199529-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199529-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,5,2 and 9 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 199529-67:
(8*1)+(7*9)+(6*9)+(5*5)+(4*2)+(3*9)+(2*6)+(1*7)=204
204 % 10 = 4
So 199529-67-4 is a valid CAS Registry Number.
199529-67-4Relevant articles and documents
A novel synthesis of 9,13-dicis double bonds locked retinoids
Qing, Feng-Ling,Yue, Xiang-Jun
, p. 8067 - 8070 (1997)
Synthesis of two retinoids in which the 9,13-dicis double bonds were locked in cycloalkene or thiophene was described. The key step was carbonylation of vinyl bromide 9 and 16 with carbon monoxide in the presence ofPd(PPh3)4.
