India · Impurity Reference Standards

Impurity Standards supply to India

Zemixal supplies 20,060 products from its impurity reference standards range to buyers in India. Demand there comes mainly from generic pharmaceuticals and APIs, agrochemicals and dyes and pigments. Regular consignments go to industrial centres such as Ahmedabad–Vadodara–Ankleshwar–Vapi (Gujarat), Mumbai–Thane–Tarapur (Maharashtra) and Hyderabad (Telangana). Typical customers for this division are pharma QC and analytical development labs, regulatory affairs teams and contract research organisations.

India Sample products

20,060products in this division

1–7 droad delivery in India

6categories

Supplying impurity reference standards to India

Within India we dispatch by road from our Vapi base, with the GST invoice, e-way bill and lorry receipt in the consignment. The relevant authority is CDSCO (DCGI). Our export desk lines up the COA, GHS SDS and shipping documents to match. 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 India

Authority	CDSCO (DCGI)
Dispatch ports	Nhava Sheva (JNPT), Mundra, Chennai
Airports	Mumbai (BOM), Ahmedabad (AMD)
Dangerous goods	IMDG by sea, IATA DGR by air

Domestic orders are supplied on a GST tax invoice, with an e-way bill for consignments above the prescribed value. Petroleum-class solvents fall under PESO rules for storage and transport, so we may ask for a copy of the buyer's PESO licence. Precursor chemicals controlled under the NDPS framework need registration and quota records with the Narcotics Control Bureau. Several chemicals are covered by BIS Quality Control Orders. APIs are supplied only to licensed buyers under CDSCO norms.

Domestic timeline

0–1 daysOrder confirmed on a GST quote
Your GSTIN goes on the tax invoice for input credit.
1–3 daysPacking at Vapi, Gujarat
Stock items leave quickly. Made-to-order material adds its own lead time.
1–7 daysRoad transport with e-way bill
Western India in 1–3 days, other regions in 3–7 days.
1–2 daysAir courier for small packs
Reference standards and lab packs can travel by air.

Documents for India

Tax Invoice (GST)
E-way Bill
Delivery Challan / Lorry Receipt (LR)
Packing List
Certificate of Analysis (COA)
Safety Data Sheet (16-section GHS)
NDPS precursor documentation (Form/quota records) where applicable
PESO licence copy of buyer for petroleum-class solvents 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 India

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

Full impurity reference standards range

Regorafenib Impurity E

CAS: 2098799-13-2
Formula: C₃₅H₂₃Cl₂F₇N₆O₅
MW: 811.5 g/mol

ZX-005245

Regorafenib Impurity V

CAS: 2188236-16-8
Formula: C₂₁H₁₆F₄N₄O₃
MW: 448.4 g/mol

ZX-005246

Rel-Sacubitril (2R,4R) Isomer

CAS: 766480-48-2
Formula: C₂₄H₂₉NO₅
MW: 411.5 g/mol

ZX-005247

Relugolix Des Methyl Impurity Stage-I

CAS: 308831-94-9
Formula: C₂₄H₂₂F₂N₂O₆S
MW: 504.5 g/mol

ZX-005248

Relugolix Impurity 34

CAS: 1589503-95-6
Formula: C₂₄H₂₃F₂N₃O₆S
MW: 519.5 g/mol

ZX-005249

Relugolix Impurity 61

CAS: 2814571-32-7
Formula: C₂₆H₂₄F₂N₆O₄S
MW: 554.6 g/mol

ZX-005250

Relugolix Impurity B

CAS: 1589503-93-4
Formula: C₂₇H₂₄F₂N₆O₃S
MW: 550.6 g/mol

ZX-005251

Relugolix Impurity-20 (Stage-V)

CAS: 2767571-66-2
Formula: C₂₆H₂₆F₂N₆O₂S
MW: 524.6 g/mol

ZX-005252

Relugolix NH-OH Impurity (N-1Stage)

CAS: 1589503-96-7
Formula: C₂₇H₂₂F₂N₆O₅S
MW: 580.6 g/mol

ZX-005253

Relugolix NH-OH Impurity (Stage-1)

CAS: 1589503-94-5
Formula: C₆₇H₆₅BrN₇O₁₄PS₄
MW: 1431.4 g/mol

ZX-005254

Remdesivir Diastereomer Impurity

CAS: 1911578-75-0
Formula: C₂₇H₃₅N₆O₈P
MW: 602.6 g/mol

ZX-005255

Remdesivir Impurity 20

CAS: 1884576-18-4
Formula: C₃₀H₃₉N₆O₈P
MW: 642.6 g/mol

ZX-005256

Questions

Impurity Reference Standards for India

Do you ship impurity standards to India?

Yes. Orders are dispatched by road from Vapi with a GST invoice and e-way bill, and small packs can go by air courier. Every lot carries a COA and GHS SDS.

Which documents come with a impurity standards shipment to India?

Commercial invoice, packing list, certificate of analysis and SDS as standard, plus the GST tax invoice and e-way bill.

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 India

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

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