Montelukast EP Impurity H is supplied by Chemicea Pharmaceuticals Pvt. Ltd. as a research only reference standard intended for controlled laboratory use. This material supports analytical activities such as impurity comparison, method verification and internal quality assessment. It is suitable for research environments where documented impurity reference standards are required for routine analytical work. The product is provided with supporting documentation to assist traceability and compliance review. Montelukast EP Impurity H is available in defined pack sizes to meet varied research needs. It is not intended for therapeutic, diagnostic or clinical applications and is supplied strictly for non pharmacological research purposes.