Author (Printed course material, OUSL)
- Perera, K. S. D., Alwis, D. D. D. H., Saparamadu, M. D. J. S., Ranasinghe, C., Thulasi, S., Bamdarage, G., Haniffa, M. R. M. (2017), Basic Practical Chemistry CYU3302, The Open University of Sri Lanka, ISBN:
- Gunaratne, R. D., Ranasinghe, C., CMF2205 (2012) Organic Chemistry I (Unit V), The Open University of Sri Lanka, ISBN: 978-955-23-1404-4
- Ranasinghe, C., Ratnayake, R. M. R. P., CMF2206 (2013) Organic Chemistry II (Unit II), The Open University of Sri Lanka, ISBN 978-955-23-1280-9
- Ranasinghe, C., Saparamadu, M. D. J. S., CMF2206 (2013) Introduction to chemical analysis (Unit V), The Open University of Sri Lanka, ISBN: 978-955-23-1402-5
- Gunapala, M. D., Saparamadu, M. D. J. S., Ranasinghe, C., PSC1222 (2009) Organic molecules and Radioisotopes, (Unit IV), ISBN: 978-955-23-1140-6
Author (Online lesson materials, OUSL)
- Ranasinghe, C., CYD3314 (2022) Spices and essential oils (Unit V), The Open University of Sri Lanka
- Ranasinghe, C., CYD3601(2023), Recrystallization and Melting point determination (Unit V), The Open University of Sri Lanka
- Ranasinghe, C., CYD3601 (2023), Chromatography (Unit VI), The Open University of Sri Lanka
Content Editor (Printed course material)
- Ranasinghe, C., CMF2206 (2023) Applications in Chemistry (Unit VI) The Open University of Sri Lanka, ISBN 978-955-23-1351-6
Editor (Conversion to SLQF format)
- Ranasinghe, C., CYU3300 (Revised edition 2018) Chemistry of some hydrocarbons, halo hydrocarbons and oxygenated organic compounds (Unit III), The Open University of Sri Lanka, ISBN 978-955-23-1078-2 (old number)
- Ranasinghe, C., CYU4303 (Revised edition 2018) Stereochemistry (Unit I), The Open University of Sri Lanka, Experimental copy
- Ranasinghe, C., CYU4303 (Revised edition 2018) Organic reaction mechanisms (Unit II), The Open University of Sri Lanka, Experimental copy=
- Ranasinghe, C., CYU4303 (Revised edition 2018) Structure reactivity relationships of some aliphatic compounds (Unit III), The Open University of Sri Lanka, Experimental copy
- Ranasinghe, C., CYU4303 (Revised edition 2018) Chemistry of conjugated dienes and benzenoid compounds (Unit IV), Experimental copy
- Ranasinghe, C., Abeysinghe, D. T., CYU5303 (2018). Spectroscopic methods of structure determination (Unit IV) The Open University of Sri Lanka, ISBN 955-23-0663-9
Translator (Printed course material, OUSL)
- Ranasinghe, C., Pathirage, P.M. I. K., Seneviratne, S. A., CMU1220 (2009). Chemistry of some hydrocarbons, halo hydrocarbons and oxygenated organic compounds (Unit III), The Open University of Sri Lanka, ISBN 955-955-23-1079-9 (Sinhala)
Editor (OER Material, OUSL); http://www.ou.ac.lk/oer-chemistry/
- Fats, oils and detergents (2014, Department of Chemistry, Author: Perera. K. S. D.)
- Health and medicine (2014, Department of Chemistry, Author: Perera. K. S. D.)
- Food additives (2014, Department of Chemistry, Author: Perera. K. S. D.)
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