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骨化三醇   Calcitriol 

Chemical Formula：C27H44O3

CAS No.: 32222-06-3   MW: 416.65 

(1S,3R,Z)-5-(2-((1R,3aS,7aR,E)-1-((R)-6-hydroxy-6-methylheptan-2-yl)-7a-methyloctahydro-4H-inden-4-ylidene)ethylidene)-4-methylenecyclohexane-1,3-diol

骨化三醇杂质A    Calcitriol Impurity A

5,6-trans-Calcitriol;  trans Calcitriol

Chemical Formula：C27H44O3

CAS No.: 73837-24-8   MW: 416.65 

(1R,3S,E)-5-(2-((1R,3aS,7aR,E)-1-((R)-6-hydroxy-6-methylheptan-2-yl)-7a-methyloctahydro-4H-inden-4-ylidene)ethylidene)-4-methylenecyclohexane-1,3-diol

骨化三醇杂质B    Calcitriol Impurity B

1-epi-Calcitriol;  1β-Calcitriol

Chemical Formula：C27H44O3

CAS No.: 66791-71-7   MW: 416.65 

(1R,3R,Z)-5-(2-((1R,3aS,7aR,E)-1-((R)-6-hydroxy-6-methylheptan-2-yl)-7a-methyloctahydro-4H-inden-4-ylidene)ethylidene)-4-methylenecyclohexane-1,3-diol

骨化三醇杂质C    Calcitriol Impurity C

pre-Calcitriol PTAD Adduct;  Triazoline adduct of Pre-calcitriol

Chemical Formula：C35H49N3O5

CAS No.: 86307-44-0   MW: 591.79 

(6aR,7R,9aR)-11-((3S,5R)-3,5-dihydroxy-2-methylcyclohex-1-en-1-yl)-7-((R)-6-hydroxy-6-methylheptan-2-yl)-6a-methyl-2-phenyl-4a,6,6a,7,8,9,9a,11-octahydro-1H,5H-cyclopenta[f][1,2,4]triazolo[1,2-a]cinnoline-1,3(2H)-dione

骨化三醇杂质D    Calcitriol Impurity D

24-Homo Calcitriol;  Methylene Calcitriol

Chemical Formula：C28H46O3

CAS No.: 103656-40-2   MW: 430.67 

(1R,3S,Z)-5-(2-((1R,3aS,7aR,E)-1-((R)-7-hydroxy-7-methyloctan-2-yl)-7a-methyloctahydro-4H-inden-4-ylidene)ethylidene)-4-methylenecyclohexane-1,3-diol