137988-12-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137988-12-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,9,8 and 8 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137988-12:
(8*1)+(7*3)+(6*7)+(5*9)+(4*8)+(3*8)+(2*1)+(1*2)=176
176 % 10 = 6
So 137988-12-6 is a valid CAS Registry Number.
137988-12-6Relevant articles and documents
Chemistry of modified flavonoids. 19. Synthesis of phenoxyl analogs of isoflavone
Arkhipov,Smirnov,Khilya
, p. 515 - 519 (2007/10/03)
2,4-Dihydroxyphenoxyacetophenones were obtained by the reaction of resorcinol with phenoxyacetonitrile under the conditions of the Houben-Hoesch reaction. Their cyclization under the conditions of acid and alkaline catalysis gave new derivatives of 3-phen