71787-04-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71787-04-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,8 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 71787-04:
(7*7)+(6*1)+(5*7)+(4*8)+(3*7)+(2*0)+(1*4)=147
147 % 10 = 7
So 71787-04-7 is a valid CAS Registry Number.
71787-04-7Relevant articles and documents
Synthesis of 5-Hydroxy-3,7,8,2',4'-pentamethoxyflavone
Pathak, V. P.,Khanna, R. N.
, p. 891 - 892 (2007/10/02)
The title flavone (II) has been synthesised starting from 2'-hydroxy-2,4,4',6'-tetramethoxychalkone (VII).VII on treatment with H2O2 in the presence of alkali gives 3-hydroxy-5,7,2',4'-tetramethoxyflavone (III), which on methylation affords 3,5,7,2',4'-pe