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1417787-27-9

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1417787-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1417787-27-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,1,7,7,8 and 7 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1417787-27:
(9*1)+(8*4)+(7*1)+(6*7)+(5*7)+(4*8)+(3*7)+(2*2)+(1*7)=189
189 % 10 = 9
So 1417787-27-9 is a valid CAS Registry Number.

1417787-27-9Downstream Products

1417787-27-9Relevant articles and documents

Diversity oriented efficient access of trisubstituted purines via sequential regioselective Mitsunobu coupling and SNAr based C 6 functionalizations

Manvar, Atul,Shah, Anamik

, p. 680 - 691 (2013/07/25)

An efficient protocol for the syntheses of diverse 2,6,7- and 2,6,9-trisubstituted purines is reported starting from the guanine precursor, 2amino-6-chloropurine nucleoside through subsequent regioselective, high yielding Mitsunobu coupling and nucleophilic substitutions at C6 with versatile primary and secondary amines. A wide range of 2,6,7- and 2,6,9-trisubstituted purines were accessible in good to excellent yields with remarkable functional group tolerance. Moreover, solvent-free, large scale synthesis of precursors 2 & 3 and facile preparation of organophosphorus side chains 4 & 5 were also accomplished with excellent yields.

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