PyBOP

Names
IUPAC name

(Benzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate

Other names

PyBOP

Identifiers

CAS Number

* 128625-52-5 N

3D model (JSmol)

* Interactive image

ChemSpider |

* 2006820 Y

PubChem CID

* 2724699

UNII |

* Y6KQR4GY6T Y

InChI

* InChI=1S/C18H28N6OP.F6P/c1-2-10-18-17(9-1)19-20-24(18)25-26(21-11-3-4-12-21,22-13-5-6-14-22)23-15-7-8-16-23;1-7(2,3,4,5)6/h1-2,9-10H,3-8,11-16H2;/q+1;-1 Y

Key: VIAFLMPQBHAMLI-UHFFFAOYSA-N Y

* InChI=1/C18H28N6OP.F6P/c1-2-10-18-17(9-1)19-20-24(18)25-26(21-11-3-4-12-21,22-13-5-6-14-22)23-15-7-8-16-23;1-7(2,3,4,5)6/h1-2,9-10H,3-8,11-16H2;/q+1;-1

Key: VIAFLMPQBHAMLI-UHFFFAOYAY

SMILES

* F[P-](F)(F)(F)(F)F.n4nn(O[P+](N1CCCC1)(N2CCCC2)N3CCCC3)c5ccccc45

Properties

Chemical formula

| C18H28F6N6OP2
Molar mass | 520.401 g·mol−1
Appearance  | White crystals
Melting point |  150 °C (302 °F; 423 K)
Hazards
Main hazards | Irritant
GHS pictograms |
GHS Signal word | Warning

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

N verify (what is YN ?)
Infobox references

Tracking categories (test):

* SizeSet

PyBOP (benzotriazol-1-yloxytripyrrolidinophosphonium hexafluorophosphate) is a peptide coupling reagent used in solid phase peptide synthesis. It is used as a substitute for the BOP reagent \- avoiding the formation of the carcinogenic waste product HMPA.[3]

## See also

* BOP reagent
* DEPBT, a related reagent that contains no phosphorus-nitrogen bonds
* HATU
* HBTU

## References

1. ↑ Sigma-Aldrich Co., product no. {{{id}}}.
2. ↑ GHS: Sigma-Aldrich377848
3. ↑ Coste, J.; Le-Nguyen, D.; Castro, B. (1990). "PyBOP®: A new peptide coupling reagent devoid of toxic by-product". Tetrahedron Letters 31 (2): 205. doi:10.1016/S0040-4039(00)94371-5.

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*[CID]: Compound ID