Isoniazid

Name: Isoniazid
Brand: Vaqora Chemicals
SKU: VQ-003929

About Isoniazid

Isoniazid is an antibacterial API in IP/BP/USP grade carrying the CAS registry number 54-85-3. Formula C6H7N3O, molecular weight 137.14 g/mol. Systematically, it is named pyridine-4-carbohydrazide. Common synonyms include Isonicotinic acid hydrazide and Isonicotinohydrazide.

The material typically appears as a white or almost crystaline powder. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Warning” with 2 hazard statements. Review the Safety Data Sheet before use.

This API belongs to our antibiotic and antibacterial APIs portfolio and is supplied to IP/BP/USP specifications for formulators, contract manufacturers and generic drug developers. It is used across pharmaceutical manufacturing.

We offer Isoniazid in 1 kg, 5 kg and 25 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Pharmaceutical formulation
Generic drug development

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Isoniazid
Catalogue No.	VQ-003929
CAS Number	54-85-3
IUPAC name	pyridine-4-carbohydrazide
Molecular formula	C₆H₇N₃O
Molecular weight	137.14 g/mol
Exact mass	137.0589
Grade	IP/BP/USP
HSN code	2941
InChIKey	QRXWMOHMRWLFEY-UHFFFAOYSA-N
SMILES	C1=CN=CC=C1C(=O)NN
PubChem CID	3767

Physical properties
Physical form	Crystalline
Appearance	A white or almost crystaline powder
LogP (XLogP3)	-0.7
H-bond donors / acceptors	2 / 3
TPSA	68 Å²
Synonyms	Isonicotinic acid hydrazide, Isonicotinohydrazide, Isoniazide, Cotinazin, Dinacrin, Iscotin, Cedin, Armazide, Ditubin, Neumandin, Atcotibine, Isonidrin

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation

Precautionary statements: P264, P270, P280, P301 + P317, P302 + P352, P321, P330, P332 + P317, P362 + P364, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 54-85-3

Synthesis

Isoniazide, 99%

CAS: 54-85-3
Formula: C₆H₇N₃O
MW: 137.14 g/mol

VQ-003197

Frequently asked questions

What is the CAS number of Isoniazid?

The CAS Registry Number of Isoniazid is 54-85-3. It is also known as Isonicotinic acid hydrazide, Isonicotinohydrazide, Isoniazide.

What is the molecular formula and molecular weight of Isoniazid?

Isoniazid has the molecular formula C6H7N3O and a molecular weight of 137.14 g/mol. Its IUPAC name is pyridine-4-carbohydrazide.

Which grade and pack sizes of Isoniazid can I order?

We supply Isoniazid in IP/BP/USP grade, in 1 kg, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Isoniazid?

Yes. Every lot of Isoniazid is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Isoniazid be shipped internationally?

Yes. Isoniazid is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.