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178421-64-2

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178421-64-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 178421-64-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,4,2 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 178421-64:
(8*1)+(7*7)+(6*8)+(5*4)+(4*2)+(3*1)+(2*6)+(1*4)=152
152 % 10 = 2
So 178421-64-2 is a valid CAS Registry Number.

178421-64-2Relevant articles and documents

Synthesis of homochiral tetrahydropteridines

Baker, Stephen J.,Beresford, Kenneth J.M.,Young, Douglas W.

, p. 7221 - 7228 (2017/09/13)

A synthesis of protected homochiral tetrahydropteridines from (2S)-malic acid has been developed. This presents methodology for the synthesis of reduced pteridine coenzymes and pharmaceuticals.

A straightforward synthesis of L-isoserinal

Junquera, Federico,Merchan, Francisco L.,Merino, Pedro,Tejero, Tomas

, p. 7045 - 7052 (2007/10/03)

A convenient preparation of L-isoserinal 3 in six steps and 32.8% overall yield employing D-glyceraldehyde acetonide I as starting material is described. The procedure is inexpensive, easily scaled up and proceeds without observable racemization.

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