128890-36-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128890-36-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,8,9 and 0 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 128890-36:
(8*1)+(7*2)+(6*8)+(5*8)+(4*9)+(3*0)+(2*3)+(1*6)=158
158 % 10 = 8
So 128890-36-8 is a valid CAS Registry Number.
128890-36-8Relevant articles and documents
Synthesis of Benzopyran Derivatives, XV Preparation of Arylsulfonyloxy-2,2-dimethyl-2H-chromenes
Levai, Albert,Toth, Gabor,Szoelloesy, Aron,Timar, Tibor
, p. 403 - 411 (2007/10/02)
Arylsulfonyloxy-2,2-dimethyl-2H-chromenes (26-35) have been synthesized by reduction of arylsulfonyloxy-2,2-dimethyl-4-chromanones (6-15) followed by dehydration.