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99309-85-0

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99309-85-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99309-85-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,3,0 and 9 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 99309-85:
(7*9)+(6*9)+(5*3)+(4*0)+(3*9)+(2*8)+(1*5)=180
180 % 10 = 0
So 99309-85-0 is a valid CAS Registry Number.

99309-85-0Downstream Products

99309-85-0Relevant articles and documents

Tandem Alkylation-Reduction. Highly Stereoselective Synthesis of (E)-1-Hydroxymethyl Methyl Propenyl Ethers from Aldehydes Using 1-Lithio-1-methoxyallene

Weiberth, Franz J.,Hall, Stan S.

, p. 5308 - 5314 (2007/10/02)

Tandem alkylation-reduction of a series of aldehydes, by alkylating with 1-lithio-1-methoxyallene followed by reducing with lithium-ammonia, regiospecifically and highly stereoselectively affords the 1-hydroxymethyl methyl propenyl ether in which the alkene geometry is exclusively E.Aldehydes that have been subjected to this convenient procedure include aromatic, aliphatic, and heterocyclic aldehydes.Subsequent hydrolysis, in the aromatic and aliphatic cases, affords the corresponding α-hydroxy ethyl ketones.The stereochemistry of the propenyl ethers was established by 13C NMR spectroscopy.A mechanism for the selective reduction of the methoxyallene system is proposed.

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