56772-31-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56772-31-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,7,7 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 56772-31:
(7*5)+(6*6)+(5*7)+(4*7)+(3*2)+(2*3)+(1*1)=147
147 % 10 = 7
So 56772-31-7 is a valid CAS Registry Number.
56772-31-7Relevant articles and documents
Further synthetic attempts towards calicene
Al-Dulayymi, Ahmad,Li, Xiaoming,Neuenschwander, Markus
, p. 1633 - 1644 (2007/10/03)
First synthetic attempts towards the so-far-unknown calicene (= 5- (cycloprop-2-en-1-ylidene)cyclopenta-1,3-diene) precursors 3-(cyclopenta-2,4- dien-1-ylidene)tricyclo[3.2.2.22.4]nona-6,8-diene (4; Scheme 1), 1,4- di(cyclopenta-2,4-dien-1-ylid