21905-77-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21905-77-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,0 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21905-77:
(7*2)+(6*1)+(5*9)+(4*0)+(3*5)+(2*7)+(1*7)=101
101 % 10 = 1
So 21905-77-1 is a valid CAS Registry Number.
21905-77-1Relevant academic research and scientific papers
Synthesis of potential anticonvulsants: Condensation of isatins with acetone and related ketones
Popp,Parson,Donigan
, p. 1235 - 1237 (2007/10/02)
Substituted isatins were condensed with acetone and other ketones to give analogs of 3-hydroxy-3-acetonyloxindole. Some of these alcohols were dehydrated. Several compounds with anticonvulsant activity were obtained.
