172226-17-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172226-17-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,2,2 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 172226-17:
(8*1)+(7*7)+(6*2)+(5*2)+(4*2)+(3*6)+(2*1)+(1*7)=114
114 % 10 = 4
So 172226-17-4 is a valid CAS Registry Number.
172226-17-4Relevant articles and documents
Stereocontrolled total synthesis of (+)-paraherquamide B
Cushing, Timothy D.,Sanz-Cervera, Juan F.,Williams, Robert M.
, p. 557 - 579 (2007/10/03)
The convergent stereocontrolled, asymmetric total synthesis of (+)-paraherquamide B is described. Key features of this synthesis include (1) an improved procedure to effect reduction of unprotected oxindoles to indoles; (2) a complex application of the So
