186693-87-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 186693-87-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,6,6,9 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 186693-87:
(8*1)+(7*8)+(6*6)+(5*6)+(4*9)+(3*3)+(2*8)+(1*7)=198
198 % 10 = 8
So 186693-87-8 is a valid CAS Registry Number.
186693-87-8Relevant articles and documents
Syntheses of knerachlin A and knerachlin B
Huang, Chusheng,Da, Shijun,Li, Ying,Li, Yulin
, p. 277 - 278 (2007/10/03)
The first total syntheses of knerachlin A and knerachlin B are described, starting from 2,4,6-trihydroxyacetophenone and 2,6- dihydroxyacetophenone, respectively. The key step in the synthesis is the condensation of ketone 5 with cinnamaldehyde.