158693-37-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158693-37-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,6,9 and 3 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 158693-37:
(8*1)+(7*5)+(6*8)+(5*6)+(4*9)+(3*3)+(2*3)+(1*7)=179
179 % 10 = 9
So 158693-37-9 is a valid CAS Registry Number.
158693-37-9Relevant academic research and scientific papers
Total synthesis of (±)-clavizepine
Ishibashi, Hiroyuki,Takagaki, Kazutaka,Imada, Noriko,Ikeda, Masazumi
, p. 10215 - 10224 (2007/10/02)
The first total synthesis of benzopyranobenzazepine alkaloid (±)- clavizepine (1) has been achieved by using the Bradsher cyclization of the keto ester 16 (leading to 18) and the Pummerer-type cyclization of the sulfoxide 25 (leading to 26) as the key ste
