Cas 166540-10-9,4-benzyloxycarbonylamino-3-oxo-2-(triphenyl-λ<sup>5</sup>-phosphanylidene)-butyric acid ethyl ester

166540-10-9

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Basic information

Product Name: 4-benzyloxycarbonylamino-3-oxo-2-(triphenyl-λ⁵-phosphanylidene)-butyric acid ethyl ester
Synonyms: 4-benzyloxycarbonylamino-3-oxo-2-(triphenyl-λ⁵-phosphanylidene)-butyric acid ethyl ester
CAS NO:166540-10-9
Molecular Formula:
Molecular Weight: 539.568
EINECS: N/A
Product Categories: N/A

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: 4-benzyloxycarbonylamino-3-oxo-2-(triphenyl-λ⁵-phosphanylidene)-butyric acid ethyl ester(CAS DataBase Reference)
NIST Chemistry Reference: 4-benzyloxycarbonylamino-3-oxo-2-(triphenyl-λ⁵-phosphanylidene)-butyric acid ethyl ester(166540-10-9)
EPA Substance Registry System: 4-benzyloxycarbonylamino-3-oxo-2-(triphenyl-λ⁵-phosphanylidene)-butyric acid ethyl ester(166540-10-9)

Safety Data

Hazard Codes: N/A
Statements: N/A
Safety Statements: N/A
WGK Germany:
RTECS:
HazardClass: N/A
PackingGroup: N/A
Hazardous Substances Data: 166540-10-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 166540-10-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,5,4 and 0 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 166540-10:
(8*1)+(7*6)+(6*6)+(5*5)+(4*4)+(3*0)+(2*1)+(1*0)=129
129 % 10 = 9
So 166540-10-9 is a valid CAS Registry Number.

166540-10-9Upstream product

166540-10-9Downstream Products

1105712-34-2 4-amino-1-ethoxy-2-(triphenylphosphoranylidene)butan-1,3-dione hydrobromide

166540-10-9Relevant academic research and scientific papers

Triphenylphosphoranylidene substituted heterocycles as versatile intermediates

Katritzky, Alan R.,Vincek, Adam S.,Steel, Peter J.

experimental part, p. 1401 - 1423 (2009/07/17)

N-Cbz-(α-aminoacyl)benzotriazoles 5a-e reacted with (stabilized-methylene)triphenylphosphoranes 6 and 13 to give the corresponding esters 7a-e (66-91%) or nitriles 14a-e (63-85%). Deprotection of N-Cbz-γ-amino-β-oxo-α-triphenylphosphoranylidene esters 7a-

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