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99142-73-1

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99142-73-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99142-73-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,1,4 and 2 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 99142-73:
(7*9)+(6*9)+(5*1)+(4*4)+(3*2)+(2*7)+(1*3)=161
161 % 10 = 1
So 99142-73-1 is a valid CAS Registry Number.

99142-73-1Downstream Products

99142-73-1Relevant articles and documents

Polarized Ketene Dithioacetals. Part 42. Studies on the Reactions of Alkyl and Aryl Grignard Reagents with α-Oxoketene Dithioacetals

Singh, Gurdeep,Purkayastha, Makhan L.,Ila, Hiriyakkanavar,Junjappa, Hiriyakkanavar

, p. 1289 - 1294 (2007/10/02)

The oxoketene dithioacetals (2a-k) derived from a variety of cyclic and acyclic active methylene ketones undergo 1,2-addition with methylmagnesium iodide to give the alcohol acetals (3a-k) which, on subsequent boron trifluoride-ether catalysed methanolysi

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