a pyrimidine ribonucleoside + H2O = a pyrimidine nucleobase + D-ribose
a pyrimidine ribonucleoside + h2o = a pyrimidine nucleobase + d-ribose
a pyrimidine ribonucleoside + H2O = a pyrimidine nucleobase + D-ribose
a pyrimidine ribonucleoside + h2o = a pyrimidine nucleobase + d-ribose