 g
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Manufacturer: TOKU-E Item Number: B026-5G
6-Benzylaminopurine 5 g CAS number 1214-39-7 and purity ≥ 99.0%...
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£129.09 £143.43
7-Aminocephalosporanic Acid 5 g
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Manufacturer: TOKU-E Item Number: A093-5G
7-Aminocephalosporanic Acid 5 g CAS number 957-68-6 and purity ≥95.5%...
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£180.63 £200.70
7-Dechlorogriseofulvin 0.1 mg
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Manufacturer: TOKU-E Item Number: D020-0.1MG
7-Dechlorogriseofulvin 0.1 mg CAS number 3680-32-8 and purity >98% by HPLC...
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£149.81 £166.45
7-Dechlorogriseofulvin 0.5 mg
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Manufacturer: TOKU-E Item Number: D020-0.5MG
7-Dechlorogriseofulvin 0.5 mg CAS number 3680-32-8 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£523.11 £581.23
7-Oxostaurosporine 1 mg
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Manufacturer: TOKU-E Item Number: O028-1MG
7-Oxostaurosporine 1 mg CAS number 141196-69-2 and purity >98% by HPLC...
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£272.63 £302.92
7-Oxostaurosporine 5 mg
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Manufacturer: TOKU-E Item Number: O028-5MG
7-Oxostaurosporine 5 mg CAS number 141196-69-2 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£949.87 £1,055.41
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