Cleanchem Laboratories LLP is an independent reliable R&D based custom manufacturing company (CRAMS) delivering its numerous leading products to pharmaceutical, chemical, Sulfate Impurities, clinical research, specialty chemical, academic and government research institutions and healthcare industry. Cleanchem is fully research driven organization dealing with custom synthesis of impurity reference standards, NCE Building blocks, specialty chemicals, intermediates, complex organic chemicals for biomedical and pharmaceutical research. We also provide supplementary products such as secondary reference standards which are compared to USP, IP, EP or BP and accompanied with an advanced certificate of analysis (CoA).