| http://www.w3.org/ns/prov#value | - Synthesis of monoalkylamino-type phosphoramidite compound represented by the following formula (2-21), wherein A1 is a hydrogen atom, B1 is a 1-thyminyl group, R2??? is a hydrogen atom, R3??? is a Tert-butyl group, R1 is a 4,4???-dimethoxytrityl group and Y is an isopropylamino group in the Formula (I-2) above.
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