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185897-11-4

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185897-11-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 185897-11-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,5,8,9 and 7 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 185897-11:
(8*1)+(7*8)+(6*5)+(5*8)+(4*9)+(3*7)+(2*1)+(1*1)=194
194 % 10 = 4
So 185897-11-4 is a valid CAS Registry Number.

185897-11-4Downstream Products

185897-11-4Relevant articles and documents

Synthesis and characterization of dioxorhenium complexes derived from water-soluble diphosphine tetraphosphonates

Reddy, V. Sreenivasa,Katti, Kattesh V.,Volkert, Wynn A.

, p. 4459 - 4462 (1996)

Water-soluble diphosphine tetraphosphonates [(RO)2OPCH2CH2]2P-X-P[CH 2CH2PO(OR)2]2 (X = C6H4 or C2H4, R = Et or Me) were synthesized in near-quantitative yields by a base-catalysed Michael addition of appropriate P-H bonded compounds to vinylphosphonates in the presence of potassium tert-butoxide. The reactions of these compounds with [ReO2I(PPh3)2] in biphasic media (aqueous-organic) produced water-soluble dioxorhenium complexes of the type [ReO2{[(RO)2OPCH2CH2] 2P-X-P(CH2CH2PO(OR)2] 2}2]+ in nearquantitative yields. The water-soluble phosphines and their rhenium complexes were characterized by IR, 1H and 31P NMR and high-resolution fast atom bombardment mass spectral analysis.

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