CAS 156311-83-0 ((7-Azabenzotriazol-1-YL)oxy)tris(pyrrolidino)phosphonium hexafluorophosphate (HCID 11038641)

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Basic information

CAS: 156311-83-0
Standard SMILES: F[P-](F)(F)(F)(F)F.c1cnc2c(c1)nnn2O[P+](N1CCCC1)(N1CCCC1)N1CCCC1
InChIKey: CBZAHNDHLWAZQC-UHFFFAOYSA-N
Molecular formula: C17H27F6N7OP2
Average molar mass: 521.4 g/mol
Monoisotopic mass: 521.16565148

Names & identifiers

Preferred name: ((7-Azabenzotriazol-1-YL)oxy)tris(pyrrolidino)phosphonium hexafluorophosphate
IUPAC: tripyrrolidin-1-yl(triazolo[4,5-b]pyridin-3-yloxy)phosphanium hexafluorophosphate
English name: (3-Hydroxy-3H-1,2,3-triazolo[4,5-b]pyridinato-O)tri-1-pyrrolidinylphosphonium hexafluorophosphate
Molecular formula: C17H27F6N7OP2
Molecular weight: 521.39

Names & synonyms

156311-83-0PyAOPPYAOP REAGENTC5Z532MU8E[(7-Azabenzotriazol-1-yl)oxy]tris(pyrrolidino)phosphonium hexafluorophosphatePhosphorus(1+), [3-(hydroxy-kappaO)-3H-1,2,3-triazolo[4,5-b]pyridinato]tri-1-pyrrolidinyl-, (T-4)-, hexafluorophosphate(1-) (1:1)Phosphorus(1+), (3-hydroxy-3H-1,2,3-triazolo(4,5-b)pyridinato-O)tri-1-pyrrolidinyl-, (T-4)-, hexafluorophosphate(1-)((7-Azabenzotriazol-1-yl)oxy)tris(pyrrolidino)phosphonium hexafluorophosphatePHOSPHONIUM, TRI-1-PYRROLIDINYL(3H-1,2,3-TRIAZOLO(4,5-B)PYRIDIN-3-YLOXY)-, HEXAFLUOROPHOSPHATE(1-)PHOSPHORUS(1+), (3-(HYDROXY-.KAPPA.O)-3H-1,2,3-TRIAZOLO(4,5-B)PYRIDINATO)TRI-1-PYRROLIDINYL-, (T-4)-, HEXAFLUOROPHOSPHATE(1-) (1:1)PHOSPHORUS(1+), (3-(HYDROXY-KAPPAO)-3H-1,2,3-TRIAZOLO(4,5-B)PYRIDINATO)TRI-1-PYRROLIDINYL-, (T-4)-, HEXAFLUOROPHOSPHATE(1-) (1:1)Phosphorus(1+), [3-(hydroxy-.kappa.O)-3H-1,2,3-triazolo[4,5-b]pyridinato]tri-1-pyrrolidinyl-, (T-4)-, hexafluorophosphate(1-) (1:1)

Show more names

(7-Azabenzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate 96%

Properties

Computed structural properties

Topological polar surface area: 62.6 Å²
Hydrogen bond donors: 0
Hydrogen bond acceptors: 14
Rotatable bonds: 5
Heavy atoms: 33
Formal charge: 0
Complexity: 502

Physicochemical properties

Melting point: 163 · 163-168 °C(lit.)
RTECS: 3890000 · TH3890000
storage temp.: -20 °C · -20°C
solubility: 1 % · Soluble in water or 1% acetic acid
form: Powder or Crystalline Powder
color: White to off-white
Water Solubility: Soluble in water.
Major Application: peptide synthesis
InChI: InChI=1S/C17H27N7OP.F6P/c1-2-11-21(10-1)26(22-12-3-4-13-22,23-14-5-6-15-23)25-24-17-16(19-20-24)8-7-9-18-17;1-7(2,3,4,5)6/h7-9H,1-6,10-15H2;/q+1;-1
InChIKey: CBZAHNDHLWAZQC-UHFFFAOYSA-N
SMILES: [P+5]([F-])([F-])([F-])([F-])([F-])[F-].[P+](N1CCCC1)(N1CCCC1)(N1CCCC1)ON1N=NC2C=CC=NC1=2
CAS DataBase Reference: 156311 · 156311-83-0(CAS DataBase Reference)
FDA UNII: 5 Z532MU8E · C5Z532MU8E
EPA Substance Registry System: 1 · Phosphorus(1+), [3-(hydroxy-.kappa.O)-3H-1,2,3-triazolo[4,5-b]pyridinato]tri-1-pyrrolidinyl-, (T-4)-, hexafluorophosphate(1-) (1:1) (156311-83-0)

Safety & regulation

GHS classification

GHS Classification · 5 items

Warning

H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]；H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]；H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 159 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.

Hazard information

Hazard Classes and CategoriesSkin Irrit. 2 (100%)；Eye Irrit. 2A (100%)；STOT SE 3 (100%)

Safety data

PPE: dust mask type N95 (US), Eyeshields, Gloves
wgk: 3
hs_code: 29339900
risk_code: 36/37/38
Signal word: Warning
Symbol(GHS): GHS07
hazard_code: Xi
safety_code: 26-36
Storage Class: 11 - Combustible Solids
target organs: Respiratory system
Hazard statements: H315-H319-H335

Chemistry & industry

Applications · 2 items

UsesPyAOP is a phosphonium salt used as a coupling reagent in solid-phase peptide synthesis, without undergoing side reactions with the amino terminus. PyAOP is a derivative of HOAt (H805070).

Uses(3-Hydroxy-3H-1,2,3-triazolo[4,5-b]pyridinato-O)tri-1-pyrrolidinylphosphonium hexafluorophosphate is used as a coupling reagent in solid phase peptide synthesis. It is preferred over HATU, because it does not side react at the N-terminus of the peptide. Compared to the HOBt derivates, PyAOP (and HOAt in general) are more reactive due to the additional nitrogen.