139685-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139685-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,8 and 5 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139685-67:
(8*1)+(7*3)+(6*9)+(5*6)+(4*8)+(3*5)+(2*6)+(1*7)=179
179 % 10 = 9
So 139685-67-9 is a valid CAS Registry Number.
139685-67-9Relevant academic research and scientific papers
Enantiospecific syntheses of paeonilactone A, paeonilactone B, 7S-paeonimetabolin-I, and 7R-paeonimetabolin-I from R-(-)-carvone
Hatakeyama,Kawamura,Shimanuki,Takano
, p. 333 - 336 (2007/10/02)
The first enantiospecific syntheses of the title monoterpenes have been accomplished starting with R-(-)-carvone, which made their absolute structures unequivocal.
