(R)-4'-phospho-N-pantothenoyl-L-cysteine 4'-P-N-pantothenoylcysteine 4'-phospho-N-pantothenoylcysteine 4'-phosphopantothenoylcysteine 4-P-N-pantothenoylcysteine 4-PHOSPHOPANTOTHENOYLCYSTEINE N-((R)-4-phosphopantothenoyl)-L-cysteine