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191998-91-1

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191998-91-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191998-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,9,9 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 191998-91:
(8*1)+(7*9)+(6*1)+(5*9)+(4*9)+(3*8)+(2*9)+(1*1)=201
201 % 10 = 1
So 191998-91-1 is a valid CAS Registry Number.

191998-91-1Upstream product

191998-91-1Downstream Products

191998-91-1Relevant articles and documents

Original synthesis of 1,2-oxathiolan-2-oxides and vinyl cyclopropane carboxylic esters

Krief, Alain,Provins, Laurent

, p. 505 - 507 (2007/10/03)

1,2-Oxathiolan-2-oxides or vinyl cyclopropane carboxylic esters are prepared chemoselectively and in rather good yields from methyl 2,4-pentadienoate, tributylstannyllithium and carbonyl compounds. The later are formally deoxygenated in the process and play the role of carbenes.

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