Frequently Asked Questions

Send the structure as a SMILES string, CAS number or drawing, the quantity, target purity, the characterisation data you need and your timeline. Any known route, literature reference or reason the compound is difficult to obtain helps. We respond with feasibility questions or an indicative route outline, timeline and cost, usually as a fixed price per deliverable.

Characterisation data can include ¹H NMR, ¹³C or 2D NMR, LC-MS or high-resolution mass spectrometry, HPLC purity, IR, water by Karl Fischer, TGA, specific rotation or chiral HPLC. We agree the data package before work starts, summarise it on a Certificate of Analysis, and supply the underlying spectra and chromatograms as PDFs.

Yes. We are happy to sign a mutual NDA before you share structures, routes or project details. Information is passed to our synthesis partner only as far as needed to perform the work, under equivalent confidentiality obligations. Unless agreed otherwise in writing, compounds made to your specification are supplied only to you.

Projects range from tens of milligrams, typical for impurity or metabolite standards, to multi-kilogram quantities of intermediates. For larger scales, the route is reviewed for safety, reagent availability and practical purification, and a smaller demonstration batch usually precedes full production. Feasibility and scale are confirmed project by project.

Chemical prices depend on grade, pack size, lot availability, hazard class, destination and Incoterm. Quoting each request lets us confirm stock and the actual lot specification before you commit, and give a delivered cost that reflects your shipment rather than a list price that may change. Quotations are free and carry no obligation.

Most quotations for catalogue items are sent within one to two working days. Requests that need sourcing from a manufacturer, bulk pricing, dangerous goods freight rates or custom synthesis feasibility take longer, and we will tell you when to expect a full answer. Including CAS numbers, grades and your destination country helps us respond faster.

For catalogue items there is generally no fixed minimum, but very small orders shipped internationally can be dominated by freight and dangerous goods charges, so we will show those costs clearly. Some bulk items and custom syntheses have a minimum batch size, which is stated on the quotation along with the reason for it.

Yes. Add a free-text line to your quote basket or email query@vaqorachemicals.com with the product name, CAS number, grade and quantity. We will check whether we can source it from a reviewed manufacturer, offer a suitable alternative grade, or discuss custom synthesis if it is not commercially available.

No. We supply businesses, research institutions, universities, laboratories and other professional users only. Many of our products are hazardous and are intended for use by trained personnel in appropriate facilities. We may ask for company details, end-use information or licences before confirming an order, particularly for regulated or controlled substances.

We accept telegraphic transfer (TT) to our bank account and, for larger orders, irrevocable letters of credit opened through a recognised bank. Our bank details are given only on the proforma invoice. If you ever receive a message claiming our bank details have changed, confirm it by writing to query@vaqorachemicals.com in a new email thread before paying.

New customers normally pay in advance or by letter of credit. For established customers with a regular order history, we may consider deferred payment terms subject to a credit assessment. Any agreed terms are stated on the proforma invoice, and the terms of sale apply where nothing else has been agreed in writing.

We commonly quote in US dollars, euros or Indian rupees, and can discuss other major currencies. The currency is fixed on the quotation and proforma invoice. Bank charges outside India, including intermediary bank fees, are normally for the buyer's account, so please instruct your bank to send the full invoice amount.

In-stock items are normally dispatched within 3 to 7 working days of cleared payment, or of receipt of a compliant letter of credit. Sourced, bulk and made-to-order items follow the lead time given on the quotation. You receive tracking details and copies of the shipping documents as soon as the goods leave us.

Yes. Domestic customers in India receive a GST-compliant tax invoice showing the HSN code, applicable GST rate and our GST registration details. Please give your GSTIN and billing address when you submit your request for quote so that input tax credit can be claimed correctly. Export invoices are issued under the applicable export provisions.

AR (Analytical Reagent) grade is made to tight purity limits with specified maximum levels of individual impurities, suitable for quantitative analysis. LR (Laboratory Reagent) grade is of good but lower purity, suitable for general lab work, synthesis and teaching where trace impurities do not affect the result. AR costs more and is not always necessary.

For HPLC with UV detection, use HPLC-grade solvent with low UV absorbance at your working wavelength, low residue and filtered particulates. For LC-MS, choose LC-MS grade, which additionally controls metal ions and background contaminants that suppress ionisation or add adduct peaks. Using a lower grade often causes noisy baselines and ghost peaks.

Yes, for many products. A pharmacopoeial grade means the material is tested to the relevant monograph. Where a product is offered to more than one pharmacopoeia, the COA states which monographs were applied. Suitability for use in a medicine also depends on regulatory documentation and supplier qualification, which remain the buyer's responsibility.

Products are supplied for industrial, laboratory and research use only, and are not for human or veterinary use unless specified with appropriate pharmacopoeial grade and regulatory documentation. Even then, the buyer is responsible for qualifying the supplier and obtaining any approvals required for use in a medicinal, food or cosmetic product.

Yes. We supply pharmaceutical impurities, metabolites, nitrosamines and stable-isotope-labelled compounds, typically as characterised materials with a COA and supporting spectra. These are generally suitable as working or secondary standards. For compendial testing that requires official primary standards, use the standards issued by the relevant pharmacopoeia or qualify ours against them.

Yes. Each lot is supplied with a Certificate of Analysis that shows the product identity, CAS number, lot number, specification limits, actual results and retest or expiry date. The COA refers to the specific lot you receive, not a generic specification. We can also send a sample COA before you order so you can check it against your requirements.

A Safety Data Sheet in the 16-section GHS format accompanies every shipment and is emailed with your dispatch documents. If you need an SDS formatted for a specific jurisdiction, such as an EU REACH-style SDS or a version in a particular language, please mention it at the quotation stage so we can confirm availability.

Often, yes. Depending on the product and manufacturer, we can provide NMR, IR, mass or HPLC data, the analytical method, residual solvent or elemental impurity statements, TSE/BSE declarations or access to a DMF or CEP. Documentation available on request varies by product, so we confirm what exists before you place an order.

We source from manufacturers whose documentation and analytical capability we have reviewed, check each lot's data against the agreed specification before offering it, inspect containers and labels on receipt, and record lot numbers for traceability. Where needed, we arrange independent testing and state which laboratory performed it and by which method.

Contact us within 30 days of delivery with the lot number and your analytical results. We compare your data with the COA, manufacturer records and any retained sample, and may request a portion of the material. If non-conformity is confirmed, we replace the product or refund the price paid. Our Returns Policy has full details.

We ship worldwide, subject to export-control and sanctions rules, the import regulations of the destination country and carrier restrictions on hazardous goods. Some products need import permits or licences at destination, which are the buyer's responsibility. We will tell you at the quotation stage if we see any restriction affecting your order.

We usually quote EXW, FOB, CFR, CIF or DAP under Incoterms 2020, and can discuss others such as FCA or CPT. For samples and small parcels by courier, DAP is common. For sea freight, FOB, CFR or CIF are typical. The chosen term determines who pays freight and insurance and where risk passes.

Yes, where regulations allow. Dangerous goods are classified with their UN number and packing group, packed in UN-specification packaging and declared under the IMDG Code for sea or IATA Dangerous Goods Regulations for air. Some substances cannot travel by courier or on passenger aircraft, which affects routing, cost and transit time.

As a guide, courier and air shipments take roughly 3 to 12 days depending on region, and sea freight 7 to 50 days port to port. Dangerous goods, customs inspections and regulatory holds can add time. Our Export and Logistics page gives indicative ranges by region, and each quotation states the expected dispatch date.

Unless your quotation states otherwise, import duties, local taxes, customs clearance charges and any import permits at destination are the buyer's responsibility. We provide accurate commercial invoices, HS codes and certificates of origin to support clearance, but we cannot advise on the duty rate that your customs authority will apply.

Yes. Products that require refrigerated or frozen storage are packed in insulated shippers with gel packs or dry ice sized for the expected transit. Dry ice is itself a regulated dangerous good and is declared as such. For long routes we will advise on the risk, and temperature data loggers can be added on request.