The Phosphonium,(2-carboxyethyl)triphenyl-, chloride (1:1), with the CAS registry number 36626-29-6, has the systematic name of (2-carboxyethyl)(triphenyl)phosphonium chloride. It is a kind of white solid, and it belongs to the product categories of Phosphorylating and Phosphitylating Agents. And the molecular formula of the chemical is C₂₁H₂₀ClO₂P.

The characteristics of Phosphonium,(2-carboxyethyl)triphenyl-, chloride (1:1) are as followings: (1)#H bond acceptors: 2; (2)#H bond donors: 1; (3)#Freely Rotating Bonds: 6; (4)Polar Surface Area: 26.3 Å². 

Uses of Phosphonium,(2-carboxyethyl)triphenyl-, chloride (1:1): It can react with 4-methyl-benzaldehyde to produce 4-p-tolyl-but-3-enoic acid. This reaction will need reagent tert-BuOK, and the menstruum tetrahydrofuran. The reaction time is 10 hours with ambient temperature, and the yield is about 34%.

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Wear suitable protective clothing, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: [Cl-].O=C(O)CC[P+](c1ccccc1)(c2ccccc2)c3ccccc3
(2)InChI: InChI=1/C21H19O2P.ClH/c22-21(23)16-17-24(18-10-4-1-5-11-18,19-12-6-2-7-13-19)20-14-8-3-9-15-20;/h1-15H,16-17H2;1H
(3)InChIKey: GALLWJZTZYJVSL-UHFFFAOYAY