81309-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81309-99-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,0 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 81309-99:
(7*8)+(6*1)+(5*3)+(4*0)+(3*9)+(2*9)+(1*9)=131
131 % 10 = 1
So 81309-99-1 is a valid CAS Registry Number.
81309-99-1Relevant academic research and scientific papers
TOTAL SYNTHESIS OF (+)-PRELOG-DJERASSI LACTONIC ACID
Isobe, Minoru,Ichikawa, Yoshiyasu,Goto, Toshio
, p. 4287 - 4290 (2007/10/02)
Optically active Prelog-Djerassi Lactonic Acid 1 was synthesized from D-glucal; the crucial point being the elaboration of the carboxylic group as shown eq. 1 and 2 which involve the sequential process asymmetric addition of methyl anion onto the hete
