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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.

Cycloheximide  25 g
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Manufacturer: TOKU-E Item Number: C001-25G
Cycloheximide 25 g CAS number 66-81-9 and purity ≥ 900 units/mg...
Price excludes taxes and shipping charges. Save -10%
£301.05 £334.50
Cycloheximide  5 g
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Manufacturer: TOKU-E Item Number: C001-5G
Cycloheximide 5 g CAS number 66-81-9 and purity ≥ 900 units/mg...
Price excludes taxes and shipping charges. Save -10%
£81.41 £90.45
Cycloheximide A EvoPure® 1 g
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Manufacturer: TOKU-E Item Number: C123-1G
Cycloheximide A EvoPure® 1 g CAS number 66-81-9 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£126.20 £140.22
Cycloheximide A EvoPure® 500 mg
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Manufacturer: TOKU-E Item Number: C123-500MG
Cycloheximide A EvoPure® 500 mg CAS number 66-81-9 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£97.30 £108.11
Cycloheximide CulturePure® 1 g
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Manufacturer: TOKU-E Item Number: C071-1G
Cycloheximide CulturePure® 1 g CAS number 66-81-9 and purity ≥ 900 units/mg...
Price excludes taxes and shipping charges. Save -10%
£59.72 £66.36
Cycloheximide CulturePure® 5 x 1g
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Manufacturer: TOKU-E Item Number: C071-5x1G
Cycloheximide CulturePure® 5 x 1g CAS number 66-81-9 and purity ≥ 900 units/mg...
Price excludes taxes and shipping charges. Save -10%
£161.85 £179.83
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Cycloheximide Solution (10% in DMSO Sterile) 1 mL
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Manufacturer: TOKU-E Item Number: C084-1ML
Cycloheximide Solution (10% in DMSO Sterile) 1 mL CAS number 66-81-9 and purity 100-105 mg/ml...
Price excludes taxes and shipping charges. Save -10%
£41.43 £46.03
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Cycloheximide Solution (10% in DMSO Sterile) 10x1 mL
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Manufacturer: TOKU-E Item Number: C084-10x1ML
Cycloheximide Solution (10% in DMSO Sterile) 10x1 mL CAS number 66-81-9 and purity 100-105 mg/ml...
Price excludes taxes and shipping charges. Save -10%
£226.87 £252.08
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Cyclopenin 1 mg
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Manufacturer: TOKU-E Item Number: C191-1MG
Cyclopenin 1 mg CAS number 19553-26-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£207.60 £230.67
Cyclopenin 5 mg
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Manufacturer: TOKU-E Item Number: C191-5MG
Cyclopenin 5 mg CAS number 19553-26-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£734.56 £816.18
Cyclopeptine 1 mg
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Manufacturer: TOKU-E Item Number: C224-1MG
Cyclopeptine 1 mg CAS number 50886-63-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£181.59 £201.77
Cyclopeptine 5 mg
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Manufacturer: TOKU-E Item Number: C224-5MG
Cyclopeptine 5 mg CAS number 50886-63-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£632.45 £702.72
Cyclopiazonic acid 1 mg
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Manufacturer: TOKU-E Item Number: C192-1MG
Cyclopiazonic acid 1 mg CAS number 18172-33-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£78.52 £87.24
Cyclopiazonic acid 5 mg
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Manufacturer: TOKU-E Item Number: C192-5MG
Cyclopiazonic acid 5 mg CAS number 18172-33-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£272.15 £302.39
Cyclosporin A EvoPure® 100 mg
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Manufacturer: TOKU-E Item Number: C042-100MG
Cyclosporin A EvoPure® 100 mg CAS number 59865-13-3 and purity ≥99.0% (HPLC as is)...
Price excludes taxes and shipping charges. Save -10%
£70.80 £78.67
Cyclosporin A EvoPure® 500 mg
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Manufacturer: TOKU-E Item Number: C042-500MG
Cyclosporin A EvoPure® 500 mg CAS number 59865-13-3 and purity ≥99.0% (HPLC as is)...
Price excludes taxes and shipping charges. Save -10%
£261.55 £290.61
Cyclosporin A ReadyMade Solution 10 x 1 mL
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Manufacturer: TOKU-E Item Number: C285-10x1ML
Cyclosporin A ReadyMade Solution 10 x 1 mL CAS number 59865-13-3 and purity ≥>= 95.00 % (HPLC) ...
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£161.85 £179.83
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Cyclosporin B EvoPure® 5 mg
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Manufacturer: TOKU-E Item Number: C043-5MG
Cyclosporin B EvoPure® 5 mg CAS number 63775-95-1 and purity ≥95.0% (as is)...
Price excludes taxes and shipping charges. Save -10%
£228.80 £254.22
Cyclosporin C EvoPure® 5 mg
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Manufacturer: TOKU-E Item Number: C044-5MG
Cyclosporin C EvoPure® 5 mg CAS number 59787-61-0 and purity ≥95.0% (as is)...
Price excludes taxes and shipping charges. Save -10%
£253.85 £282.05
Cyclosporin D EvoPure® 5 mg
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Manufacturer: TOKU-E Item Number: C045-5MG
Cyclosporin D EvoPure® 5 mg CAS number 63775-96-2 and purity ≥95.0% (as is)...
Price excludes taxes and shipping charges. Save -10%
£329.95 £366.61
Cyclosporin H EvoPure® 5 mg
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Manufacturer: TOKU-E Item Number: C046-5MG
Cyclosporin H EvoPure® 5 mg CAS number 83602-39-5 and purity ≥ 95.0%...
Price excludes taxes and shipping charges. Save -10%
£381.01 £423.34
Cyclosporin USP 1 g
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Manufacturer: TOKU-E Item Number: C092-1G
Cyclosporin USP 1 g CAS number 59865-13-3 and purity (On Dried Basis): 98.5-101.5% ...
Price excludes taxes and shipping charges. Save -10%
£296.71 £329.68
Cyclosporin USP 500 mg
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Manufacturer: TOKU-E Item Number: C092-500MG
Cyclosporin USP 500 mg CAS number 59865-13-3 and purity (On Dried Basis): 98.5-101.5% ...
Price excludes taxes and shipping charges. Save -10%
£208.57 £231.74
Cyromazine 100 mg
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Manufacturer: TOKU-E Item Number: C241-100MG
Cyromazine 100 mg CAS number 66215-27-8 and purity >= 98.0% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£59.72 £66.36
Cysteamine hydrochloride 25 g
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Manufacturer: TOKU-E Item Number: C212-25G
Cysteamine hydrochloride 25 g CAS number 156-57-0 and purity ≥ 98.0%...
Price excludes taxes and shipping charges. Save -10%
£45.76 £50.84
Cysteamine hydrochloride 4 x 25 g
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Manufacturer: TOKU-E Item Number: C212-4x25G
Cysteamine hydrochloride 4 x 25 g CAS number 156-57-0 and purity ≥ 98.0%...
Price excludes taxes and shipping charges. Save -10%
£129.09 £143.43
Cytochalasin A 1 mg
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Manufacturer: TOKU-E Item Number: C193-1MG
Cytochalasin A 1 mg CAS number 14110-64-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£93.45 £103.83
Cytochalasin A 5 mg
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Manufacturer: TOKU-E Item Number: C193-5MG
Cytochalasin A 5 mg CAS number 14110-64-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£324.65 £360.72
Cytochalasin B 1 mg
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Manufacturer: TOKU-E Item Number: C194-1MG
Cytochalasin B 1 mg CAS number 14930-96-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£93.45 £103.83
Cytochalasin B 5 mg
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Manufacturer: TOKU-E Item Number: C194-5MG
Cytochalasin B 5 mg CAS number 14930-96-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£324.65 £360.72
Cytochalasin C 1 mg
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Manufacturer: TOKU-E Item Number: C195-1MG
Cytochalasin C 1 mg CAS number 22144-76-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£93.45 £103.83
Cytochalasin C 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: C195-5MG
Cytochalasin C 5 mg CAS number 22144-76-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£324.65 £360.72
Cytochalasin D 1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: C196-1MG
Cytochalasin D 1 mg CAS number 22144-77-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£122.35 £135.94
Cytochalasin D 5 mg
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Manufacturer: TOKU-E Item Number: C196-5MG
Cytochalasin D 5 mg CAS number 22144-77-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£425.81 £473.12
Cytochalasin E 1 mg
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Manufacturer: TOKU-E Item Number: C197-1MG
Cytochalasin E 1 mg CAS number 36011-19-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£96.34 £107.04
Cytochalasin E 5 mg
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Manufacturer: TOKU-E Item Number: C197-5MG
Cytochalasin E 5 mg CAS number 36011-19-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£333.80 £370.89
Cytochalasin H 1 mg
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Manufacturer: TOKU-E Item Number: C198-1MG
Cytochalasin H 1 mg CAS number 53760-19-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£122.35 £135.94
Cytochalasin H 5 mg
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Manufacturer: TOKU-E Item Number: C198-5MG
Cytochalasin H 5 mg CAS number 53760-19-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£425.81 £473.12
Cytochalasin J 1 mg
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Manufacturer: TOKU-E Item Number: C199-1MG
Cytochalasin J 1 mg CAS number 56144-22-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£124.27 £138.08
Cytochalasin J 5 mg
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Manufacturer: TOKU-E Item Number: C199-5MG
Cytochalasin J 5 mg CAS number 56144-22-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£432.06 £480.07
D-2-Aminoglutarimide 1 mg
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Manufacturer: TOKU-E Item Number: A223-1MG
D-2-Aminoglutarimide 1 mg CAS number 673485-72-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£47.21 £52.45
D-2-Aminoglutarimide 5 mg
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Manufacturer: TOKU-E Item Number: A223-5MG
D-2-Aminoglutarimide 5 mg CAS number 673485-72-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£161.36 £179.29
D-Biotin 1 g
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Manufacturer: TOKU-E Item Number: B010-1G
D-Biotin 1 g CAS number 58-85-5 and purity 97.5-100.5%...
Price excludes taxes and shipping charges. Save -10%
£53.95 £59.94
D-Biotin 25 g
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Manufacturer: TOKU-E Item Number: B010-25G
D-Biotin 25 g CAS number 58-85-5 and purity 97.5-100.5%...
Price excludes taxes and shipping charges. Save -10%
£659.90 £733.22
D-Biotin 5 g
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Manufacturer: TOKU-E Item Number: B010-5G
D-Biotin 5 g CAS number 58-85-5 and purity 97.5-100.5%...
Price excludes taxes and shipping charges. Save -10%
£185.93 £206.59
D-Cycloserine 1 g
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Manufacturer: TOKU-E Item Number: C041-1G
D-Cycloserine 1 g CAS number 68-41-7 and purity (As Is): 900μg/mg...
Price excludes taxes and shipping charges. Save -10%
£66.95 £74.39
D-Cycloserine 5 g
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Manufacturer: TOKU-E Item Number: C041-5G
D-Cycloserine 5 g CAS number 68-41-7 and purity (As Is): 900μg/mg...
Price excludes taxes and shipping charges. Save -10%
£245.18 £272.42
D-Penicillamine 1 g
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Manufacturer: TOKU-E Item Number: P107-1G
D-Penicillamine 1 g CAS number 52-67-5 and purity ≥95%...
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£32.75 £36.39
D-Penicillamine 5 g
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Manufacturer: TOKU-E Item Number: P107-5G
D-Penicillamine 5 g CAS number 52-67-5 and purity ≥95%...
Price excludes taxes and shipping charges. Save -10%
£110.30 £122.56
Dabrafenib 10 mg
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Manufacturer: TOKU-E Item Number: D072-10MG
Dabrafenib 10 mg CAS number 1195765-45-7 and purity ≥ 99.0%...
Price excludes taxes and shipping charges. Save -10%
£135.35 £150.39
Dabrafenib 25 mg
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Manufacturer: TOKU-E Item Number: D072-25MG
Dabrafenib 25 mg CAS number 1195765-45-7 and purity ≥ 99.0%...
Price excludes taxes and shipping charges. Save -10%
£250.47 £278.30
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