139448-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139448-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,4 and 8 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139448-30:
(8*1)+(7*3)+(6*9)+(5*4)+(4*4)+(3*8)+(2*3)+(1*0)=149
149 % 10 = 9
So 139448-30-9 is a valid CAS Registry Number.
139448-30-9Relevant academic research and scientific papers
Synthesis of Chiral Methyl Cucurbate and Its Analogs
Takehara, Jun,Oritani, Takayuki,Yamashita, Kyohei
, p. 2939 - 2944 (2007/10/02)
Natural (+)-(1R,2S,3S)-methyl cucurbate (1b) and the (-)-δ-lactone of 3-epi-cucurbic acid (16) were synthesized from (+)-(1R,6S,7R)-bicyclonon-3-en-7-ol (5).Asymmetric hydrolysis of the acetate (8) of (+/-)-5 with pancreatin gave optically pure the
