Mass Spec Flashcards by Emma Ruffett

Q

What does M+ give you

A

Molecular weight of compound

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Q

What does Mass Spec tell you?

A

The orientation of molecule fragments

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Q

What does an odd molecular weight signify?

A

Odd number of nitrogen’s

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Q

15 amu

A

Loss of methyl group

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Q

29 amu

A

CH3CH2+

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Q

43 amu

A

CH3CH2CH2/ isopropyl/
acylium ( CH3-C=O )

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Q

77-78 amu

A

77 Mono sub benzene
78 full benzene

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Q

91 amu

A

Mono sun benzene with methyl group. Or tropyllium

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Q

105 amu

A

Benzene with mono sun acylium

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