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149856-87-1

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149856-87-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149856-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,8,5 and 6 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 149856-87:
(8*1)+(7*4)+(6*9)+(5*8)+(4*5)+(3*6)+(2*8)+(1*7)=191
191 % 10 = 1
So 149856-87-1 is a valid CAS Registry Number.

149856-87-1Downstream Products

149856-87-1Relevant articles and documents

Synthesis of Hexacarbonyldicobalt-complexed Thiacycloalkynes

Gelling, Andrew,Mohmand, G. Farouq,Jeffery, John C.,Went, Michael J.

, p. 1857 - 1862 (2007/10/02)

Reaction of 1R2CCR1R2OH)(CO)6> (R1 = R2 = H or Me; R1 = H, R2 = Me) with HS(CH2)nSH (n = 2-5) or HS(CH2)2OH in the presence of HBF4*OEt2 affords predominantely monomeric hexacarbonyldicobalt-complexed thiacycloalkynes.In many cases, especially with the longer chain dithiols, dimeric compounds are also formed as minor products and in some cases higher oligomers have also been characterised.Reaction of CCH2OH)(CO)6> with HSCH2CH(OH)CH2SH affords complexed thiacycloalkynes with pendant hydroxyl functionalities.The monomeric complexes undergo carbonyl substitution with bis(diphenylphosphino)me thane (dppm) and the X-ray crystal structure of has been determined.The molecule contains a co-ordinated 1,4-dithiacyclooct-6-yne which adopts two conformations in the solid state.The IR, mass, (1)H and (13)C NMR spectra of the new compounds are discussed.

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