| Bencil- | Bzl- o PhCH2- |
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| Benzoxi- (Benciloxi-) |
BzlO- o PhCH2O- |
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| Benzoxicarbonil- (Benciloxicarbonil-) |
Cbz- o Z- |
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| Benzoil- | Bz- o PhCO- |
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| Benzhidril- | Bzh- o Ph2CH- |
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| terc-Butoxi- | ButO- |
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| terc-Butoxicarbonil- | Boc- o ButOCO- o t-BuOCO- |
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| Ciclohexil- | cHx- |
|
| 5-Dimetilaminonaftalenosulfonil- o Dansil- |
Dns- |
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| p-Toluenosulfonil- o Tosil- |
Tos- |
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| Trifenilmetil- o Tritil- |
Trt- o Ph3C- |
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| 9-Fluorenilmetoxicarbonil- | Fmoc- |
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