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94477-91-5

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94477-91-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 94477-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,4,4,7 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 94477-91:
(7*9)+(6*4)+(5*4)+(4*7)+(3*7)+(2*9)+(1*1)=175
175 % 10 = 5
So 94477-91-5 is a valid CAS Registry Number.

94477-91-5Downstream Products

94477-91-5Relevant articles and documents

Oligophosphaalkanes, VI. Syntheses and NMR Spectroscopic Characterization of PH-functional Methylene Bridged Diphosphanes R2P-CH2-PRH and HRP-CH2-PRH

Hietkamp, Sibbele,Sommer, Herbert,Stelzer, Othmar

, p. 3400 - 3413 (2007/10/02)

1,3-Diphosphapropane, H2P-CH2-PH2 (1) was synthesized in about 40 percent yield by reduction of Cl2P-CH2-PCl2 with LiAlH4.The mono-, di-, and tri-substituted derivatives RHP-CH2-PH2 (R = iPr, CH2Ph, 3a, b) RHP-CH2-PHR (R = iPr, CH2Ph, tBu, 5a - c), R2P-CH2-PRH (R = Me, iPr, CH2Ph, 10b, 7a, b) are accessible using Cl2P-CH2-PCl2 as a starting material.A multiple stage synthesis based on MePCl2 affords the disecondary phosphane MeHP-CH2-PMeH (10d), which in contrast to reports given in the literature is thermally stable to at least 100 deg C.The 31P and 1H NMR spectra of 1 have been analyzed and simulated by use of computer programs.The structure of the phosphanes is discussed on the basis of their 1H, 31P, 31P, and 13C NMR spectra.

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