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357400-76-1

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357400-76-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 357400-76-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,5,7,4,0 and 0 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 357400-76:
(8*3)+(7*5)+(6*7)+(5*4)+(4*0)+(3*0)+(2*7)+(1*6)=141
141 % 10 = 1
So 357400-76-1 is a valid CAS Registry Number.

357400-76-1Relevant articles and documents

Selective reduction of the 7-oxo group in pyrido[2,3d]pyrimidine-4,7- diones: A new synthetic approach to 5,10-dideazatetrahydrofolic acid (DDATHF)

Borrell, José I.,Teixidó, Jordi,Matallana, Josep Lluís,Martínez-Teipel, Blanca,Couceiro, Esther

, p. 1207 - 1214 (2000)

A selective reduction of the carbonyl group at C7 with borane in THF is accomplished for 2,4-diamino-7-oxo and 2-amino-4,7-dioxo substituted pyridopyrimidines (7a-c) and (13a-c) respectively, the ester group remaining unaltered in both cases. The synthesi

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