Cas 1631955-77-5,C15H21O7P

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Check Digit Verification of cas no

The CAS Registry Mumber 1631955-77-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,1,9,5 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1631955-77:
(9*1)+(8*6)+(7*3)+(6*1)+(5*9)+(4*5)+(3*5)+(2*7)+(1*7)=185
185 % 10 = 5
So 1631955-77-5 is a valid CAS Registry Number.

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1631955-77-5Relevant academic research and scientific papers

Phospha-Michael Addition to in Situ Prepared 5-Arylmethylidene Meldrum's Acids

Adib, Mehdi,Sheikhi, Ehsan,Rezaei, Narjes,Bijanzadeh, Hamid Reza,Mirzaei, Peiman

, p. 1331 - 1334 (2014)

Knoevenagel condensation reaction of an aldehyde and Meldrum's acid produces a 5-arylmethylidene Meldrum's acid, which undergoes Michael addition of a trialkyl phosphite under solvent-free conditions to afford the title compounds in good yields.

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