天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片
ChemicalBook
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Bicyclo[3.1.0]hexan-2-one, 3-methylene-5-(1-methylethyl)-, (-)- (9CI)
????[3.1.0]??-2-?,3-???-5-(1-????)-,(-)-(9CI)
34181-27-6
Bicyclo[4.1.0]hept-2-ene-7-carbonyl chloride (9CI)
????[4.1.0]??-2-?-7-?????????(9Cl)
78293-66-0
Bicyclo[3.1.0]hexane-2,6-dicarboxylic acid, 2-amino-4-methylene-,
????[3.1.0]??-2,6-??????,2-???-4-???-,
215867-32-6
Bicyclo[3.1.0]hexane, 2,4-diethoxy-, (1-alpha-,2-alpha-,4-alpha-,5-alpha-)- (9CI)
Bicyclo[3.1.0]hexane, 2,4-diethoxy-, (1-alpha-,2-alpha-,4-alpha-,5-alpha-)- (9CI)
151851-03-5
Bicyclo[3.1.0]hexane-1-carboxaldehyde, 3-hydroxy-3-methyl-, (1S,3S,5S)- (9CI)
Bicyclo[3.1.0]hexane-1-carboxaldehyde, 3-hydroxy-3-methyl-, (1S,3S,5S)- (9CI)
326599-87-5
Bicyclo[1.1.0]butane-1-carboxylic acid, 3-(hydroxymethyl)-, methyl ester (9CI)
??????[1.1.0]??-1-????,3-(???????)-,??????(9CI)
175881-32-0
Bicyclo[3.3.1]non-2-en-9-amine, 2-(4-methylphenyl)- (9CI)
Bicyclo[3.3.1]non-2-en-9-amine, 2-(4-methylphenyl)- (9CI)
782419-20-9
Bicyclo[2.2.1]heptane-2-carboxamide, 3-amino-, (1R,2S,3R,4S)- (9CI)
Bicyclo[2.2.1]heptane-2-carboxamide, 3-amino-, (1R,2S,3R,4S)- (9CI)
364078-15-9
Bicyclo[3.2.1]octane-3-methanamine, 3-amino-, endo- (9CI)
????[3.2.1]??-3-????,3-???-,??-(9CI)
769894-15-7
Bicyclo[2.2.1]heptane, 2-bromo-, (1R,2S,4S)-rel- (9CI)
??????[2.2.1]??,2-???-,(1R,2S,4S)-rel-(9CI)
13237-87-1
Bicyclo[4.1.0]heptan-3-one, 2-[(dimethylamino)methyl]-4,7,7-trimethyl-, [1S-(1alpha,4ba,6alpha)]- (9CI)
Bicyclo[4.1.0]heptan-3-one, 2-[(dimethylamino)methyl]-4,7,7-trimethyl-, [1S-(1alpha,4ba,6alpha)]- (9CI)
792129-07-8
Bicyclo[2.2.1]hept-5-ene-2-carboxamide, 2-methyl- (9CI)
Bicyclo[2.2.1]hept-5-ene-2-carboxamide, 2-methyl- (9CI)
90642-77-6
Bicyclo[2.2.1]hept-2-en-7-one, 5-ethynyl-, endo- (9CI)
????[2.2.1]??-2-?-7-?,5-???-,??-(9Cl)
146680-92-4
Bicyclo[3.1.0]hex-2-ene-6-carbonyl chloride, 3-methyl-, (1alpha,5alpha,6beta)- (9CI)
????[3.1.0]??-2-?-6-?????????,3-??-,(1??,5??,6??)-(9CI)
98973-73-0
Bicyclo[2.2.1]heptan-2-amine, 1,3,3-trimethyl-, (1R,4R)- (9CI)
????[2.2.1]??-2-??,1,3,3-????-,(1R,4R)-(9Cl)
770696-39-4
Bicyclo[3.2.0]hept-2-en-6-ol, 7-amino-, (1R,5S,6S,7R)- (9CI)
Bicyclo[3.2.0]hept-2-en-6-ol, 7-amino-, (1R,5S,6S,7R)- (9CI)
406500-14-9
Bicyclo[2.2.1]hept-2-ene-7-carboxylic acid, 7-(2-propenyl)-, methyl ester, (7-anti)- (9CI)
????[2.2.1]??-2-?-7-?????,7-(2-????)-,??????,(7-??)-(9Cl)
790260-42-3
Bicyclo[2.2.2]octane-2-methanol, 1-ethoxy-5-hydroxy-3-methyl-, (1alpha,2alpha,3ba,4ba,5alpha)- (9CI)
Bicyclo[2.2.2]octane-2-methanol, 1-ethoxy-5-hydroxy-3-methyl-, (1alpha,2alpha,3ba,4ba,5alpha)- (9CI)
173672-42-9
Bicyclo[2.2.1]heptan-2-one, 3-acetyl-1,7,7-trimethyl-, (1R,3R,4R)- (9CI)
Bicyclo[2.2.1]heptan-2-one, 3-acetyl-1,7,7-trimethyl-, (1R,3R,4R)- (9CI)
661459-82-1
Bicyclo[4.2.0]octa-1,3,5-triene-7-carboxylic acid, 7-ethyl-, ethyl ester (9CI)
????[4.2.0]??-1,3,5-???-7-?????,7-??-,??????(9CI)
654646-84-1
Bicyclo[2.2.2]octan-2-ol, 3-(methylamino)-, cis- (9CI)
??????[2.2.2]??-2-?,3-(?????)-,??-(9CI)
754917-15-2
Bicyclo[2.2.1]heptan-2-amine, N,N-dichloro-, exo- (9CI)
????[2.2.1]??-2-??,N,N-????-,??-(9CI)
78685-88-8
Bicyclo[2.2.1]heptan-2-ol, 1-[(ethylamino)methyl]-7,7-dimethyl-, (1R,2R,4R)- (9CI)
Bicyclo[2.2.1]heptan-2-ol, 1-[(ethylamino)methyl]-7,7-dimethyl-, (1R,2R,4R)- (9CI)
363158-65-0
Bicyclo[3.2.1]octane-6-carboxamide, 8-hydroxy-1,6-dimethyl-, (1R,5S,6S,8R)-rel- (9CI)
Bicyclo[3.2.1]octane-6-carboxamide, 8-hydroxy-1,6-dimethyl-, (1R,5S,6S,8R)-rel- (9CI)
726188-33-6
Bicyclo[2.2.1]heptane-2-carbonyl chloride, 3,3-dimethyl-, (1R-exo)- (9CI)
????[2.2.1]??-2-?????????,3,3-???-,(1R-??)-(9CI)
67596-91-2
Bicyclo[3.1.0]hexane-3-carboxaldehyde, 6,6-difluoro- (9CI)
????[3.1.0]??-3-????????,6,6-?????-(9CI)
494210-62-7
1,1′-Bicyclohexyl, 4-propyl-4′-(trifluormethyl)-, (trans,trans)-
1,1'-????????,4-???-4'-(????????)-,(???,???)-
133261-31-1
BICYCLO-OCT-A-EN-7-CARBOXYLATE
BICYCLO-OCT-A-EN-7-CARBOXYLATE
Bicyclo[2.2.2]oct-5-ene-2,3-dione, 5-methyl-8-propoxy-, (1R,4R,8R)-rel- (9CI)
Bicyclo[2.2.2]oct-5-ene-2,3-dione, 5-methyl-8-propoxy-, (1R,4R,8R)-rel- (9CI)
220304-83-6
Bicyclo[3.1.1]heptane-1-carbonyl chloride (9CI)
????[3.1.1]??-1-?????????(9CI)
123033-33-0
Bicyclo[3.2.0]heptane-2,7-diol, 4,4-dimethyl-, (1R,2R,5R,7S)-rel- (9CI)
Bicyclo[3.2.0]heptane-2,7-diol, 4,4-dimethyl-, (1R,2R,5R,7S)-rel- (9CI)
655232-36-3
Bicyclo[2.2.1]heptan-2-ol, 1,3,3-trimethyl-2-(1E)-1-propenyl-, (1R,2R,4S)- (9CI)
Bicyclo[2.2.1]heptan-2-ol, 1,3,3-trimethyl-2-(1E)-1-propenyl-, (1R,2R,4S)- (9CI)
791620-58-1
Bicyclo[2.2.1]heptane-7-carboxamide, 2-oxo-, syn- (9CI)
????[2.2.1]??-7-???????,2-??-,?-(9CI)
88953-66-6
Bicyclo[8.1.0]undecane-11-carbonyl chloride (9CI)
????[8.1.0]???-11-?????????(9CI)
78293-83-1
Bicyclo[1.1.1]pentane-1-carbonyl chloride, 3-fluoro- (9CI)
????[1.1.1]??-1-?????????,3-????-(9CI)
146038-54-2
Bicyclo[2.2.1]heptane-7-carbonyl fluoride, 2,2-difluoro-1,7-dimethyl-, (1R,4R,7R)- (9CI)
????[2.2.1]??-7-??????????,2,2-?????-1,7-???-,(1R,4R,7R)-(9CI)
289722-47-0
Bicyclo[3.1.0]hexan-3-one, 1-acetyl-4-methyl-, [1R-(1alpha,4alpha,5alpha)]- (9CI)
Bicyclo[3.1.0]hexan-3-one, 1-acetyl-4-methyl-, [1R-(1alpha,4alpha,5alpha)]- (9CI)
130912-77-5
Bicyclo[2.2.1]heptane-2-acetyl chloride, alpha-hydroxy-3,3-dimethyl- (9CI)
??????[2.2.1]??-2-????????,??-?????-3,3-???-(9CI)
78925-02-7
Bicyclo[4.1.0]heptane-7-carboxamide, 3-methyl- (9CI)
????[4.1.0]??-7-??????,3-??-(9CI)
681453-02-1
Bicyclo[3.1.0]hex-2-ene, 4,6-dichloro-, (1alpha,4alpha,5alpha,6alpha)- (9CI)
Bicyclo[3.1.0]hex-2-ene, 4,6-dichloro-, (1alpha,4alpha,5alpha,6alpha)- (9CI)
68241-70-3
Bicyclo[3.1.0]hex-2-ene-2-carboxaldehyde, 5-(1-methylethyl)-, (1S)- (9CI)
Bicyclo[3.1.0]hex-2-ene-2-carboxaldehyde, 5-(1-methylethyl)-, (1S)- (9CI)
54825-98-8
Bicyclo[3.1.0]hexane-2,6-dicarboxylic acid, 2-amino-, (1R,2R,5S,6R)- (9CI)
????[3.1.0]??-2,6-??????,2-???-,(1R,2R,5S,6R)-(9CI)
176199-49-8
Bicyclo[4.2.0]octa-1,3,5-trien-7-one, 4-(1-methylethyl)- (9CI)
Bicyclo[4.2.0]octa-1,3,5-trien-7-one, 4-(1-methylethyl)- (9CI)
140210-31-7
Bicyclo[3.1.0]hexane-2,6-dicarboxylic acid, 2-amino-3-methyl-,
????[3.1.0]??-2,6-??????,2-???-3-??-,
191342-39-9
Bicyclo[2.2.1]heptan-2-ol, 5-amino- (9CI)
????[2.2.1]??-2-?,5-???-(9Cl)
223595-57-1
Bicyclo[2.2.1]heptane-2-carbonitrile, 3,6-dimethyl- (9CI)
????[2.2.1]??-2-??????,3,6-???-(9CI)
302780-17-2
Bicyclo[2.2.1]hept-5-ene-2-methanamine, N-ethyl-, (1R,2R,4R)-rel- (9CI)
Bicyclo[2.2.1]hept-5-ene-2-methanamine, N-ethyl-, (1R,2R,4R)-rel- (9CI)
259181-93-6
Bicyclo[2.2.1]hept-5-en-2-one, 7-(1-methylethylidene)-, oxime (9CI)
??????[2.2.1]??-5-?-2-?,7-(1-??????)-,??(9CI)
118999-99-8
Bicyclo[4.1.0]heptane-7-carboxamide (9CI)
????[4.1.0]??-7-??????(9CI)
90154-89-5
Bicyclo[1.1.1]pentane-1-carboxylic acid, 3-amino- (9CI)
????[1.1.1]??-1-?????,3-???-(9CI)
406947-32-8
Bicyclo[2.2.2]octan-1-amine, 4-(p-ethylphenyl)- (8CI)
????[2.2.2]??-1-??,4-(p-????)-(8Cl)
801157-79-9
Bicyclo[2.2.1]heptan-2-ol, carbamate, exo- (9CI)
??????[2.2.1]??-2-?,?????,??-(9CI)
42050-68-0
Bicyclo[2.2.1]heptan-2-amine, N-cyclopentyl-1,7,7-trimethyl- (9CI)
????[2.2.1]??-2-??,N-?????-1,7,7-????-(9CI)
791015-48-0
Bicyclo[2.2.1]heptane-1-carboxamide, 3,3-dimethyl-2-methylene-N-(5-methyl-
Bicyclo[2.2.1]heptane-1-carboxamide, 3,3-dimethyl-2-methylene-N-(5-methyl-
618404-07-2
Bicyclo[4.1.0]heptan-2-ol, 2-butyl-6-ethoxy-, (1R,2R,6S)-rel- (9CI)
Bicyclo[4.1.0]heptan-2-ol, 2-butyl-6-ethoxy-, (1R,2R,6S)-rel- (9CI)
350243-64-0
Bicyclo[3.1.0]hexan-3-ol, 4-methylene-1-(1-methylethyl)-, [1S-(1alpha,3alpha,5alpha)]- (9CI)
Bicyclo[3.1.0]hexan-3-ol, 4-methylene-1-(1-methylethyl)-, [1S-(1alpha,3alpha,5alpha)]- (9CI)
139757-63-4
Bicyclo[2.2.1]heptane-2,7-dicarboxylic acid, 7-amino-, (1S,2S,4R,7S)- (9CI)
????[2.2.1]??-2,7-??????,7-???-,(1S,2S,4R,7S)-(9CI)
208838-02-2
Bicyclo[2.2.1]hept-5-ene-2-carbonyl chloride, (1R,2S,4R)-rel- (9CI)
Bicyclo[2.2.1]hept-5-ene-2-carbonyl chloride, (1R,2S,4R)-rel- (9CI)
34733-86-3
Bicyclo[3.3.1]nonane-1-carbonyl chloride, 5-methyl-3-oxo- (7CI)
????[3.3.1]??-1-?????????,5-??-3-??-(7CI)
91244-99-4
Bicyclo[3.2.0]hepta-3,6-dien-2-one, 7-ethoxy- (9CI)
Bicyclo[3.2.0]hepta-3,6-dien-2-one, 7-ethoxy- (9CI)
307558-37-8
Bicyclo[2.2.1]heptan-7-amine, 1-methyl-, (S)- (9CI)
????[2.2.1]??-7-??,1-??-,(S)-(9CI)
98586-53-9
Bicyclo[2.2.1]hept-2-ene, 2-bromo-5,6-bis(methylene)- (9CI)
Bicyclo[2.2.1]hept-2-ene, 2-bromo-5,6-bis(methylene)- (9CI)
524741-57-9
Bicyclo[2.2.1]hept-5-ene-2-carboxaldehyde, 3-(1-methylethyl)-, (1S,2R,3R,4R)- (9CI)
Bicyclo[2.2.1]hept-5-ene-2-carboxaldehyde, 3-(1-methylethyl)-, (1S,2R,3R,4R)- (9CI)
271578-36-0
Bicyclo[2.2.1]heptane, 2-(nitromethylene)-, (2Z)- (9CI)
????[2.2.1]??,2-(??????)-,(2Z)-(9CI)
600732-52-3
Bicyclo[2.2.1]heptane-2-methanamine, 3,3-dimethyl-, endo- (9CI)
??????[2.2.1]??-2-????,3,3-???-,??-(9CI)
758626-78-7
Bicyclo[2.2.1]heptan-7-ol, 2-amino- (9CI)
????[2.2.1]??-7-?,2-???-(9Cl)
174600-69-2
Bicyclo[3.2.1]octane-6-carboxylic acid, 1,6-dimethyl-, methyl ester, (1R,5S,6R)-rel- (9CI)
????[3.2.1]??-6-?????,1,6-???-,??????,(1R,5S,6R)-rel-(9CI)
819080-11-0
Bicyclo[2.2.1]hept-5-en-2-ol, 3-amino-, (1R,2R,3S,4S)- (9CI)
Bicyclo[2.2.1]hept-5-en-2-ol, 3-amino-, (1R,2R,3S,4S)- (9CI)
339301-91-6
Bicyclo[3.2.0]heptane-2-carboxylic acid, 7-oxo-, [1S-(1alpha,2alpha,5alpha)]- (9CI)
????[3.2.0]??-2-?????,7-??-,[1S-(1??,2??,5??)]-(9CI)
177569-99-2
Bicyclo[4.1.0]hepta-1,3,5-triene, 7,7-dichloro- (9CI)
????[4.1.0]??-1,3,5-???,7,7-????-(9CI)
102073-00-7
Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid, 3-methyl-, (1S,2S,3R,4R)- (9CI)
Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid, 3-methyl-, (1S,2S,3R,4R)- (9CI)
127179-45-7
Bicyclo[3.1.0]hexane-2,6-dicarboxylic acid, 2-amino- (9CI)
????[3.1.0]??-2,6-??????,2-???-(9CI)
177317-28-1
Bicyclo[2.2.1]heptane-2-carbonyl chloride, 6-oxo-, endo- (9CI)
??????[2.2.1]??-2-????????,6-??-,??-(9CI)
66787-45-9
Bicyclo[4.2.0]octa-1,3,5-triene-7-carboxylic acid, 5-amino-, ethyl ester (9CI)
????[4.2.0]??-1,3,5-???-7-?????,5-???-,??????(9CI)
367263-90-9
Bicyclo[2.2.2]octanone, 5-ethynyl-, (1R,4R,5S)-rel- (9CI)
????[2.2.2]???,5-???-,(1R,4R,5S)-rel-(9Cl)
697751-11-4
Bicyclo[3.1.0]hexan-3-one, 2-(1-hydroxyethylidene)-6,6-dimethyl-, (1S,2Z,5R)-
Bicyclo[3.1.0]hexan-3-one, 2-(1-hydroxyethylidene)-6,6-dimethyl-, (1S,2Z,5R)-
340165-10-8
Bicyclo[2.2.1]hept-5-ene-2-hexanol (9CI)
??????[2.2.1]??-5-?-2-???(9CI)
786726-73-6
Bicyclo[2.2.0]hexane, 1-bromo- (9CI)
????[2.2.0]??,1-???-(9Cl)
113555-32-1
Bicyclo[3.1.0]hexane-6-carboxylic acid, hydrazide, exo- (8CI)
????[3.1.0]??-6-?????,?????,??-(8CI)
32790-55-9
Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid, 3-[[(phenylmethoxy)carbonyl]amino]-, (1R,2S,3R,4S)-rel- (9CI)
Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid, 3-[[(phenylmethoxy)carbonyl]amino]-, (1R,2S,3R,4S)-rel- (9CI)
336185-22-9
Bicyclo[3.1.0]hex-2-ene,4-
??????[3.1.0]??-2-?,4-
28634-89-1
Bicyclo[2.2.1]heptane-2,5-d
??????[2.2.1]??-2,5-d
4230-32-4
Bicyclo[2.2.1]heptane-7-carbonyl fluoride, 1,7-dimethyl-2-oxo-, (1R,4R,7R)- (9CI)
????[2.2.1]??-7-??????????,1,7-???-2-??-,(1R,4R,7R)-(9CI)
289722-46-9
Bicyclo[3.3.1]nonane-2,6-diol, 3,3,7,7-tetramethyl-, (1R,2R,5R,6R)- (9CI)
Bicyclo[3.3.1]nonane-2,6-diol, 3,3,7,7-tetramethyl-, (1R,2R,5R,6R)- (9CI)
639858-20-1
Bicyclo[2.2.1]hept-5-ene-2-carboxaldehyde, 2,3-dimethyl-, (1R,2R,3S,4S)- (9CI)
Bicyclo[2.2.1]hept-5-ene-2-carboxaldehyde, 2,3-dimethyl-, (1R,2R,3S,4S)- (9CI)
509149-31-9
Bicyclo[2.2.1]hept-5-ene-2-carboxamide, N-methyl-, endo- (9CI)
??????[2.2.1]??-5-?-2-?????,N-??-,??-(9CI)
13295-40-4
Bicyclo[2.1.1]hexane-5,6-dicarbonyl dichloride, stereoisomer (9CI)
Bicyclo[2.1.1]hexane-5,6-dicarbonyl dichloride, stereoisomer (9CI)
74985-46-9
Bicyclo[2.2.1]heptan-2-one, 5-acetyl-, exo- (9CI)
????[2.2.1]??-2-?,5-???-,??-(9CI)
143392-17-0
Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid, 4-methyl-, endo- (9CI)
????[2.2.1]??-5-?-2-?????,4-??-,??-(9CI)
123639-98-5
Bicyclo[3.1.0]hexane-1-carboxylic acid, 5-cyano- (8CI,9CI)
??????[3.1.0]??-1-????,5-???-(8CI,9CI)
25090-49-7
Bicyclo[3.1.0]hexane, 3-(bromomethyl)-, cis- (8CI)
????[3.1.0]??,3-(?????)-,cis-(8CI)
16782-62-0
Bicyclo[2.2.1]hept-5-ene-2-carboxaldehyde, 3-ethyl-, (1R,2R,3R,4S)-rel- (9CI)
Bicyclo[2.2.1]hept-5-ene-2-carboxaldehyde, 3-ethyl-, (1R,2R,3R,4S)-rel- (9CI)
136559-32-5
Bicyclo[3.1.1]heptane-1-carboxamide (9CI)
Bicyclo[3.1.1]heptane-1-carboxamide (9CI)
126332-31-8
Bicyclo[2.2.1]hept-5-en-2-ol, 1,7,7-trimethyl-2-(1-methylethyl)-, (1S,2R,4R)- (9CI)
Bicyclo[2.2.1]hept-5-en-2-ol, 1,7,7-trimethyl-2-(1-methylethyl)-, (1S,2R,4R)- (9CI)
791104-79-5
Bicyclo[2.2.1]heptan-1-amine, 7,7-dimethyl-2-methylene-, (1S,4S)- (9CI)
Bicyclo[2.2.1]heptan-1-amine, 7,7-dimethyl-2-methylene-, (1S,4S)- (9CI)
178448-80-1
Bicyclo[2.2.1]hept-2-en-2-ol, 7,7-dimethoxy-, (1S)- (9CI)
????[2.2.1]??-2-?-2-?,7,7-????-,(1S)-(9CI)
764598-16-5
Bicyclo[3.1.0]hexane-6-carbonitrile, 6-(acetyloxy)-, (1-alpha-,5-alpha-,6-ba-)- (9CI)
Bicyclo[3.1.0]hexane-6-carbonitrile, 6-(acetyloxy)-, (1-alpha-,5-alpha-,6-ba-)- (9CI)
123033-16-9
Bicyclo[3.1.0]hexane-1-carboxaldehyde, 6,6-dimethyl-, O-acetyloxime (9CI)
????[3.1.0]??-1-????????,6,6-???-,O-?????(9CI)
152252-68-1
Bicyclo[2.2.1]heptane, 5-methoxy-2,3-bis(methylene)-, (1S-exo)- (9CI)
??????[2.2.1]??,5-???-2,3-??(???)-,(1S-??)-(9CI)
174172-48-6
Bicyclo[2.2.1]heptan-2-ol, 7-amino-, (1R,2R,4R,7S)- (9CI)
Bicyclo[2.2.1]heptan-2-ol, 7-amino-, (1R,2R,4R,7S)- (9CI)
774576-95-3
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
Copyright 2019 ? ChemicalBook. All rights reserved