Four Newman projection formula of compound CH2OH–CHOH–CHOH–CHO are shown below: Which of the above represents erythro isomer?

Engineering

Chemistry

Stereoisomerism

Optical Isomerism

IUPAC Nomenclature of Organic Compound

Question

Four Newman projection formula of compound CH₂OH–CHOH–CHOH–CHO are shown below:

Which of the above represents erythro isomer?

I and II

II and IV

I and III

I and IV

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Fischer projection representation of I & IV are