99933-47-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99933-47-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,3 and 3 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 99933-47:
(7*9)+(6*9)+(5*9)+(4*3)+(3*3)+(2*4)+(1*7)=198
198 % 10 = 8
So 99933-47-8 is a valid CAS Registry Number.
99933-47-8Relevant articles and documents
REGIOSELECTIVE PREPARATION OF VINYL CHLORIDES FROM 2-METHYLCYCLOHEXANONE
Hudrlik, Paul F.,Kulkarni, Ashok K.
, p. 1179 - 1182 (1985)
Treatment of 2-methylcylohexanone with PCl5 in hexane at reflux gives predominantly 2-chloro-3-methylcyclohexene (3).On the other hand, treatment with catechyl phosphorus trichloride followed by alcoholic KOH gives predominantly the isomeric vinyl chlorid