Singapore · Impurity Reference Standards

Impurity Reference Standards for Singapore

The impurity reference standards division counts 20,060 products, and each one can be quoted for delivery to Singapore. Demand there comes mainly from petrochemicals & refining, specialty chemicals and pharmaceutical & biologics manufacturing. Typical delivery points include Jurong Island, Tuas Biomedical Park and Biopolis (one-north). Typical customers for this division are pharma QC and analytical development labs, regulatory affairs teams and contract research organisations.

Singapore Sample products

20,060products in this division

8–12 dsea transit from India

2–4 dair freight

6categories

Supplying impurity reference standards to Singapore

Sea freight reaches Singapore (PSA Pasir Panjang / Tuas) and Jurong Port in about 8–12 days port to port. Urgent or small lots fly to Singapore Changi (SIN) in 2–4 days. Import compliance for this category sits with HSA (Health Sciences Authority), and we prepare the COA, SDS and commercial documents your broker needs. Common grades for this division are Impurity reference standard with characterisation data, Secondary / working standard, Stable-isotope labelled standard and Nitrosamine (NDSRI) standard.

Grades in this division

Impurity reference standard with characterisation dataSecondary / working standardStable-isotope labelled standardNitrosamine (NDSRI) standardMetabolite standardCustom synthesised impurity

Pharma compliance in Singapore

Authority	HSA (Health Sciences Authority)
Seaports	Singapore (PSA Pasir Panjang / Tuas), Jurong Port
Airports	Singapore Changi (SIN)
Dangerous goods	IMDG by sea, IATA DGR by air

Many industrial chemicals listed as hazardous substances under the Environmental Protection and Management Act need an NEA licence or permit before import, and each consignment is declared through TradeNet. Therapeutic products and APIs fall under HSA controls, and poisons or controlled precursors may need separate HSA licences. The Ministry of Manpower's workplace safety rules apply on site. Dangerous goods must be packed and declared to IMDG or IATA rules. A valid certificate of origin is needed to claim CECA or AITIGA preferences.

From order to delivery

1–2 daysQuote and document set agreed
Price, pack sizes, Incoterm and the paperwork list are confirmed in writing.
3–7 daysPacking for export
Stock items are packed in UN-rated drums or cartons. Made-to-order material adds its own lead time.
1–3 daysExport clearance at Nhava Sheva or Mundra
Shipping bill filed, dangerous goods declared under IMDG where needed.
8–12 daysOcean transit to Singapore (PSA Pasir Panjang / Tuas)
Port-to-port time depends on the vessel schedule and any transhipment.
2–5 daysImport clearance
Your broker clears the goods against local rules. Chemical oversight: NEA (Hazardous Substances licence, EPMA) / MOM (WSH).

Indicative total by sea: 15–29 days

By air: about 6–14 days in total.

Documents for Singapore

Commercial Invoice
Packing List
Bill of Lading / Air Waybill
Certificate of Origin
Certificate of Analysis (COA)
Safety Data Sheet (16-section GHS)
NEA Hazardous Substances licence / import permit where applicable
HSA import licence or permit for poisons, therapeutic products or controlled precursors where applicable
Dangerous Goods Declaration (IMDG/IATA) where applicable

Categories in impurity reference standards

API Impurities 9,055Pharmacopeial Impurities (EP / USP / BP) 3,890Nitrosamine Impurities 382Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 976Metabolites & Degradation Products 2,569API Reference Standards 3,188

A selection we ship to Singapore

A rotating sample from the division. Every product in the catalogue can be quoted for this destination.

Full impurity reference standards range

N-Methyl-2-(4-methylpiperazin-1-yl)-N-(4-nitrophenyl)acetamide

CAS: 1139453-98-7
Formula: C₁₄H₂₀N₄O₃
MW: 292.33 g/mol

ZX-025846

Nintedanib Desmethyl

CAS: 2243384-71-4
Formula: C₁₃H₂₀N₄O
MW: 248.32 g/mol

ZX-025847

ent-Niraparib

CAS: 1038915-58-0
Formula: C₁₉H₂₀N₄O
MW: 320.4 g/mol

ZX-025848

(R)-tert-Butyl 3-(4-Aminophenyl)piperidine-1-carboxylate

CAS: 1263284-59-8
Formula: C₁₆H₂₄N₂O₂
MW: 276.37 g/mol

ZX-025849

Methyl 3-(2-(dimethylamino)vinyl)-2-nitrobenzoate

CAS: 93247-79-1
Formula: C₁₂H₁₄N₂O₄
MW: 250.25 g/mol

ZX-025850

Niraparib Carboxylic Acid

CAS: 1476777-06-6
Formula: C₁₉H₁₉N₃O₂
MW: 321.4 g/mol

ZX-025851

(1R,2S,5S)-N-((R)-1-Cyano-2-((S)-2-oxopyrrolidin-3-yl)ethyl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

CAS: 2755812-41-8
Formula: C₂₃H₃₂F₃N₅O₄
MW: 499.5 g/mol

ZX-025852

(1R,2S,5S)-N-((S)-1-Amino-1-oxo-3-((S)-2-oxopyrrolidin-3-yl)propan-2-yl)-3-((S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide

CAS: 2755812-81-6
Formula: C₂₃H₃₄F₃N₅O₅
MW: 517.5 g/mol

ZX-025853

(S)-2-Amino-3-((S)-2-oxopyrrolidin-3-yl)propanamide Hydrochloride

CAS: 2628280-48-6
Formula: C₇H₁₄ClN₃O₂
MW: 207.66 g/mol

ZX-025854

Tizoxanide

CAS: 173903-47-4
Formula: C₁₀H₇N₃O₄S
MW: 265.25 g/mol

ZX-025855

Nitrendipine Propyl Ester

CAS: 225785-54-6
Formula: C₁₉H₂₂N₂O₆
MW: 374.4 g/mol

ZX-025856

Nitrofurazone

CAS: 59-87-0
Formula: C₆H₆N₄O₄
MW: 198.14 g/mol

ZX-025857

Questions

Impurity Reference Standards for Singapore

Can Zemixal deliver impurity reference standards to Singapore?

Yes. We ship by sea to Singapore (PSA Pasir Panjang / Tuas) and Jurong Port, by air cargo or by express courier depending on quantity and urgency. Every lot carries a COA and a 16-section GHS SDS.

Which documents come with a impurity standards shipment to Singapore?

Commercial invoice, packing list, certificate of analysis and SDS as standard, plus the bill of lading or air waybill and a certificate of origin. Anything specific to HSA (Health Sciences Authority) is agreed with you at quote stage.

How long does delivery to Singapore take?

Allow 8–12 days for ocean transit or 2–4 days by air, plus packing, export clearance and import clearance. The timeline on this page shows each stage.

How is the purity of an impurity standard determined?

Purity is usually assigned by HPLC area percentage, supported by structural confirmation from NMR and mass spectrometry. Where needed, water content, residual solvents or a mass balance approach are added. The methods used and the results for your lot are listed on the certificate of analysis that comes with the vial.

Can I use your impurity standards in place of official pharmacopoeial references?

Our standards are secondary or research materials, not official pharmacopoeial references. Many laboratories use them for method development, peak identification and routine testing, and keep official references for disputes or regulatory submissions where these are mandated. Your quality system and regulator decide which reference is acceptable for each test.

Other divisions for Singapore

Lab Reagents Solvents (HPLC & GC) Biochemicals APIs Pharmaceutical Intermediates Inorganics & Metals Specialty Chemicals

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