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21676-05-1

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21676-05-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21676-05-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,7 and 6 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21676-05:
(7*2)+(6*1)+(5*6)+(4*7)+(3*6)+(2*0)+(1*5)=101
101 % 10 = 1
So 21676-05-1 is a valid CAS Registry Number.

21676-05-1Relevant articles and documents

Syntheses of all-(Z)-5,8,11,14,17-eicosapentaenoic acid and all-(Z)-4,7,10,13,16,19-docosahexaenoic acid from (Z)-1,1,6,6-tetraisopropoxy-2-hexene

Sandri,Viala

, p. 6627 - 6630 (1995)

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Stereoselective synthesis of unsaturated C-18 hydroxy fatty acids. The self defensive substances

Rama Rao,Reddy,Purandare,Varaprasad Ch.

, p. 4385 - 4394 (2007/10/02)

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Identification and Synthesis of New γ-Lactones from Tuberose Absolute (Polianthes tuberosa)

Maurer, Bruno,Hauser, Arnold

, p. 462 - 476 (2007/10/02)

Six unsaturated γ-lactones, (Z)-5-octen-4-olide (1), (Z)-5-decen-4-olide (2), (Z)-6-nonen-4-olide (3), (Z)-6-dodecen-4-olide (4), (Z,Z)-6,9-dodecadien-4-olide (5), and tuberolide (6) have been identified for the first time in tuberose absolute (from Polianthes tuberosa L.).All structures were corroborated by synthesis and all, except 3 and 4, are new.An improved method for the stereoselective synthesis of (+/-)-cis-bicyclo-non-3-en-7-one (23) by an AlCl3-catalyzed Diels-Alder reaction is reported.

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